Battery energy storage brings benefits

Camborne Energy Storage Ltd. (CES) is on a mission to deliver secure, low carbon power to the UK. The company’s Managing Director, Dan Taylor, explains how they’re helping to balance electricity supply and demand by deploying battery energy storage systems.

 We have worked with several partners to successfully deliver a 500kWh battery storage project. The Tesla Powerpack installation – which is co-located with a solar PV plant in Somerset – has the capacity to provide power for over 500 homes.

Poweri were responsible for connecting the system to Scottish and Southern Energy Power Distribution’s 11kV network and demand-side aggregator, Open Energi, are managing its day-to-day operation to optimise performance and maximise value.

Unlocking value from battery storage

The system is making money in two ways: time of use discharging, which involves storing electricity generated during periods of low demand and releasing it when demand peaks, and Firm Frequency Response (FFR), which involves the battery automatically charging and discharging to help balance electricity supply and demand second-by-second.

 This kind of smart flexibility is vital to support greater levels of renewable generation.

The system benefited from the solar PV plant’s existing export capacity but additional grid import was needed so that the system could still participate in FFR when the solar PV plant was not generating power.

A smart control strategy

Open Energi have worked closely with us to seamlessly integrate their Dynamic Demand software with the Tesla Powerpack. After a period of testing, Open Energi have applied machine learning and designed state of charge management techniques to deliver a control strategy which understands and responds to fluctuations in solar PV generation and electricity supply and demand to maximise revenues and minimise wear and tear.

This kind of smart flexibility is vital to support greater levels of renewable generation and the success of this project demonstrates the role of energy storage in delivering secure, low carbon power to the UK.

We have ambitious deployment targets with around 50MW of consented sites ready for construction. We aim to deploy further energy storage as stand-alone grid-connected assets, co-located with renewable generation and also as behind-the-meter solutions to major energy users throughout the UK to help make our electricity system fit for the future.