-fy J>\Soo,o£>e> - oo SECOND AMENDMENT CONTRACT
Contents
1. 3 500 000 00 uman O1 404 2 s4 H b6F SECOND AMENDMENT CONTRACT 2012 P00048 7 RN eee ee RENEWABLE POWER PURCHASE AND OPERATING AGREEMENT BETWEEN RENEWABLE ENERGY AUTHORITY LLC AND THE PUERTO RICO ELECTRIC POWER AUTHORITY APPEAR AS FIRST PARTY Puerto Rico Electric Power Authority hereinafter referred to as PREPA a public corporation and government instrumentality of the Commonwealth of Puerto Rico created by Act 83 of May 2 1941 as amended represented in this act by its Executive Director engineer Juan Francisco Alicea Flores of legal age married and resident of Caguas Puerto Rico AS SECOND PARTY Renewable Energy Authority LLC hereinafter referred to as SELLER a corporation organized and existing under the laws of Delaware authorized to do business in Puerto Rico represented in this act by its President Rub n Gonzalez Cruz of legal age and resident of Bayamon by virtue of Corporate Resolution dated as of May 19 2014 WITNESSETH In consideration of the mutual covenants hereinafter stated the Parties agree themselves their personal representatives and successors as follows STATE WHEREAS SELLER and PREPA executed on November 21 2011 a Renewable Power Purchase and Operating Agreement Agreement as amended by Amendment No 1 dated as of May 17 2012 Amendment No 1 collectively hereinafter referred to as the Agreement for the development of a 20 MW photovoltaic solar energy system2. g the circumstances provided in Section 16 2 Notwithstanding the foregoing the terms under subsections e and f of this paragraph shall be extended if such delay is caused by a Force Majeure event Pending Permits Legal Challenge or an act or omission by PREPA 8 Substitution of Appendix B INTERCONNECTION is hereby substituted and replaced in its entirety by APPENDIX B INTERCONNECTION attached hereto 9 Substitution of Appendix C Example of Price Index Calculation is hereby substituted and replaced in its entirety by APPENDIX C AMENDED ENERGY AND GREEN CREDIT PURCHASE PRICE attached hereto Second Amendment Contract 2012 P00045 Renewable Energy Authority LLC Page 10 10 Substitution of APPENDIX D TECHNICAL SPECIFICATION FOR DYNAMIC 11 12 13 14 SYSTEM MONITOR is hereby substituted and replaced in its entirety by APPENDIX D TECHNICAL SPECIFICATION FOR DYNAMIC SYSTEM MONITOR attached hereto Substitution of APPENDIX E PRELIMINARY MINIMUM TECHNICAL REQUIREMENTS FOR INTERCONNECTION OF PHOTOVOLTAIC PV FACILITIES is hereby substituted and replaced in its entirety by APPENDIX E MINIMUM TECHNICAL REQUIREMENTS FOR INTERCONNECTION OF PHOTOVOLTAIC PV FACILITIES attached hereto A new APPENDIX F DETERMINATION OF NET ELECTRICAL OUTPUT NOT RECEIVED attached hereto is included The above mentioned amendments apply to all terms and conditions of the Agreement as applicable Represen
3. regulation order writ judgment injunction decree determination or award presently in effect and ii this Amendment is a legal valid and binding obligation of SELLER enforceable against SELLER in accordance with its terms except as may be limited by applicable bankruptcy insolvency or similar laws affecting the enforcement of rights generally Ratification Except as expressly amended hereby the Agreement and all documents instruments and agreements related thereto are hereby ratified and confirmed in all respects No Implied Waiver This Amendment shall be limited precisely as written and shall not be deemed to be a consent granted pursuant to or a waiver or modification of any other term or condition of the Agreement whether or not known to the Parties or to prejudice any other right or rights which the Agreement may now have or have in the future Counterparts This Amendment may be executed in multiple original or facsimile counterparts each of which shall be deemed an original and shall be binding upon the Party who executed the same but all of such counterparts shall constitute the same Amendment Governing Law This Amendment shall be governed by construed and enforced in accordance with the laws of the Commonwealth of Puerto Rico and to the extent applicable the laws of the United States of America The Parties herein agree that all Disputes arising hereunder shall be resolved pursuant to Section 21 12 of the Agreem
4. 453 62 8501 APPENDIX B INTERCONNECTION Seller shall provide the following information to PREPA within ninety 90 days following the Effective Date Data submitted in a preliminary or estimated form shall be updated within thirty 30 days after final equipment arrangements and specifications are established 1 Electrical one line diagram of the Facility 2 Explanation of proposed equipment protection and control scheme may be shown functionally on the one line diagram 3 Site plan showing plant layout property lines access roads and switchyard boundaries 4 Preliminary equipment layout and arrangement for switchyard and PV Facility step up transformers GSU 5 Reactive Power Capacity curve of PV Facility 6 Station auxiliary load 7 Station auxiliary transformer data impedance connection winding load loss and no load tap changer 8 PV Facility step up transformer impedance load loss no load taps changer connection and winding 9 PV Facility Short Circuit Ratio 10 PV Facility kilowatt rating 11 PV Facility kilovar rating 12 Equivalent PV Facility modeling for Short Circuit Studies 13 Sellers requirements for power supplied by PREPA during construction and start up 14 Project schedule l J or bar chart format including but not limited to the following milestones QF status obtained Engineering 30 complete One line diagram approved Financial Closing Date Appendix B Interconne
5. 8 c Either Party shall have the right from time to time upon fourteen 14 Days written notice to the other Party and during regular business hours to examine the records and data of the other Party relating to the proper administration of this Agreement any time during the period the records are required to be maintained 8 9 At PREPA s request SELLER shall provide certifications of tests and inspections of the electric and protection equipment which may impact PREPA s electrical system PREPA shall have the right to visit and visually monitor the Facility during operation and testing including any acceptance testing of the Facility 6 Article 11 Compensation Payment and Billing Section 11 2 in the PPOA is hereby amended by deleting that Section in its entirety and replacing it with the following 11 2 a 11 2 b Energy Payment Beginning with the Pre Operation Period and continuing throughout the Term of this Agreement EP EPP x NEO Where EP is the Energy Payment EPP is the Energy Purchase Price which for the first Agreement Year shall be equal to 0 1450 kWh of NEO NEO is the Net Electrical Output expressed in kilowatt hours Commencing on the first anniversary of the Commercial Operations Date commencement of Agreement Year 2 and each year thereafter up to and including the Agreement Year 20 the Energy Purchase Price shall be escalated in an amount equal to two percent 2 0 annually For Agreem
