With this Office Excel plugin you can retrieve Wattsight's forecasts and actual data. The access to data is depending on a Wattsight subscription, and you login using your Wattsight login credentials.
Within the API you can find data from Wattsight´s coverage of the European Electricity market:
We provide customers with the insight they need to better understand the European power market by forecasting fundamentals and prices for the short, medium and long-term horizon.
For users that does not have an active subscription to the Wattsight service you can register for a free trial here: https://www.wattsight.com/get-access/ Please note that our products are intended for power market professionals and our current subscription pricing starts at around $200/month.