UK energy storage power station connected to the grid

Thurrock Storage, the UK’s largest battery energy storage system (BESS) developed by Statera Energy is now energised and delivering electricity to the grid. This landmark 300MW battery storage site is capable of powering up to 680,000 homes with instantaneous power over two hours. [pdf]

FAQS about UK energy storage power station connected to the grid

What is the UK's largest battery energy storage system?

National Grid has energised what is being billed as the UK’s largest battery energy storage system (BESS), connecting the 300MW Thurrock Storage project to its transmission network at Tilbury substation in Essex.

Why is Thurrock storage partnering with national grid?

National Grid Electricity Transmission director of customer and network development John Twomey said: “Battery storage plays a vital role in Britain’s clean energy transition. Connecting Thurrock Storage, the UK’s biggest battery, to our transmission network marks a significant step on that journey.

Why is Thurrock storage energised?

Tom Vernon, Statera Energy CEO and Founder, said: We are delighted that Thurrock Storage is now energised, following its successful connection to the grid by National Grid Electricity Transmission (NGET). Increasing BESS capacity is essential for supporting the grid when renewable generation, such as solar and wind, is low or changes quickly.

What is the UK's largest solar installation?

In July, National Grid energised the 373MW Cleve Hill Solar Park in Kent — currently the country’s largest solar installation — which is connected to an adjacent Cleve Hill substation. BESS have become central to the UK’s efforts to balance an electricity system with growing amounts of intermittent renewable generation.

How many homes can national grid power?

National Grid says the system is capable of storing and discharging enough energy to power as many as 680,000 homes and will be used to absorb surplus low‑carbon generation and release power quickly when demand spikes.

How much battery storage capacity is there in the UK?

Fig 1: There is over 440 GWh of battery storage capacity in the UK pipeline including 274 GWh (61%) at the pre-planning stage. Most of the projects are in the early stages: either announced by developers, included in the TEC register, or have screening/scoping applications submitted.

How much does a UK energy storage system cost

As of 2025, the cost of installing a home battery system in the UK generally ranges between £3,000 and £10,000, depending on size, brand, and installation complexity. According to MCS data, the average cost of a battery storage installation in 2024 was approximately £8,035. [pdf]

FAQS about How much does a UK energy storage system cost

How much does solar battery storage cost in the UK?

It also touches on the cost of solar battery storage in the UK, which, according to Solar Guide, ranges from £1,200 to £6,000. Expensive? Perhaps it's a stretch, but shaving off a few pounds from your energy bill, might just be worth it!

How much does a 10kW solar battery cost in the UK?

The average price of a 10kW solar battery in the UK is approximately £8,000. Are solar batteries worth the cost in 2025? For larger properties, battery storage generally makes sound economic sense. However, for smaller homes, there are several factors to consider when determining whether it is economically viable.

How much does a 4kwh solar battery cost?

The cost of an entry-level 4kWh solar battery (supply and install) is approximately £4,000. However, don't forget you'll also need to factor in the cost of an inverter (if needed). The total cost to install a solar battery storage system, including a 4kWh battery, inverter and PV system, comes in at around £12,000 on average.

Are solar battery storage systems becoming more in demand?

With energy prices rising, it's no wonder solar battery storage systems are becoming more in demand. Many homeowners are wising up to storing their excess solar energy, rather than it funnelling back to the grid.

What is a typical home battery storage system size?

As we've seen, the typical home battery storage system size is around 4kWh, although capacities up to 16kWh are available. Let's get an overview of the costs for different battery sizes: Standard battery (10 - 15 year life). Lithium ion, 6000 battery cycles. Standard battery (10 - 15 year life). Lithium ion, 6000 battery cycles.

How can I reduce my solar panel battery cost in the UK?

There are currently solar panel funding opportunities which can significantly decrease the solar panel battery cost in the UK. Through the Smart Export Guarantee (SEG) you can earn money for exporting your excess solar energy back to the grid. Export tariffs vary with each energy supplier, but a good tariff is between 4-20p/kWh.

UK energy storage battery applications

Depending on the number of applications submitted in December, 2024 could be set to be the first year since 2018 where the number of applications has not surpassed the previous year; there would need to be more than 100 projects submitted to eclipse the total of 2023. 2024 is also set to see a small decrease in the average capacity of the projects being submitted, currently a 5MW decrease from 71MW in 2023 to 68MW in 2024 year-to-date. [pdf]

FAQS about UK energy storage battery applications

What is a battery energy storage system?

As renewable capacity is added to the grid, the need to store and flexibly manage electricity grows with it. This is where the crucial role of battery energy storage systems (BESS) come into play, storing and releasing energy for when it’s needed most. We look at what’s happening with the growth of BESS in the UK.

How many battery energy storage systems are there in the UK?

Towards the end of 2023, the UK had 3.5GW of battery storage capacity. That’s 3,500,000 watts. Although a large number, this is still very small in the grand scheme of things. At the time of writing, there are over 1,000 battery energy storage system (BESS) projects in the pipeline. These are growing in size too.

Why is battery storage so important in the UK?

The capability of these technologies to support renewables, support grid stability, and help deliver flexible energy storage is especially pertinent. By early 2025, there will be phenomenal growth in battery storage capacity taking place in the UK: Operational capacity: Around 5 GW of battery storage capacity is operational.

Why is battery energy storage important?

Battery energy storage is becoming increasingly important to the functioning of a stable electricity grid. As of 2023, the UK had installed 4.7 GW / 5.8 GWh of battery energy storage systems,1 with significant additional capacity in the pipeline. Lithium-ion batteries are the technology of choice for short duration energy storage.

Which batteries are used in energy storage?

Although recent deployments of BESS have been dominated by lithium-ion batteries, legacy battery technologies such as lead-acid, flow batteries and high-temperature batteries continue to be used in energy storage.

What is a battery energy storage system (BESS)?

Batteries are installed as battery energy storage systems (BESS), where individual battery cells are connected together to create a large energy storage device (Box 1). The size of a BESS is defined by its power capacity and its stored energy capacity (Box 2).