The Intermittent Generation Forecast API which powers the Wind and Solar Generation Forecast widgets on the em6 dashboard, are now available to call direct. The API can be filtered by wind or solar, and offers up to 36 hours of forecast data alongside cleared generation and a discrepancy value which shows the difference between forecast and cleared generation. Information is aggregated by Island or Nationwide for wind, and just Nationwide for solar.
The API's URL is https://api.em6.co.nz/ords/em6/data_api/ig_aggregated and details on how to access the API can be found on page 103 of our integration guide. Contact call@ems.co.nz if you have any queries about accessing the API, or would like to know more about our other feeds.
EMS
Nov. 19, 2025, 1:33 p.m.