Solar Photovoltaic Power Plant: Best Practices

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Best Practices for Setting up Grid Connected Solar Photovoltaic Power Plant in India

Text of Solar Photovoltaic Power Plant: Best Practices

  • 1. From Allocation to Execution:Best Practices- Gensol Consultants Pvt Ltd

2. Project Allocations & Status950 MW750 MW 110 MWRooftop and other smallPhase I of JNNSM solar power plantsPhase I & phase II of covering plants of capacityconnected of capacity up Gujarat Solar Policy more than 5 MWto 2 MW 3. Project Allocations & Status 950 MW 750 MW110 MWRooftop and other smallof the total projects JNNSM Financial Closures II of Phase I of havePhase I & phase in1/3rd solar power plantsto 2 MWplacecovering plants of capacityconnected of capacity up and EPC Contractors finalized. Solar Policymore than 5 MWGujarat 4. The Process Flow Detailed Vetting of PlantProject ReportDrawingsCommissioning AllocationExecution Land ContractorOnsiteFinalizationFinalization Monitoring 5. Land Finalization Parameter PurposeIMPORTANTMetrological Resource AssessmentEnergy Generation Capacity of substation Nearest Substation Availability of feeder Transmission Losses Accessibility to siteEase of Delivery of materialsWater Availability Water requirement during construction Nearby Terrain Shadow EffectsSite Topography To analyze the water blockage problems and placement of mounting structures Availability of Manpower For Construction and subsequent O&M GPS Survey Site LayoutStorm HistoryDust Losses Mounting Structure Strength Type of SoilTo analyze the resistivity and load bearingcapacity of soilConstruction power availability Power Requirement during construction 6. Detailed Project ReportWhy is itContents required? Site Analysis and Solar radiation resource assessment Prefeasibility Analysis Technology Selection : Solar PV modules and BoS Acts as a Reference / Guidance Document Plant and Machinery (Solar PV array and Electrical System) As an instrument for Financial Closure Civil and Architectural requirement for the project Necessary for claiming Carbon Credits Annual energy generation from power plant System Schematics Power plant operation and maintenance Project implementation and schedule Project Financials Risk Analysis 7. Detailed Project ReportContents Site Analysis and Solar radiation resource assessment Technology Selection : Solar PV modules and BoS Plant and Machinery (Solar PV array and Electrical System) Civil and Architectural requirement for the project Annual energy generation from power plant System Schematics Power plant operation and maintenance Project implementation and schedule Project Financials Risk Analysis 8. EPC Contractor FinalizationRelease Shortlisting & Contract of RfPFinalizationDesign Defining Exhaustive Scope of Work with well defined Quality Criteria Designing Engineering Calculations, Site Layout and System Sizing Civil Leveling, Foundations, Mounting Structures, Control Room etc. Electrical Solar Panels, Inverters, Switchyard, Monitoring etc. Testing Performance Acceptance/Guarantee Test Operation & Maintenance Comprehensive Maintenance & Guarantees Arranging and coordinating pre/post bid meetings for clarification to thequeries of bidders. 9. EPC Contractor FinalizationReleaseShortlisting & Contract of RfP FinalizationDesign Defining Criteria for Comparison Determination of Minimum Qualification Criteria Assigning Weightage to Parameters Preparing Comprehensive Scoring Sheet Arriving at Final Scores for Responses from EPC Contractors Drawing Project Implementation & Drawdown Schedule Conducting Background Checks on Tie-ups for Equipment Supply Conducting Rounds of Negotiation 10. EPC Contractor Finalization Release Shortlisting & Contractof RfPFinalizationDesign Parameters for Judgment Equipment Type | Market Presence | Efficiency | Adherence to Standards | Rate of Degradation EPC Contractor Experience in India and abroad | EPC & O&M Cost | Manpower Experience & Availability | Type & Extent of Guarantees Offered Other Parameters Office in India | Collaboration with International EPC Company 11. EPC Contractor Finalization Release Shortlisting & Contractof RfPFinalization DesignFormat3 separate contracts are typically drawn to reduce tax burden:1. Supplies Contract2. Services Contract3. Operation & Maintenance ContractFurther, Supplies Contract can be broken down into Import Supplies for Inverters andmodules and Domestic Supplies for the rest of the BoS. 12. EPC Contractor FinalizationRelease Shortlisting & Contract of RfPFinalization DesignContents Snapshot General Terms of Agreement Variations & Adjustments Special Terms of Agreement Termination Payment Milestones Warranties Liquidated Damages Force Majeure Insurance Guarantees Performance Bank Guarantee Defects Liability Advance Bank Guarantee Minimum Energy Generation Bank Guarantee 13. Vetting of Drawings & DesignDrawingPurposeSite Layout Avoid Shading Losses Module Mounting Structure Strength to withstand mechanical and wind loadsZinc Coating for 25 year corrosion free lifeControl Panel, Living Accommodation, Pantry,CIVILMain Control Room BuildingBathrooms etc. To ensure proper strength of foundations forSwitchyardtransformers and other equipment Water Pipes & Drainage LayoutTo avoid water logging Approach Roads & Pathways To ensure proper access to all parts of the plant Equipment Layout To minimize system lossesELECTRICAL System Sizing (Cables, Inverters, Switchyard) For efficient working while ensuring redundancyEarthing To ensure safety of man and equipmentSingle Line DiagramTo comprehend the fundamental structure of the plant 14. Onsite MonitoringQualityControlClaims &ReportingBillsMethodologyMonitoringDocumentcontrol and FactoryInspection managementComplianceto standards 15. Commissioning of PlantCommissioningEvacuation Validating actual generation against guaranteed generation Validating the technical parameters of equipment Preparation of final acceptance tests Conducting performance tests after successful commissioning Schedule for periodic checks Preparation of annual maintenance contract along with final list of spares and tools 16. Commissioning of Plant CommissioningEvacuation Liasoning and approvals from authorized government bodies The following need to be communicated and finalized with the state utlities: Laying of transmission lines ABT meters Evacuation infrastructure Grid availability Dedicated feeder Evacuation point 17. Ideal Timeline Project Activities 1 2 3 4 5 6 7 8 Completion of site visit and due diligence Bid Management EPC contractor finalization Vettings of designs and drawings Contract drafting Commissioning of 25% of Project Commissioning of 50% of Project Commissioning of 75% of Project Commissioning of 100% of Project Testing and Handing Over Evacuation arrangement 18. Take Away It takes only 2% change in PLF to take a project from state of art todisastrous and vice versa, please make sure you are on the right side of this change. THANK YOU 19. Contact Us:Gensol Consultants Pvt Ltd14 - 15, 2nd Floor, Camps Corner 2,Opp. Auda Garden, Prahladnagar,Ahmedabad 380015, GUJARAT W: www.gensolsolar.com E: solar@gensolconsultants.com Ph: +91-79-39122200