

4·
5 hours agoTo be fully self sufficient you have to meet your energy consumption during the most cloudy days in winter.
2 days storage gives you a 5% chance of a blackout at some point during the year.
4 days storage gives you a 1% chance of a blackout at some point during the year.
You will not get to 0%.
Pumping 1500L of water up into a tower doesn’t seem difficult or expensive.