A battery energy storage system (BESS) can also help balance your local grid, improve energy resilience, and provide you with a revenue stream.
As the amount of renewable energy in our power generation mix increases, the reliability of energy generation decreases. This is because renewables generation is intermittent, as the turbines only turn when the wind blows, and solar relies on the sun shining.
BESS can help to smooth out the peaks and troughs in renewable energy generation by storing energy then discharging it when it is needed. National Grid values those organisations that can provide grid balancing services and is happy to pay for it.
National Grid ESO buys energy by the megawatt (MW). If your BESS provides less than 1MW – our E-STOR systems are 300kW – you won’t be able to sign a contract to directly supply the grid. However, there are companies out there called aggregators. As the name suggests they aggregate smaller providers to create those 1MW blocks to sell to the grid. You can read more about the aggregator model in our recent blog.