How to Preserve 100 % of the Remuneration Planned in a PPA (Power Purchase Agreement)?

March 27th, 2017

This power plant of about 40 MWc is located in India. The operator has to supply solar power forecasts of the production every day to the grid.

In the case of a deviation between the forecast and the measured production, the MW/h price agreed in the PPA can be reduced up to 30 % over the corresponding period.
The financial stake is such that the best “day-ahead “forecasting technologies must be implemented.

The example of March 27th, 2017 shows to what extent the various models were perfectly calibrated. A light cloudy spell only, in the middle of the day, was not anticipated the day before.


Figure 1: D+1 forecast (orange) vs actual production (blue)