RENEWABLE ENERGY INTEGRATION IN TAMILNADU

RENEWABLE ENERGY INTEGRATION IN TAMILNADU

Generator Installed Capacity in MW CGS Nuclear 6% PURCHASE (LTOA, MTOA) 18% TN Hydro 2308 TN Thermal 4320 TN Gas 516 TN IPP 746 CGS Thermal 15% CPP 3% TN IPP 3% TN GAS 2% TN Thermal 15% TN Hydro 8% RES 37% Wind 28% Solar 6% Biomass 1% Cogen 2% CGS Thermal 4340 CGS Nuclear 1703 Purchase 3190 CPP 986 Wind 7858 Solar 1693 Cogen 690 Biomass 230 Total 28580

Details Achieved On Consumption 345.617 MU 29 th April 2016 Demand 15343 MW 29 th April 2016 Wind Energy 102.579 MU 4 th August 2017 Wind Generation 5096 MW 27 th July 2017 Solar Energy 9.681MU 12 th August 2017 Solar Generation 1621 MW 5 th July 2017 Solar Roof Top 91 MW 31 st July 2017

12000 10000 Upto July 2017 10471 8000 6000 6386 6778 7649 6411 7634 4000 3538 2000 0 Rajasthan Gujarat MP Maharastra Tamilnadu AP Karnataka

25000 20000 15000 10000 0 0 5762 25 8020 288 25 118 5675 2469 649 75 50 8884 11926 9834 543 0 1420 1500 5697 Biomass SHP Solar 5000 8600 8800 6200 7600 11900 8100 6200 Wind 0 Rajasthan Gujarat MP Maharastra Tamilnadu AP Karnataka

27-08-2017 Wind & Solar 37% Conventional and others 63% Total Day Consumption Conventional and others Wind & Solar 255.542 MU 159.904 MU 95.638 MU

04-08-2017 Total Day Consumption 298.694 MU Conventional and others 190,443 Wind & Solar 108.251 Wind 102,579 Conventional and others Wind & Solar 190.443 MU 108.251 MU Solar 5,672

Conven tional 307,97 9 92% RES 25.420 8% RES 8.880 23% 2017-18 All India Total 12,42,009 MU Conven tional 29.553 77% 2017-18 Tamil Nadu Total 38433 MU Up to June-17 Up to July-17

150,000 In MU 100,000 50,000 0,000 1 4 7 10 13 May-17 Jun-17 Jul-17 Aug-17 Total MU May 2017 June 2017 July 2017 16 19 22 Days 1360 MU 2440 MU - 2530 MU 25 28 31 May-17 Jun-17 Jul-17 Aug-17 Month

150,000 100,000 In MU 50,000 0,000 1 4 7 1013 16 19 22 Aug-17 Aug-16 Days Total MU August 2016 2510 MU August 2017 2010 MU 25 28 31 Aug-17 Month Aug-16

Hydro In MW 5000 4000 3000 2000 1000 0 00,30 05,30 Time 10,30 15,30 20,30 Hydro Gas Day Consumption 298.694 MU Wind Generation - 102.579 MU IPP CPP, Cogen, Solar TN Thermal Purchase CGS Wind Sources Gas IPP CPP, Cogen, Biomass Solar TN Thermal Purchase (LTOA, MTOA, STOA, Exchange) CGS Wind

Hydro In MW 5000 4000 3000 2000 1000 0 00,30 05,30 Time 10,30 15,30 20,30 Hydro Gas Day Consumption 266.86 MU Wind Generation - 10.599 MU IPP CPP, Cogen, Wind Solar TN Thermal Purchase CGS Sources Gas IPP CPP, Cogen, Biomass Wind Solar TN Thermal

Demand Curve for 2016 & 2017 18000 17000 16000 15000 14000 13000 14027 13580 14538 14082 Demand Actual met for 2016, 2017 & Demand Forecast for 2017 14781 14534 15343 15163 14687 15240 15043 14643 Demand Actual met for 2016 14938 14689 14443 14571 13958 14699 14278 13779 12000 11000 Forecasted Demand for 2017 10000 Jan Feb Mar Apr May Jun Jul Aug Sep Oct Nov Dec 2016 2017

TANTRANSCO developed the 400 KV Transmission corridors in order to accommodate the wind energy 1 Tamilnadu Backbone Network 1495 CKMS Rs.2186.15 crores 2 Tamilnadu Wind Power Corridor 846 CKMS Rs.1418.18 crores 33 Tamil Nadu Inter State transfer of Power 696 CKMS - Rs. 993.43 crores

Accommodation of maximum wind generation results Deviation Settlement Mechanism Surrendering of Central Generating Stations power. Backing down power purchase from LTA/MTOA Generators. Purchase of high cost power from IPPs. Intraday purchase during sudden withdrawal of wind generation Backing down the TANGEDCO Thermal Stations. Compensation charges towards Backing down

To improve spinning reserve in Tamil Nadu control area, the following Hydro pumped storage projects are under pipeline. Kundah 500 MW (4 X 125 MW) expected by 2020-21 Sillahalla - 2000 MW (4 x 500 MW) expected by 2021-22 Mettur 500 MW (4 X 125 MW) Tamilnadu experiencing much difficulty as there is no spinning reserve from Hydro generation, deprival of monsoon / very low hydro storage and due to less gas allocation for gas stations

Suggestions

1. Forecasting and Balancing mechanism are an essential tools to aid the integration of the increasing amount of wind energy. 2. Proper Forecasting helps us to make Renewable Energy appear more like a conventional power station. 3. Storage technology to store the renewable energy have to be cost effective. Regulations have to made. Cost for Energy Storage to be included during bidding of PPA itself. 4. Available Transfer Capability (ATC) margin between Regions to be revised practically. 5. Metering and Data storage for State and for the Country for all Generations and Demand.

6. Compensation have to be considered by MNRE for accommodating Renewable Energy in Tamilnadu control area for the following items for maintaining thermal units at low PLF Commercial losses to TANGEDCO on various accounts indirectly including compensation paid for the Central Generating Stations Expenditure made on to increase the Transmission corridor capability 7. Future Conventional generating plants have to be designed for low operating flexibility. 8. Strict adherence LVRT & HVRT 9. Facility / Delegation of power for real time trading of power to System Operation to avoid undue delay atleast during wind season with viable commercial implications.

In MW 9000 8000 7000 6000 5000 4000 3000 2000 1000 0 Jan.17 Feb.17 Mrz.17 Apr.17 Month Mai.17 Jun.17 Jul.17 Aug.17 Hydro Gas IPP Solar Sources CPP & Others Wind TNEB Thermal CGS & Purchase Back

In MW 9000 8000 7000 6000 5000 4000 3000 2000 1000 0 Jan.16 Feb.16 Mrz.16 Apr.16 Mai.16 Jun.16 Jul.16 Aug.16 Month Sep.16 Okt.16 Nov.16 Dez.16 Hydro Gas IPP Solar Sources CPP & Others Wind TNEB Thermal CGS & Purchase Back