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Battery storage

Battery storage is designed to store and then release additional electricity during peak demand periods, as well as provide back-up during network failure to avoid any associated downtime costs.

If you are generating renewable energy, you can store this in the battery unit/s and release it as and when you need it. This can also help you manage costs due to volatile energy prices and regulatory changes.


Battery storage solutions provide many benefits to businesses, primarily security around the quantity of supply, with an emergency back-up source for improved resilience and virtual additional power through support load at peak times.

Battery usage can also reduce your net energy spend as you can shift your load to charge the battery during cheap tariff hours and then use the power it has stored during peak times to reduce the cost, as well as reducing TNUoS (Transmission use of System) and DUoS (Distribution Use of System) charges.

You can also earn revenue from the National Grid Ancillary Services for Firm Frequency Response (FFR) and Extended Frequency Response (EFR).

Sizing a battery storage solution

We will work with you to calculate your battery storage requirements. Factors to take into account include:

  • Rate at which power can be discharged
  • Length of time you will need that power
  • Energy storage capacity required

We will also look at:

  • Cycle or round trip efficiency (the ratio between the amount of energy put in and the amount you get out)
  • Response time of the unit to start importing or exporting power, as well as speed of responding to a power outage
  • Length of warranty required (normally up to 15 years with 50% residual capacity)

Supply and finance

Control Energy Costs can supply and install a number of high quality battery storage units, including the Tesla Powerwall and Tesla PowerPack.

We can also provide a number of finance options. Get in touch to find out more.