I have two solar panels that can generate around 960w/hr. Both panels cost around $400 ($200x2). Cheap.
Storing that energy is quite expensive. an Anker Solix 3800, which is around 3.8kwh, costs $2400 USD. To store 10kwh would cost $7200 USD (which gets us more than 10kwh).
If that cost asymmetry can come down then it becomes feasible to use solar power to provide cheap/local electricity in poor countries at a house scale.
There are way cheaper options than the Anker Solix 3800. Here are some options, in no particular order:
- $3,300: 10 kWh with 2x EG4 WallMount Indoor 100Ah.
- $3,110: 14 kWh with 1x WallMount Indoor 280Ah.
- $2,690: 10 kWh with 1x Deye RW F10.2 B
- Will Prowse's YouTube channel has reviewed several battery builds that are >10 kWh and near $2,000, but they're DIY assembly.
Batteryhookup has batteries for $40/kWh :) just put together a off grid setup for a friend and 8kwh cost $400 in parts!
And still much more than the cost of the solar panels, which was GP's point.
The batteries in MWh range cost around 160 EUR/kWh all in. Including grid connection and BOP.
Wait that Anker Solix 3800 costs more than my 84kwh battery containing _car_ (3.8 kwh x 22 batteries)? Something not right.