3 ms·
What I've seen in several articles is that peak power production seems to be as much a limiting factor as stored energy. I'm still haven't found a good explanat
by cycomanic 3y ago
What I've seen in several articles is that peak power production seems to be as much a limiting factor as stored energy. I'm still haven't found a good explanation why that is though. So if anyone could educate me, I'm all ears.
- tsimionescu 3y agoLet's take an absurd extreme case to illustrate - if you had a battery that could store 1GWh but could only discharge up to 1mW in an hour, how would you power an aluminum furnace with this battery? Assuming you are using batteries for continuous solar power, you basically need the batteries to be able to store enough power to last through the night, and to be able to match the solar power plant's peak power - otherwise, the grid can't power the same things during the night that it can during the day, which was the whole reason we wanted the batteries in the first place.
- Gare 3y agoBecause grid batteries are currently used as peak supply - if a production of power plants suddenly falls of by 10 GW or there is 10 GW additional demand, you have to quickly provide that 10 GW of power before other (cheaper) additional production can be ramped up.
- Gibbon1 3y agoMy suspicion is battery life estimating is complicated and proprietary. So your depreciation due to wear depends on both the rate of charge and the rate of discharge. My best guess is they shoot for a discharge rate of roughly C3. Meaning they can deliver the rated power for 3 hours. Suspect they keep the charge between 10 and 90%. So I think you can multiply watts by 4 to get watt-hours. That said I've looked for actual numbers in kwh and not found much.