6. P R Vega Serena Solar Plant Renewable Authority Corp Solar Project Facilities New 38 kV Transmission Line 20 MW Acquisition of new right of way maintenance and construction of new transmission line are responsibility of Vega Serena Solar Plant Renewable Authority Corp This new f V 38 kVcircuit shall be built completely af out of PREPA S actual right of way Vega Baja TC f 38 kV Switchyard New 38 kV Underground Line l Required for interconnection to new 38 kV transmission line This new 38 kV underground circuit is L 2200 L 2200 responsibility of Vega Serena Solar Vega Alta Sect Manat TC Plant Renewable AuthorityCorp l Sub 9001 Vega Baja TC gii pes Vega Baja 1 115 38 kV Interconnection AAAI E acilities ryryr J mi ae ee ied sar ee PREPA SSS Interconnection ae ee ee Facilities New 38 kV Switchyard Expansion Modifications and Land Acquisition Switchyard expansion modifications and land acquisition costs required for interconnection are responsibility of Vega Serena Solar Plant Renewable Authority Corp Major modifications required for the switchyard expansion including relocation l of transmission and distribution lines switchyard components control room expansion etc shall be established by PREPA based on actual physical field evaluations of the project interconnection site Vega Baja TC L 2200 115 kV Vega Baja Industrial Park L 16800 Vega Baja GT
7. Vega Alta Sect COMPANY Vega Serena Solar Plant PREPA Renewable Authority Corp Puerto Rico Electric Power Authority Electrical Interconnection Vega Baja TC ar APPENDIX C AMENDED ENERGY AND GREEN CREDIT PURCHASE PRICE Renewable Energy Authority LLC Energy Purchase Green Credit Ag bale Price Purchase Price kWh kWh 1 0 1450 0 0225 2 0 1479 0 0225 3 0 1509 0 0225 4 0 1539 0 0225 5 0 1570 0 0225 6 0 1601 0 0225 7 0 1633 0 0225 8 0 1666 0 0225 9 0 1699 0 0225 10 0 1733 0 0225 19 0 2071 0 0225 20 0 2112 0 0225 21 0 1450 0 0225 22 0 1450 0 0225 23 0 1450 0 0225 24 0 1450 0 0225 25 0 1450 0 0225 The Energy Purchase Price for Agreement Years 2 to 20 shall be escalated in an amount equal to two percent 2 0 For Agreement Years 21 to 25 the Energy Purchase Price shall be 0 1450 kWh not subject to escalation The Green Credit Purchase Price for Agreement Years 1 to 25 shall be 0 0225 kWh not subject to escalation APPENDIX D TECHNICAL SPECIFICATION FOR DYNAMIC SYSTEM MONITOR DSM 1 Introduction The following specification defines the minimum requirements for an instrument used in the monitoring and register of dynamic disturbances on electric power systems and the supervision of generator performance according to Grid Codes 2 Hardware 2 1 Inputs 2 1 1 The equipment shall have at least 32 analog inp
8. and offer installation support Page 5 of 5 APPENDIX E MINIMUM TECHNICAL REQUIREMENTS FOR INTERCONNECTION OF PHOTOVOLTAIC PV FACILITIES The proponent shall comply with the following minimum technical requirements 1 VOLTAGE RIDE THROUGH t Voltage Norninal o j a i 150ms 600 ms Time s LVRT OVRT Figure 1 Voltage Ride Through Requirements a PREPA s Low Voltage Ride Through LVRT Requirements i From Figure 1 PREPA requires all generation to remain online and be able to ride through three phase and single phase faults down to 0 0 per unit measured at the point of interconnection for up to 600 ms ii All generation remains online and operating during and after normally cleared faults on the point of interconnection iii All generation remains online and operating during backup cleared faults on the point of interconnection iv During the low voltage fault conditions the PV facility shall operate on reactive current injection mode This mode of operation shall be implemented with a reactive current droop characteristic which shall have an adjustable slope from 1 to 5 A dead band of 15 is required b PREPA s Overvoltage Ride Through OVRT Requirements i PREPA requires all generation to remain online and able to ride through sym
9. be of industrial grade to insure long life in a typical substation or generation plant environment Memory and storage capacity The equipment shall have a non volatile solid state memory ex SSD flash etc with the required capacity to stores at least one 1 year of continuous data based in typical recording periods and typical recording rates Also the memory shall have a minimum storage capacity of 1 000 RMS Trigger events and 1 000 Instantaneous trigger events based in typical recording rates and recording periods Typical recording periods and recording rates are a RMS Trigger Recording Function Recording rate of 1sample per cycle on all the signals i Pre Trigger 60 seconds ii Post trigger 300 seconds b Instantaneous Values Trigger Recording Function recording rate of 250 samples per cycle on all instantaneous signals i Pre Trigger 1 second ii Post Trigger 2 seconds c Continuous Recording Function The recording rate is 1 sample per second on all the signals This recording function is continuous but saved in 24 hours period All the recording functions mentioned above shall work simultaneously The equipment shall maintain the date and time in an internal battery backed clock Communication The equipment shall have at least two Ethernet 10 100 1000 Mbps port LAN interface TCP IP Protocol for local and remote network communication Power Source The equipment shall have a redundant power supply Two
10. response shall not decrease at a ramp rate higher than 10 of the maximum AC active power capacity per minute The operational range of the frequency response and regulation system shall be from 10 to 100 of the maximum AC active power capacity established in the contract The PV facility power output at the POI shall never exceed the maximum AC active power established in the contract Puerto Rico Electric Power Authority Minimum Technical Requirements for Photovoltaic Generation PV Projects 5 7 RAMP RATE CONTROL Ramp Rate Control is required to smoothly transition from one output level to another The PV facility shall be able to control the rate of change of power output during some circumstances including but not limited to 1 rate of increase of power 2 rate of decrease of power 3 rate of increase of power when a curtailment of power output is released 4 rate of decrease in power when curtailment limit is engaged A 10 per minute rate based on AC contracted capacity limitation shall be enforced This ramp rate limit applies both to the increase and decrease of power output and is independent of meteorological conditions The ramp rate control tolerance shall be 10 8 POWER QUALITY REQUIREMENTS The developer shall address in the design of their facilities potential sources and mitigation of power quality degradation prior to interconnection Design considerations should include applicable standards in
11. arable Hours are for a time period that is not exactly equal to the time period that the meters measure and record the information data for that shorter time period not measured will be calculated by prorating it over the time period recorded For example if the Event Hours is ten 10 minutes and pertinent data is recorded and kept for fifteen 15 minute intervals the data for the shorter time period will be calculated as the product of the data for the fifteen 15 minute interval multiplied by the ratio of ten 10 divided by fifteen 15 i e the actual Event Hours divided by the time interval for which records for these data are available 9 APPENDIX F 1 OUTPUT CURVES To be provided by SELLER and approved by PREPA two weeks after the Initial Synchronization Date Output Curves shall be revised annually
