Scheduling of wind and solar power


Wind farms with collective capacity of 10 MW and above and solar farms with an installed capacity of 5 MW or above connected at  connection point of 33 KV level and above, whether connected to the transmission or distribution system of the State or to the inter-State transmission system, and who have not signed any PPA would submit their generation schedule to Regional Load Despatch Centre (RLDC) and National Load Despatch Centre (NLDC).

The wind generators shall be responsible for forecasting their generation upto  an accuracy of 70%. Therefore, if the actual generation is beyond +/- 30% of  the schedule, UI charges would be applicable to the wind generator. For actual  generation within +/- 30% of the schedule, no UI would be payable/receivable  by Generator.

The schedule of solar generation shall be given by the generator based on  availability of the generator, weather forecasting, solar insolation, season and normal solar generation curve and shall be vetted by the RLDC in which the  generator is located and incorporated in the inter-state schedule. If RLDC is of  the opinion that the schedule is not realistic, it may ask the solar generator to
modify the schedule. In case of solar generation no UI shall be payable/receivable by Generator.

In the case of intra-State sale of solar energy, the host State would pay the solar generator at the contracted rate for actual generation.

In the case of inter-State sale of solar energy, the purchasing State would pay  the solar generator at the contracted rate for actual generation. The implication  of UI charges due to the deviation for purchasing State and host State would be  settled through the RRF.

SLDCs/Control Centres of the States/UTs/DVC, in which the wind farm/solar  generator is located, shall provide the 15-minute block-wise data of schedule  and actual generation from wind farm generation/ Solar Generation plants as  recorded in the Special Energy Meters to the concerned RLDC and NLDC on a  weekly basis.

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3 responses to “Scheduling of wind and solar power

  1. I sumhow feel that the this entire process is biased towards solar, understandably to give an incentive, but no UI charges for solar generation means that they would not have to abide by the scheduling..it just doesn’t make sense.

  2. who have not signed any PPA would submit their generation schedule to Regional Load Despatch Centre (RLDC) and National Load Despatch Centre (NLDC).

    Pl. confirm -Who have not signed or signed PPA. Which is correct?

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