When I heard the news, my first though was a mix of "Oh. oh no..", "yay! no vendor-lock-in", and "OH, NO."
My expectation for the future is that a crowd fundraiser like on Wikipedia (does anyone remember those?) will be on the way for Mozilla... there is no way they can survive a 80% drop in the budget gracefully.
It might be cheap now, but I'm fearing the December - February i.e. the coldest part of the year when the price can get salty. Especially when/if the OL3 (or any other) plant trips offline, the price will bump up a lot.
The good part of having excess eletricity is that doing a "electric-kettle" district heating becomes feasible. So instead of reducing the (windmill) production, it makes sense to dump the excess generation capacity into district-heating. (which has large capacity to store the heat)