12. ccuracy of 0 5 of the controlled voltage at the POI f The VRS shall be calibrated such that a change in reactive power will achieve 95 of its final value no later than 1 second following a step change in voltage The change in reactive power should not cause excessive voltage excursions or overshoot g The generator facility VRS must be in service at any time the PVF is electrically connected to the grid regardless of MW output from the PVF h The VRS dead band shall not exceed 0 1 REACTIVE POWER CAPABILITY AND MINIMUM POWER FACTOR REQUIREMENTS The total power factor range shall be from 0 85 lagging to 0 85 leading at the point of interconnection POI The reactive power requirements provide flexibility for many types of technologies at the Renewable Energy Facility The intent is that a PVF can ramp the reactive power from 0 85 lagging to 0 85 leading in a smooth continuous fashion at the POI The 0 90 power factor range should be dynamic and continuous at the point of interconnection POI This means that the PVF has to be able to respond to power system voltage fluctuations by continuously varying the reactive output of the plant within the specified limits The previously established power factor dynamic range could be expanded if studies indicate that additional continuous dynamic compensation is required It is required that the PVF reactive capability meets 0 85 Power Factor PF range based on the PVF Aggregat
13. cluding but not limited to IEEE Standards 142 519 1100 1159 and ANSI C84 1 Typical forms of power quality degradation include but are not limited to voltage regulation voltage unbalance harmonic distortion flicker voltage sags interruptions and transients 9 SPECIAL PROTECTION SCHEMES PV facility shall provide adequate technology and implement special protection schemes as established by PREPA in coordination with power management requirements 10 GENERAL INTERCONNECTION SUBSTATION CONFIGURATION An interconnecting generation producer must interconnect at an existing PREPA switchyard The configuration requirements of the interconnection depend on where the physical interconnection is to occur and the performance of the system with the proposed interconnection The interconnection must conform at a minimum to the original designed configuration of the switchyard PREPA at its sole discretion may consider different configurations due to physical limitations at the site Puerto Rico Electric Power Authority Minimum Technical Requirements for Photovoltaic Generation PV Projects 6 11 MODELING AND VALIDATION The Contractor shall submit to PREPA a Siemens PTI certified PSS E mathematical model and data related to the proposed PV facility When referred to the PV facility model this shall include but is not limited to PV inverters transformers collector systems plant controllers control systems and any other e
14. ction Page 2 qt Major licenses permits Major material procurement Start Construction Engineering 70 complete Utility technical submittals complete Operating procedures finalized Field Test Protocols Finalized Start test and start up On site Field Tests Completed Complete Compliance with Minimum Technical Requirements Initial synchronizing date Commercial operation 15 PSSE Mathematical Model Parameters and Data Requirements The Contractor shall submit to PREPA a PSS E mathematical model and data related to the proposed PV Facility When referred to the PV Facility model this shall include but is not limited to PV converter transformers collector systems plant controllers control systems and any other equipment necessary to properly model the PV Facility for both steady state and dynamic simulation modules It is required that the Contractor submits both an aggregate and detailed model of the PV Facility The aggregate and detailed model of the PV Facility shall not be submitted in preliminary form The Contractor shall be required to submit user manuals for both the PV converter and PV Facility models The mathematical models shall be fully compatible with the latest and future versions of PSS E It is preferred that the models are PSS E standard models In the case that the Contractor submits user written models the Contractor shall be required to keep these models as well as its corresponding user manual current with t
15. e officially certified by Siemens PTI before a specific and validated PSS E mathematical model of the complete PV facility be submitted to PREPA The Contractor shall be responsible of submitting the official reports and certifications from Siemens PTI otherwise the mathematical model shall not be considered valid The Contractor shall be responsible to submit Siemens PTI certified PSSE mathematical models of any kind of compensation devices ie SVC STATCOMs DSTATCOMs BESS etc used on the PV facility It is preferred that the models are standard models provided with PSS E In the case that the Contractor submits user written models the PV facility Contractor shall be required to keep these models current with the future versions of the PSS E program until such time that PSS E has implemented a standard model In its final form the mathematical model shall be able to simulate each of the required control and Puerto Rico Electric Power Authority Minimum Technical Requirements for Photovoltaic Generation PV Projects 7 operational modes available for the compensation device and shall be compatible with the latest and future versions of PSSE Final adjustments and parameters settings related with the control system commissioning process shall be incorporated to the PSSE mathematical model and tested accordingly by the PV facility Contractor and PREPA system study groups The Contractor shall also perform on site field tests fo
16. ection 9 13 b SELLER fails to perform annual tests for compliance with the MINIMUM TECHNICAL REQUIREMENTS FOR INTERCONNECTION OF PHOTOVOLTAIC PV FACILITIES as required in Section 12 2 and c SELLER fails to keep the Facility PSS E mathematical models current with the future versions of the PSS E program thirty 30 Days after a PSS E version upgrade is notified in writing by PREPA to SELLER provided that PREPA s notice shall include all the necessary technical information needed by SELLER and the manufacturer to update the model and provided further that the upgrade of the model is feasible in that 30 Day time period If for any reason information from the manufacturer is required as such information is proprietary and confidential SELLER shall obtain the manufacturer s approval or performed the necessary change to provide a functional upgraded PSS E mathematical model For the avoidance of doubt any disconnection due to a and b above may be of an extended or Second Amendment Contract 2012 P00045 Renewable Energy Authority LLC Page 4 7 4 7 5 permanent nature if not cured by SELLER in a timely manner and PREPA shall have no liability to SELLER in connection with those disconnections as per Sections 7 1 7 2 and 7 3 Any disconnection shall end promptly after SELLER cures such non compliance Following the Commercial Operation Date SELLER will provide to PREPA a non binding estimate of short term next Day and nex
