The winter months and parts of the fall months are hardest due to a lack of sunshine. Without an EV, from March until late September a 5kWh battery is enough for me to keep my daily grid power consumption close to 0. A 5kWh plug-in battery now costs around 1299EUR. Pays back itself in a handful of years.
Batteries are similar to solar panels in this regard. With solar, the first couple of kilowatt-peak delivers the biggest savings. With batteries, it's the same with the first couple of kWh of storage capacity.
Batteries are similar to solar panels in this regard. With solar, the first couple of kilowatt-peak delivers the biggest savings. With batteries, it's the same with the first couple of kWh of storage capacity.