What does the site energy battery cabinet look like

As more of our energy is generated from renewable sources, battery storage, sometimes referred to as Battery Energy Storage Systems (BESS) are becoming an increasingly important part of the electricity network. How does battery storage work? Demand for electricity can vary dramatically across the day.

Wind turbines only generate power when the wind blows, solar farms when there is enough sunlight – and that might not match the pattern of demand. Which is where battery storage comes in. When the amount of power being generated exceeds demand, battery storage systems charge up and store the energy.

They therefore smooth out the peaks and troughs in power generation and help match it to demand. What do the battery schemes look like? The batteries are housed in units that look like a shipping container that's about 12m long, and are usually painted green.

The batteries are housed in units that look like a shipping container that's about 12m long, and are usually painted green. Each unit contains about 2MW of batteries, although that's changing all the time as batteries become more efficient.

Each unit contains about 2MW of batteries, although that's changing all the time as batteries become more efficient. The number that can fit on a piece of land depends on a whole variety of site-specific factors, like topography and the shape of the site.