Capacity & Power: Solar batteries store electricity for future use. The capacity, typically measured in kilowatt-hours (kWh), represents the energy they can hold. Power, on the other hand, determines how much energy a battery can provide at a given moment. Depth of Discharge (DoD): This indicates the amount of battery capacity used.
Effective Capacity per Battery = 10 kWh x 90% = 9 kWh Number of Batteries Required = Total Energy Needed ÷ Effective Capacity per Battery = 30 kWh ÷ 9 kWh = 3.33 This implies that a UK household would require at least 4 lithium-ion solar batteries to sustain their energy needs for three days without any solar input.
On average, this works out at just under 5kWh per day. Mark has neither the financial nor practical means to install renewable technology. However, he can use a home storage battery to take advantage of cheaper off-peak electricity rates, perhaps with the likes of the Octopus Flux tariff. Due to its compact size, Mark opts for the Giv-Bat 2.6kWh.
The capacity, typically measured in kilowatt-hours (kWh), represents the energy they can hold. Power, on the other hand, determines how much energy a battery can provide at a given moment. Depth of Discharge (DoD): This indicates the amount of battery capacity used. A higher DoD means you can utilise more of the battery’s total capacity.
In short, battery storage in your home can bring the following benefits: Let’s say your home has solar panels on the roof or even a wind turbine in the back garden. Without battery storage, a lot of the energy you generate will go to waste.
Considering a popular Lithium-ion battery that offers a 10 kWh capacity with a 90% DoD: Effective Capacity per Battery = 10 kWh x 90% = 9 kWh Number of Batteries Required = Total Energy Needed ÷ Effective Capacity per Battery = 30 kWh ÷ 9 kWh = 3.33