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Seasonal battery storage is currently impossible, making PV very much not a year round thing (for those places with any significant winter and associated heatin
by brnt 2y ago
Seasonal battery storage is currently impossible, making PV very much not a year round thing (for those places with any significant winter and associated heating requirement). You just can't install a MWh battery in your home right now.
- notTooFarGone 2y agoWhy do people think on cloudy days solar is just off? You can get 10-20% of peak from solar on a cloudy day. If you are in bumfuck nowhere with current prices you can build 5x-10x peak of your minimum energy needs with a fair amount of battery storage for fairly cheap 99% availability. If you want to go to that 100% you can still get grid energy to store based on weather or have a small generator with whatever you want to burn. Of course for the huge majority of people 90% availability is more than enough and is very cheap tendency going down.
- brnt 2y agoWinter here isn't just a cloudy day. I have PV. In 3-4 winter months I produce about 15% of the yearly output, but I consume 90+% of the heating energy. Even 10x my PVs is not going to be enough, and for even that I don't have the roof space. Even if I lay PV for the 95th worst percentile days, I still absolutely must have a grid connection because the kind of batteries to shift summer production to winter consumption simply don't exist.
- mharig 2y ago[dead]
- toomuchtodo 2y agoYou overbuild solar at utility scale to compensate for seasonal fluctuations.
- energy123 2y agoWind is stronger in winter. Wind charges batteries in winter, solar charges the same batteries in summer. Natural gas provides for the statistically unusual droughts until seasonal storage (e.g. hydrogen) is deployed, or significant overbuilding and/or cross-geography transmission is done.
- brnt 2y agoSure, but now you're not talking about something you install in a home.