Add Solar and Wind Generation Forecasts

[kmax12]

Some ISO publish forecasts of Solar and Wind.

ERCOT

NP4-732-CD - Wind Power Production - Hourly Averaged Actual and Forecasted Values NP4-742-CD - Wind Power Production - Hourly Averaged Actual and Forecasted Values by Geographical Region NP4-737-CD - Solar Power Production - Hourly Averaged Actual and Forecasted Values NP4-745-CD - Solar Power Production - Hourly Averaged Actual and Forecasted Values by Geographical Region

SPP

https://marketplace.spp.org/pages/forecast-vs-actual

MISO

TODO

PJM

TODO

NYISO

TODO

CAISO

ISONE

TODO

API

iso.get_generation_forecast()