17. ed MW Output which is the maximum MVAr capability corresponding to maximum MW Output It is understood that positive PF is where the PVF is producing MVAr and negative PF is where the PVF is absorbing MVAr Puerto Rico Electric Power Authority Minimum Technical Requirements for Photovoltaic Generation PV Projects 3 This requirement of MVAr capability at maximum output shall be sustained throughout the complete range of operation of the PVF as established by Figure 2 Steady State Reactive Power Capability Dynamic Reactive l l Power Capability l i 1 i i Absorbing MVARs p u 1 0 062 05 0 484 0 484 0 5 0 62 0 Producing M Di MVAR per unit 1 0 Producing MVARs p u Figure 2 Reactive Power Capability Curve 4 SHORT CIRCUIT RATIO SCR REQUIREMENTS Short Circuit Ratio values System Short Circuit MVA at POI PV Facility MVA Capacity under 5 shall not be permitted The constructor shall be responsible for the installation of additional equipment such as synchronous condensers and controls necessary to comply with PREPA s minimum short circuit requirements Puerto Rico Electric Power Authority Minimum Technical Requirements for Photovoltaic Generation PV Projects 4 5 FREQUENCY RIDE THROUGH FRT e 57 5 61 5 Hz No tripping continuous e 61 5 62 5 Hz 30 sec e 56 5 57 5 Hz 10 sec e lt 56 5 or gt 62 5 Hz Instantaneous trip 6 FREQUENCY RESPONSE REGULATION PV facility sha
18. ent Novation SELLER and PREPA expressly agree that no amendment or change order which could be made to the Agreement and this Second Amendment during its term shall be understood as a Contractual Novation unless both Parties agree to the contrary specifically and in writing The previous provision shall be equally applicable in such other cases where PREPA gives the SELLER a time extension for the compliance of any of its obligations under the Agreement as amended or where PREPA dispenses the claim or demand of any of its credits or rights under the Agreement as amended Second Amendment Contract 2012 P00045 Renewable Energy Authority LLC Page 12 20 Capitalized Terms Unless otherwise stated capitalized terms used in this Amendment which are not defined in this Amendment have the meaning given in the Agreement All other terms and conditions specifications stipulations insurances and requirements established in the Agreement remain unaltered and fully enforceable This is the Agreement between the appearing parties under this Second Amendment and so is hereby ratified IN WITNESS WHEREOF the Parties hereto have agreed to execute this Second Amendment in San Juan Puerto Rico on this 21 day of May 2014 Effective Date of this Second Amendment Puerto Rico Electric Power Authority Renewable Energy Authority LLC Rub lez Cruz Executive Director President Social Security 660 43 3747 Social Security
19. ent Years 21 to 25 the Energy Purchase Price shall be 0 1450 kWh of NEO not subject to escalation The calculation of the Energy Payment is included in Appendix C Green Credits Payment Beginning with the Pre Operation Period and continuing throughout the Term of this Agreement Second Amendment Contract 2012 P00045 Renewable Energy Authority LLC Page 9 yr GCP GCPP x NEO Where GCP is the Green Credits Payment GCPP is the Green Credit Purchase Price for Agreement Years 1 to 25 which shall be equal to 0 0225 kWh of NEO and not subject to escalation The calculation of the Green Credit Purchase Price is included in Appendix C 7 Article 16 TERMINATION in the Agreement is hereby amended by deleting in its entirety and replacing it with the following Termination of this Agreement shall occur only upon a expiration of the Term of this Agreement as provided in Article 5 b mutual written consent of the Parties c the election of PREPA following a Development Abandonment or Permanent Closing d the election of the non defaulting Party following the occurrence of a Breach under Article 17 e the election of PREPA following delay by SELLER in achieving Commencement of Construction by six 6 months after the Effective Date of this Second Amendment f delay by SELLER in achieving the Commercial Operation Date by the date which is eighteen 18 Months after the Effective Date of this Second Amendment or
20. er Technologies International Siemens PTI PSS E plotting software 3 8 The software shall support data export in ASCII CSV and PSS E formats 3 9 The software shall support image export in JPG BMP or WMF formats 3 10 The software shall have the following analysis capabilities for the data and signals primary and calculated Fast Fourier Transform FFT Peak analysis Filter functions Series and scalar mathematic square root inversion square sum gain offset etc 3 11 The software shall performs the following power engineering calculations on line and off line and measurements ii iii iv V vi vii viii 4 General Three phase and single phase Power Real reactive apparent Power Factor Power angle rms line and phase voltage rms current Power system frequency DC voltage and currents AC voltage and currents 4 1 Environmental Conditions Page 4 of 5 4 1 1 Operating temperature 0 C to 50 C 4 1 2 Operating humidity 95 non condensing 4 2 Equipment cabinet and corresponding accessories The cabinet should have test switches at the front of the panel for the three phase voltages and currents The test switches should have a minimum rating of 600 V rms and 30 A rms semi flush mounted back connected equal or similar to ABB FT 1 style no 129A514G01 The signals analog and digital should terminate on terminal blocks inside the cabinet before the connection to the Dy
21. ergency or operating condition pursuant to Article 7 2 is declared by PREPA PREPA s dispatching centers may curtail the Facility s output The Facility will remain curtailed or disconnected from PREPA s system Second Amendment Contract 2012 P00045 Renewable Energy Authority LLC Page 5 8 4 following an Emergency until SELLER has received permission to reconnect from PREPA s dispatching center Any disconnection or reduction in the Facility s output required by PREPA under this Agreement shall be of no greater scope and of no longer duration than is required by the Emergency or operating condition pursuant to Article 7 2 consistent with Prudent Utility Practices Upon an Emergency or operating condition pursuant to Article 7 2 that results in any disconnection or reduction in the Facility s output PREPA shall as soon as practicable after the occurrence of the Emergency or operating condition provide written notice to SELLER describing the particulars of the occurrence and its estimated duration and shall diligently use all reasonable efforts consistent with Prudent Utility Practices to remedy the Emergency or operating condition In any situation were PREPA causes a reduction of Net Electrical Output or a disconnection of the Facility PREPA shall treat the Facility no less favorably than other facilities connected to PREPA s grid on such occurrences PREPA shall have no liability to SELLER in connection with any disconnection o
