dgpcolorado
Well-known member
Thought this was fun:
As most here know, the Tesla "Gigafactory" is intended to produce batteries for stationary applications in addition to those used in the cars. Wired Magazine decided to take a look at What Size Battery Would You Need to Power Your House? For those of us with grid-tied solar, a battery backup is something that many of us have thought about. With a reliable — and affordable — battery system we could go off-grid.
The thought exercise in the article postulates a household usage of 2000 watts; that works out to 48 kWh/day. Seems way high to me since my household usage, exclusive of LEAF, is about 1/10th that. But I'm on the extreme end of conservation when it comes to electricity usage.
Anyway, by going with the highest density Li-ion battery, they come up with a battery volume of 0.52 m³ to generate 2000 W for a week. I'd need considerably less. But I don't agree with the assumption that a battery for a stationary application would need to have high density, since size and weight are relatively unimportant — unlike with an EV — and cost and materials usage would be the main concern. Nevertheless, it does appear that a battery to power a house for a week wouldn't have to be all that big, at least in physical size. But that 48 kWh for a week works out to 336 kWh, which is a pretty expensive battery if it is Li-ion. (Not that you'd really need one to last a whole week IMO.)
But, you ask, will it have TMS?
As most here know, the Tesla "Gigafactory" is intended to produce batteries for stationary applications in addition to those used in the cars. Wired Magazine decided to take a look at What Size Battery Would You Need to Power Your House? For those of us with grid-tied solar, a battery backup is something that many of us have thought about. With a reliable — and affordable — battery system we could go off-grid.
The thought exercise in the article postulates a household usage of 2000 watts; that works out to 48 kWh/day. Seems way high to me since my household usage, exclusive of LEAF, is about 1/10th that. But I'm on the extreme end of conservation when it comes to electricity usage.
Anyway, by going with the highest density Li-ion battery, they come up with a battery volume of 0.52 m³ to generate 2000 W for a week. I'd need considerably less. But I don't agree with the assumption that a battery for a stationary application would need to have high density, since size and weight are relatively unimportant — unlike with an EV — and cost and materials usage would be the main concern. Nevertheless, it does appear that a battery to power a house for a week wouldn't have to be all that big, at least in physical size. But that 48 kWh for a week works out to 336 kWh, which is a pretty expensive battery if it is Li-ion. (Not that you'd really need one to last a whole week IMO.)
But, you ask, will it have TMS?