Intersolar rooftop PV

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  • http://blogs.hbr.org/cs/2012/10/do_your_slides_pass_the_glance_test.html
  • [Source: IEA, WEO 2010]
  • [Source: IEA, WEO 2010]
  • [Source: IEA, WEO 2010]
  • [Source: IEA, WEO 2010]
  • [Source: IEA, WEO 2010]
  • [Source: IEA, WEO 2010]
  • Intersolar rooftop PV

    1. 1. Off-grid Rooftop PV – An elegant alternative to the unreliable central grid November 6, 2012 Mumbai, India
    2. 2. Agenda1. Overview2. Rooftop PV – hope or hype?3. Challenges4. Takeaways Off-grid PV 2
    3. 3. India – Staring Into Darkness Generation Transmission Distribution - Power deficit – more than 9% - One nation, on grid – not yet - Net loss of utilities – INR 88,170 achieved Crores(~$17 Billion) - Capacity addition shortfall for 11th Plan Period – 26 GW - Transmission and Distribution osses – 27 % + - Power cuts of 50%+ - Capacity addition required for -12th plan(2012-17)– 76 GW - Majority of villages have no - 13th plan (2018-2) – 93 GW access to reliable and quality powerSources: Planning Commission of India, KPMG Off-grid PV 3
    4. 4. A window to the future.. Off-grid PV 4
    5. 5. Economic and environmental impact– Grim!! Off-grid PV 5
    6. 6. July 30-31, 2012The World’s Biggest Blackout happens in India Affects 620 million people
    7. 7. World notices.. Off-grid PV 7
    8. 8. The solution ?Distributed Power Generation Off-grid PV 8
    9. 9. Why Rooftop PV?• Reduced reliance on the grid• Offsetting the usage of diesel generators, leading to lower pollution• Max power generation at max load(for commercial segment)• Consumption at the point of generation• Significantly reduced transmission losses. – The Aggregated Technical and Commercial (ATC) losses in India are expected to be about 32%. – 1 kWh of power lost for every 3 kWh generated, which means 2 kWh of power from rooftop = 3 kWh of kWh from far-off thermal plant• Operation and Maintenance – Easy and inexpensive Off-grid PV 9
    10. 10. Off-grid or grid-tied PV? Parameters Off-grid Grid-tiedGrid Operates independent of the utility Connected to the utility power gridconnection power gridSuitability Suitable when utility power is not Used when selling power to utility or easily accessible or cannot be the system smaller than the minimum installed power load.Storage Yes NorequiredCost Costlier– due to battery bank Less expensiveInstallation Easy to commission Complex – restricted by the utility gridMonitoring Important, but not critical Requires grid related monitoring, feedback and safety features Off-grid PV 10
    11. 11. Why off-grid PV?• No uncertainty about Feed-in-Tariff• No off-taker risk(PPA risk) – losses of utilities at 88,170 Crores• No need for net-metering• System not dependent on the uptime of the grid• Does not lead to destabilisation of the grid• Ideal for non-electrified villages Off-grid PV 11
    12. 12. Agenda1. Overview2. Rooftop PV – hope or hype?3. Challenges4. Takeaways Off-grid PV 12
    13. 13. Rooftop PV market – Does it exist? Rooftop PV Market Pillar 1 Pillar 2 Pillar 3Policy/Regul Financial Technicalatory support Viability Feasibility The Foundation - Demand Potential Off-grid PV 13
    14. 14. The Foundation - Rooftop Potential KPMG’s report – “The Rising Sun – 2012”Estimate of potential – 4 GW by 2016-17Approach – Demand side economicsGrid parity - 2015-16Favourable trends for rooftop PV- Increase in power tariffs in many states- Transmission and Distribution losses of about 20%, which can be avoided by rooftop PV- Target achievable subject to creation of enabling environment by regulators and utilities Off-grid PV 14