22. he future versions of the PSS E program until such time that PSS E has implemented a standard model On site field tests to demonstrate compliance with PREPA s Minimum Technical Requirements for Interconnection of Photovoltaic Facilities MTRs shall be performed by the contractor The data and PSS E model shall also be validated updated and officially certified according to PREPA requirements when final field adjustments and parameters measurements are completed during the on site field tests to be performed to the facility by the contractor The on site field tests shall be witnessed and coordinated with PREPA s personnel The Contractor shall be responsible to submit PSSE mathematical models of any kind of compensation devices ie SVC STATCOMs DSTATCOMs BESS etc used on the PV Facility It is preferred that the models are standard models provided with PSS E In the case that the Contractor submits user written models the PV Facility Contractor shall be required to keep these Appendix B Interconnection Page 3 16 17 models current with the future versions of the PSS E program until such time that PSS E has implemented a standard model In its final form the mathematical model shall be able to simulate each of the required control and operational modes available for the compensation device and shall be compatible with the latest and future versions of PSSE Final adjustments and parameters settings related with the cont
23. in Vega Baja Puerto Rico Facility and NOW THEREFORE the Parties hereby agree to amend the following Articles of the Agreement 1 Article 1 DEFINITIONS is amended to include the term Contracted Capacity and defines it as follows means the maximum AC Capacity to be delivered by SELLER at the Interconnection Point which shall be 20 MW 2 Article 1 DEFINITIONS the Term Emergency is amended as follows Emergency means an operational condition or situation affecting PREPA s system including security and reliability that in the reasonable judgment of PREPA based on the 2 Second Amendment Contract 2012 P00045 Renewable Energy Authority LLC Page 2 Prudent Utility Practices and the Prudent Electrical Practices applicable is likely to result in imminent disruption of service to a significant number of its customers or is imminently likely to endanger life or cause damage to property 3 Article 5 Term Section 5 1 is hereby amended by deleting the word Twenty 20 and replacing it with the word Twenty Five 25 4 Article 5 Term Section 5 2 is hereby amended by deleting the first sentence The Term of this Agreement may be extended by mutual agreement of the Parties for up to two consecutive periods of five 5 years each following the expiration of the initial Twenty Agreement Year Term and replacing it with the sentence The Term of this Agreement may be extended by mutual ag
24. irements for Photovoltaic Generation PV Projects 8 APPENDIX F DETERMINATION OF NET ELECTRICAL OUPUT NOT RECEIVED To calculate the Net Electrical Output not received by PREPA during any time period the following method will be used A First the specific time period Event Hours of the Day Event Day that PREPA does not receive Net Electrical Output in connection with a disconnection or curtailment of the Facility will be determined B Second the average solar irradiation as measured by the working pyranometers in the Facility as well as the average temperature will be determined for the Event Hours C Third SELLER will provide output curves Output Curves for the Facility based on the power curves provided by the manufacturer and taking into account all factors that may affect the output such as but not limited to temperature derating DC and AC losses inverter losses and transformer losses SELLER will validate the Output Curves during the first three months of operation of the Facility Output Curves together with the Event Hours determined under Paragraph A and average solar irradiation and temperature determined under Paragraph B will be used to calculate the Net Electrical Output that would have been generated by the Facility during the Event Hours APPENDIX F 1 illustrates the format of Output Curves SELLER will provide PREPA the actual power curve furnished by the manufacturer of the photovoltaic modules in
25. l threshold high level low level in band out band etc ii Rate of change ex frequency variation df dt iii Manual input keyboard trigger iv Request from remote computer v Event input status digital signal status 3 4 3 A re trigger function shall be available which permits the equipment to generate a new event register if a second disturbance is detected while the recording of the first disturbance is still in process This process should continue if more disturbances occur in the new registers 3 5 The acquisition software shall include a user defined pre trigger interval option as well as a user defined post trigger interval for the information captured in the case of triggered events The minimum range of the pre trigger interval should be from 0 to 60 seconds and the minimum range for the post trigger interval should be O to 300 seconds In addition the date time and type of trigger that initiated the event shall be included as part of the disturbance record Page 3 of 5 3 6 The acquisition software shall have the following capabilities i ii iii iv v vi Time displays ex Oscilloscope Digital Status display ex High Low 1 0 Multiple displays and multiple signals in displays in real time and off line Display resizing Programmable conversion of range and units of signals Independent range for signals 3 7 The acquired data shall be available in a format directly compatible with Siemens Pow
26. ll provide an immediate real power primary frequency response proportional to frequency deviations from scheduled frequency similar to governor response The rate of real power response to frequency deviations shall be similar to or more responsive than the droop characteristic of 5 used by conventional generators PV facility shall have controls that provide both for down regulation and up regulation PV technologies in combination with energy storage systems such as but not limited to BESS flywheels and hybrid systems are acceptable options to comply with PREPA s frequency response and regulation requirements For small frequency deviations for example less than 0 3 Hz the PV facility response shall be proportional to the frequency deviation based on the specified 5 droop characteristic The frequency response dead band shall not exceed 0 02 For large frequency deviations for example in excess of 0 3 Hz the PV facility shall provide an immediate real power primary frequency response of at least 10 of the maximum AC active power capacity established in the contract The time response full 10 frequency response shall be less than 1 second If energy storage systems are utilized to comply with the frequency regulation requirements and during a disturbance the system frequency stays below 59 7 Hz the facility frequency response shall be maintained for at least 9 minutes After the ninth minute the real power primary frequency
27. metrical and asymmetrical overvoltage conditions specified by the following values illustrated in Figure 1 Minimum time to remain Overvoltage pu saline 2 VOLTAGE REGULATION SYSTEM VRS Constant voltage control shall be required Photovoltaic System technologies in combination with Static Var Controls such as Static Var Compensators SVCs STATCOMs and DSTATCOMs are acceptable options to comply with this requirement A complete and detailed description of the VRS control strategy shall be submitted for evaluation a Photovoltaic Facilities PVF must have a continuously variable continuously acting closed loop control VRS i e an equivalent to the Automatic Voltage Regulator in conventional machines b The VRS set point shall be adjustable between 95 to 105 of rated voltage at the POI The VRS set point must also be adjustable by PREPA s Energy Control Center via SCADA Puerto Rico Electric Power Authority Minimum Technical Requirements for Photovoltaic Generation PV Projects 2 c The VRS shall operate only in a voltage set point control mode Controllers such as Power Factor or constant VAR are not permitted d The VRS controller regulation strategy shall be based on proportional plus integral Pl control actions with parallel reactive droop compensation The VRS Droop shall be adjustable from 0 to 10 e At zero percent 0 droop the VRS shall achieve a steady state voltage regulation a
28. namic System Monitor The AC DC digital exciter voltage and exciter current signals should be in different terminal blocks The terminal blocks should have a minimum rating of 600 V rms and 30 A rms except the exciter voltages signals see below Examples of terminal blocks are GE CR151B2 and Marathon 1512 STD The current signals should terminate on shorting type heavy duty terminal blocks equal or similar to Marathon catalog number 1506SC The terminal blocks used for the excitation voltage of the generators must have a nominal voltage capacity greater than 800 V DC A switch or breaker for isolation purposes is also required for the excitation voltage and current signals 4 3 Documentation 4 3 1 The equipment shall include a documentation package that contains the user operation and maintenance manuals and the mechanical and electrical equipment drawings The documentation should be in hard copy and in digital format 4 3 2 The equipment documentation shall include a copy of the software 4 4 Spare parts recommended by the equipment manufacturer shall be included in the DSM purchase order 4 5 Warranty The equipment warranty shall include part and service for a period not less than 60 months from the delivery day 4 6 Equipment Training Installation Support and Commissioning 4 6 1 An on site equipment operation and configuration training should be included 4 6 2 The DSM manufacturer shall perform the equipment commissioning
29. ontract 2012 P00045 Renewable Energy Authority LLC Page 3 j promptly and prudently seeking a remedy to cure in accordance with Prudent Electrical Practices and d any other circumstance that can be mitigated by PREPA through economic means Some of these situations may include but are not limited to power quality problems in Vega Baja TC as well as outages and disconnections vias libres of the above mentioned transmission center due to disturbances maintenance and or improvement Notwithstanding Sections 7 1 and 7 2 above PREPA may also disconnect the Facility or reduce the Net Electrical Output by curtailment when the following conditions are present a the Facility fails to comply with the requirements of APPENDIX E MINIMUM TECHNICAL REQUIREMENTS FOR INTERCONNECTION OF PHOTOVOLTAIC PV FACILITIES which include but are not limited to power factor low high voltage ride through low high frequency ride through voltage control requirements power quality requirements and frequency response as set forth in APPENDIX E or if PREPA has amended the requirements of APPENDIX E then only if such amendment is applicable to the Facility pursuant to Section 9 13 and x the SELLER has received written notice of any such amendment y SELLER has had an appropriate period of time to comply with any such amended requirement and z PREPA has agreed to reimburse SELLER for any costs in excess of the Modification Limit pursuant to S
30. pecified by PREPA b Two independent telecommunication circuits One voice grade to link the SCADA system to the facility RTU using DNP protocol though a designated PREPA communication node A second fiber optic circuit to link PREPA s network to the facility in order to access protection equipment revenue meters and the DSM trough the ruggedcom security device as specified by PREPA c A voice telephone extension for the purpose of communicating with Monacillos TC and Ponce TC Second Amendment Contract 2012 P00045 Renewable Energy Authority LLC Page 7 8 8 d A telephone line and equipment to transmit and receive facsimile e messages to confirm the oral communication between PREPA and SELLER A Dynamic System Monitor equipment in accordance with APPENDIX E TECHNICAL SPECIFICATIONS FOR THE DYNAMIC SYSTEM MONITOR for recording the power disturbance caused by electro mechanic swings and to measure the system response to the swing disturbance SELLER shall be responsible of providing installing wiring and commissioning of all the equipment and components for the DSM system necessary in the Interconnection Facilities The items provided by SELLER in accordance with this Section 8 7 shall be subject to the approval of PREPA within thirty 30 calendar days of SELLER providing the required specifications Each Party shall keep complete and accurate records and other data required for the proper adminis
31. quipment necessary to properly model the PV facility for both steady state and dynamic simulation modules It is required that the Contractor submits both an aggregate and detailed version of the PV facility model At a later stage in the process it is also required that the Contractor submits as built PSS E mathematical models of the PV Facility The Contractor shall be required to submit user manuals for both the PV inverter and the PV facility models including a complete and detailed description of the voltage regulation system VRS and frequency regulation system model implementation The mathematical models shall be fully compatible with the latest and future versions of PSS E It is preferred that the models are PSS E standard models In the case that the Contractor submits user written models the Contractor shall be required to keep these models current with the future versions of the PSS E program until such time that PSS E has implemented a standard model The Contractor shall submit to PREPA an official report from Siemens PTI that validates and certifies the required mathematical models including subsequent revisions The data and PSS E model shall also be updated and officially certified according to PREPA requirements when final field adjustments and parameters measurements and field tests are performed to the facility by the contractor The mathematical model either PSS E standard or user written model of the PV facility shall b
32. r reduction in the Facility s output required by PREPA under Section 7 1 Section 7 2 or Section 8 3 unless a the Facility is otherwise capable of generating and delivering electrical output b Seller has provided PREPA with written notice of such capability and c the duration of any such disconnection or curtailment or combination thereof has exceeded the applicable waiting period set forth in the next three sentences after delivery of SELLER s notice to PREPA With respect to a disconnection or curtailment that is not attributable to severe weather conditions the waiting period shall be the earliest to occur of i a maximum twenty four 24 consecutive hours ii twenty four 24 hours in the aggregate during any thirty 30 Day period and iii one hundred twenty 120 hours in the aggregate during any Year With respect to a disconnection or curtailment that is attributable to severe weather conditions including a hurricane or tropical storm the waiting period shall be the earlier to occur of i seven 7 consecutive Days and ii three hundred 300 hours in the aggregate during any Year To the extent a disconnection or curtailment or combination thereof exceeds any of the time periods described in the preceding sentences as applicable then PREPA shall pay as determined in Section 11 2 a to SELLER for each Second Amendment Contract 2012 P00045 Renewable Energy Authority LLC Page 6 8 5 8 6 8 7 hour of the c