    15. 15. Grid parity for rooftop PV by 2015-16 Source : KPMGAssumptionsa. Landed cost for consumer – 5.5 Rs/kWh in 2011-12b. Electricity price increase – 4%-5.5% per annumc. Solar price decline – 5%-7% per annum Off-grid PV 15
    16. 16. An Alternate approachFactors affecting installation- Affordability- Suitability of rooftop space Estimate of potential in 2020 70.0 62 GW of potential Installation 60.0 50.0 40.0 34 31 30.0 20.0 20.0 15 14 12.5 9.6 10.0 5.1 6.7 5 1.9 0.3 1.0 1.3 0.0 Residential Industrial Commercial Institutional Total Rooftop PV Customer Segment Conservative Scenario Realistic Scenario Optimistic Scenario Potential for rooftop PV systems – Very high!! Off-grid PV 16
    17. 17. Pillar 1 - Policy Support(MNRE)• Capital subsidy : 30% and or Soft loans of 5 %• 90% in Certain states• Accelerated depreciation• Channel partners for speedy disbursal of subsidies Off-grid PV 17
    18. 18. Pillar 1 - Policy Support(State Level) Off-grid 1. Kerala - 10,000 rooftop PV programme - 30% capital subsidy from MNRE - Rs.39,000 per system from Government of Kerala 2. Tamil Nadu – 5 Lakh green houses Grid Tied 1. Gujarat - Gandinagar rooftop programme 2. Tamil Nadu - Generation based incentive for domestic roof owners Off-grid PV 18
    19. 19. Pillar 2 - Financial Viability 1 kW System Without Battery(Rs. Lakhs) With Battery(Rs. Lakhs) Capital Cost 1.25 1.7 Capital Subsidy(30%) 0.378 0.51 Capital cost after subsidy 0.882 1.19• Accelerated depreciation benefit – Reduces system cost by another 23% Off-grid PV 19
    20. 20. Pillar 3 - Technology Feasibility• PV system for rooftop – well proven• Grid-interactivity – could be a problem, but not for off- grid projects• Mounting of PV dependent on load bearing capacity of roof and structural stability Off-grid PV 20
    21. 21. Rooftop PV market – Potential exists Market AttractivenessPolicy/Regulatory Technical Financial Viability support Feasibility Demand Potential Off-grid PV 21
    22. 22. Agenda1. Overview2. Rooftop PV – hope or hype?3. Challenges4. Takeaways Off-grid PV 22
    23. 23. Challenges• Financial – High upfront cost Rs. 1.5 Lakhs• Regulatory/policy – delay in subsidy disbursal• Infrastructural – Availability of roof-space without shadows(caused by trees and adjacent buildings), south facing roofs,• Structural Constraints – load bearing capacity of roof, uneven roofs – special structures can lead to additional cost Off-grid PV 23
    24. 24. Possible solutions• Easier and low cost financing• Leasing option – Pay as you go model or Build, Own, Operate and Transfer(BOOT)• Easier subsidy disbursal• Use of standardised systems Off-grid PV 24
    25. 25. Agenda1. Overview2. Rooftop PV – hope or hype?3. Challenges4. Takeaways Off-grid PV 25
    26. 26. Summary• Power crisis set to worsen• Rooftop PV potential is huge• Key to growth – Innovative business models Rooftop PV growth – inevitable Off-grid PV 26
    27. 27. Thank youMadhavan Nampoothiri Founder and Director madhavan@re-solve.in www.re-solve.in
    28. 28. Annexure Off-grid PV 28
    29. 29. Indicative Cost breakup – Solar PV system 1 kW 1 Module ₹ 60,000 2 Inverters ₹ 25,000 3 Mounting Structure ₹ 10,000 4 Building and Civil works ₹ 10,000 5 Isolation Transformer ₹ 6,000 6 Wires and Electricals ₹ 1,000 7 Engineering & Project Management ₹ 3,000 8 Battery Total ₹ 1,15,000 9 Contingency ₹ 0.10 Capital Cost ₹ 1,26,500.00 Capital subsidy - 30% ₹ 37,950.00 Landed cost after subsidy ₹ 88,550.00 Off-grid PV 29

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