33. r the identification development and validation of the dynamic mathematical models and parameters required by PREPA for any kind of compensation devices used at the PV facility The mathematical models of the PV facility and its required compensation devices shall be officially certified by Siemens PTI before a specific and validated PSS E mathematical model of the complete PV facility be submitted to PREPA The Contractor shall be responsible of submitting the official reports and certifications from Siemens PTI otherwise the mathematical models shall not be considered valid PV facility Owners that provide user written model s shall provide compiled code of the model and are responsible to maintain the user written model compatible with current and new releases of PSS E until such time a standard model is provided PREPA must be permitted by the PV facility Owner to make available PV Facility models if required to external consultants with an NDA in place 12 TRANSIENT MATHEMATICAL MODEL The Contractor shall be responsible of providing a detailed transient model of the PV facility and to show that it is capable of complying with PREPA s transient Minimum Technical Requirements 13 DYNAMIC SYSTEM MONITORING EQUIPMENT The developer of the PV facility shall be required to provide and install a dynamic system monitoring equipment that conforms to PREPA s specifications Puerto Rico Electric Power Authority Minimum Technical Requ
34. reement of the Parties for one consecutive period of five 5 years following the expiration of the initial Twenty Five Agreement Year Term 5 Articles 7 Dispatching and 8 Control and Operation of The Facility are hereby amended by deleting in its entirety and replacing it with the following language ARTICLE 7 DISPATCHING 7 1 PREPA agrees that the Facility will be designated as a must run unit to the full extent of the Contracted Capacity of 20 MW and will not be disconnected except to the extent necessary due to a Force Majeure or an Emergency that cannot be avoided or mitigated without the shutdown or disconnection of the Facility 7 2 Notwithstanding Section 7 1 PREPA may require SELLER to disconnect the Facility or reduce the amount of Net Electrical Output by curtailment due to operating conditions that may affect safety margins or reliability levels in PREPA s electrical system provided however any reduction in the level of Net Electrical Output or disconnection required by PREPA hereunder shall be based upon and implemented in a manner consistent with Prudent Utility Practices PREPA shall not be entitled to disconnect the Facility or reduce Net Electrical Output under this Agreement due to a economic factors b any inconvenience or other condition not expressly included in the preceding sentence c any condition of any nature including those specified in the preceding sentence if PREPA is not Second Amendment C
35. rol system commissioning process shall be incorporated to the PSSE mathematical model and tested accordingly by the PV Facility Contractor and PREPA system study groups PV Facility Owners that provide user written model s shall provide compiled code of the model and are responsible to maintain the user written model compatible with current and new releases of PSS E until such time a standard model is provided PREPA must be permitted by the PV Facility Owner to make available PV models if required to external consultants with an NDA in place Additional data necessary for dynamic modeling At a minimum any necessary control system model inverter compensator and excitation limiter models including the time constants gains limits description block diagrams and configuration Transient Mathematical Model The contractor shall provide a detailed transient mathematical model of the PV Facility with a compliance report that shows the level of compliance of the facility s design with PREPA s Minimum Technical Requirements for Interconnection of Photovoltaic Facilities MTRs The contractor shall submit the compliance report for evaluation by PREPA before the on site field tests PREPA and the contractor must agree on the compliance report results before the on site field tests for verifying compliance of the Facility with the MTRs are performed VEGA SERENA SOLAR PLANT RENEWABLE AUTHORITY CORP ELECTRICAL INTERCONNECTION VEGA BAJA
36. separate inputs one AC and one DC 100 240 VAC 60 Hz and 100 150 DC Some applications could require DC supply of 48 VDC 10 verify before the equipment acquisition 2 6 Measurement accuracy 2 6 1 Voltage measurement error shall be less than 0 3 of reading 2 6 2 Current measurement error shall be less than 0 3 of reading Page 2 of 5 al 3 Software 3 1 The software platform of the equipment shall be compatible with the latest version of windows operating system 3 2 The equipment remote communication shall be thru TCP IP network connectivity LAN The remote communication should permit at least the set up and data retrieval of the equipment The equipment should have the capability to perform at least the following functions remotely i Modification of the configuration ii Retrieval of captured events iii Remote event triggering 3 3 The equipment shall have the capacity of time synchronization with GPS system A GPS receiver and GPS antenna shall be included 3 4 Triggers 3 4 1 The equipment shall support user defined programmable triggers Triggering shall be initiated based upon primary quantities voltage current and frequency calculated quantities watts Var power factor apparent power etc digital signals or small analog signals 3 4 2 The trigger thresholds shall be based on limits gradients equations and status Examples of trigger conditions that shall be available are i Leve
37. stalled in the Facility D Fourth in order to ascertain the reliability of the above calculation of Net Electrical Output the same calculations described in the above Paragraphs B and C will be made for the same time period as the Event Hours in the nearest Day prior and in the nearest Day following the Event Day for which data is available Comparable Hours The Net Electrical Output so calculated will be compared to the Actual Net Electrical Output APPENDIX F DETERMINATION OF NET ELECTRICAL OUPUT NOT RECEIVED PAGE 2 delivered to PREPA for the same time periods If the Net Electrical Output calculated from the Output Curve is plus or minus 5 five percent of the actual Net Electrical Output delivered to PREPA no adjustments will be made to the Net Electrical Output calculated in Paragraph C if the calculations described in the preceding Paragraph D show a variance in Net Electrical Output of more than 5 five percent the Net Electrical Output calculated from the Output Curve for the Event Hours will be adjusted by multiplying it by a ratio Adjustment Ratio e The Adjustment Ratio will be calculated by taking the arithmetic average of the two ratios resulting of using the Net Electrical Output delivered to PREPA for the Comparable Hours as the numerator and the Net Electrical Output predicted by the Output Curve for the Comparable Hours as the denominator If any period during the Event Hours and thus the Comp
38. t week production based on the previous Day production estimated strength of the solar radiation the next Day and week and based on the meteorological forecast for the region and site The Parties shall include in the Agreed Operating Procedures the procedures and protocols necessary for providing said estimates PREPA acknowledges no intent to reduce the Net Electrical Output by curtailment or disconnection under this Agreement outside of those described in this Article 7 and Article 8 ARTICLE 8 CONTROL AND OPERATION OF THE FACILITY 8 1 8 2 8 3 SELLER shall at least sixty 60 Days prior to the Commercial Operation Date submit a written schedule of Scheduled Outages Scheduled Outage Program for the remaining portion of the first Year of the Facility s operations and if the Commercial Operation Date occurs after September 1 for the following Year setting forth the proposed Scheduled Outage periods Thereafter SELLER shall submit to PREPA in writing by September 1 of each Year its proposed Scheduled Outage Program for the next Year SELLER shall use reasonable efforts to notify PREPA of any Non Scheduled Outages at least twenty four 24 hours in advance and coordinate all Non Scheduled Outages with PREPA If an Emergency is declared by PREPA PREPA s dispatching centers may disconnect the Facility from PREPA s system or reduce the Net Electrical Output by curtailment to the extent permitted by Article 7 2 If an Em
39. tations and Warranties of each Party a PREPA hereby represents and warrants to SELLER i the execution and delivery by PREPA of this Amendment and the Amendment itself have been duly authorized by PREPA s Governing Board and any other applicable PREPA governing body in accordance with applicable law and A do not and will not require any additional internal or external consent or approval B do not and will not violate any provision of Act No 83 of May 2 1941 as amended or its regulations or any material indenture contract or agreement to which it is a party or by which its properties may be bound and ii this Amendment is a legal valid and binding obligation of PREPA enforceable against PREPA in accordance with its terms except as may be limited by applicable bankruptcy insolvency or similar laws affecting the enforcement of rights generally b SELLER hereby represents and warrants to PREPA i the execution delivery and performance by SELLER of this Amendment have been duly authorized and do not and will not A require any additional internal consent or approval of SELLER or B violate any provision of SELLER s certificate of formation or operating agreement or any material indenture contract or agreement to which it is a party or by which it or its properties may be bound or any law ordinance Second Amendment Contract 2012 P00045 Renewable Energy Authority LLC Page 11 15 16 17 18 rule
40. tration of this Agreement a All such records shall be maintained for a minimum of five 5 years b after the preparation of such records or data and for any additional length of time required by regulatory agencies with jurisdiction over the Parties provided however that neither Party shall dispose of or destroy any records without thirty 30 Days prior notice to the other Party Within ten 10 Days after receipt of the notice of intention to destroy or dispose the other Party shall have the right to require the notifying Party in writing to retain and deliver to it certain records at its sole cost and expense Any records so notified shall be delivered to the Party requesting their return in no more than ten 10 Days except for any information that is deem confidential information by the disclosing Party or that it may not otherwise be delivered because is protected by intellectual property rights The disclosing Party shall deliver a list of all the documents or items not being delivered because they are confidential or subject to proprietary rights but not the actual documents or items SELLER shall maintain an accurate and up to date operating log at the Facility with records of i real and reactive power for each hour ii changes in operating status and Scheduled Outages and iii any unusual conditions found during inspections g Second Amendment Contract 2012 P00045 Renewable Energy Authority LLC Page
41. urtailed energy after the waiting period in accordance with APPENDIX F DETERMINATION OF NET ELECTRICAL OUTPUT NOT RECEIVED PREPA s liability pursuant to this Section 8 4 for any single disconnection or curtailment shall be offset by any insurance proceeds actually received by Seller from any business interruption insurance policy that Seller may obtain Each Party shall cooperate with the other in establishing Emergency plans including recovery from a local or widespread electrical blackout voltage reduction in order to effect load curtailment and other plans which arise SELLER shall make technical information and data available to PREPA concerning start up times and black start capabilities If the Facility has a Scheduled Outage or a Non Scheduled Outage and such Scheduled Outage or Non Scheduled Outage occurs or would occur coincident with an Emergency PREPA may request that SELLER shall make reasonable efforts consistent with Prudent Utility Practices and with PREPA s approval to reschedule the Scheduled Outage or Non Scheduled Outage or if the Scheduled Outage or Non Scheduled Outage has begun to expedite the completion thereof SELLER shall provide as a minimum at its expense and PREPA shall install were applicable as SELLER expense the following communication facilities linking the Facility with PREPA s dispatching centers a One Remote Terminal Unit RTU including setup installation and configuration which shall be s
42. uts with the capacity to increase them to a minimum of 96 inputs depending in the application required analog signals The minimum resolution for the A D converter shall be of 16 bit The sampling rate shall be programmable up to a minimum of 250 samples per cycle 15000 samples per second The analog inputs shall permit at least the following types of signals a PT voltage 150 V rms minimum Accuracy better or equal to 0 3 b CT currents 5 Arms minimum Accuracy better or equal to0 3 c DC voltages of at least 800 V Accuracy better or equal to 0 3 d Small Analog Signals Accuracy better or equal to 0 3 i Current 4 20 mA ii Voltage 0 200 mV 1V 10 V 2 1 2 The equipment shall have at least 16 digital inputs with the capacity to increase them to a minimum of 48 inputs depending in the application required digita signals The minimum input voltage range of the digital inputs should be 0 150 V The digital inputs should be included as a user defined software triggering input 2 1 3 The equipment shall be able to record power system frequency with a resolution of at least 0 001Hz 2 2 The equipment shall have a built in microprocessing unit with color monitor keyboard and mouse from which all commands controls and setup parameters may be entered All setup parameters shall be store in a non 2 3 2 4 2 5 volatile media to prevent loss of setup data if power is interrupted This microprocessing unit shall
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