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Wartsila partners with SSE to deliver grid-scale energy storage project

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Wartsila is partnering with SSE to deliver a 50 MW / 100MWh energy storage project in Salisbury, Wiltshire.

The energy storage system will be the first SSE’s new solar and battery division connect directly to the transmission network and aims to support the national grid with services such as wholesale market trading, crucial for balancing renewable energy generation throughout the day. 

The pipeline for energy storage projects has doubled over the past year, further demonstrating the importance of flexibility in helping to support additional renewables and ultimately the decarbonisation of the UK’s energy system. 

Kenneth Engblom, Vice President of Europe and Africa, Wärtsilä Energy said:

“The UK can capitalise on its massive potential for renewable energy by building more of it right now, but energy storage must not be overlooked – effectively balancing the intermittency of renewables is the missing part of the net zero puzzle. If properly deployed, energy storage will enable the grid to deal with fluctuations in renewable energy supply and ensure that the end users of energy have secured power supply as we switch to cheaper, cleaner energy. “

Richard Cave-Bigley, SSE’s Director of Solar and Battery, said:

“Today is a key milestone for SSE as we build out our first battery storage project at Salisbury, but it is also just the beginning of a multi-GW pipeline of solar and battery projects to come.

“Battery storage has a key role to play in helping the UK to decarbonise by ensuring we make the most of the increasing levels of renewable energy coming onto the Grid. SSE is investing £24bn over this decade (circa £7m a day) in low carbon infrastructure of this kind and we are delighted to be working alongside Wärtsilä to provide the balancing and flexibility services we need to help the UK get to net zero.”

According to Wartsila, who are involved in a number of similar projects across the UK, energy storage capacity will need to increase dramatically to 18GW by 2035 to effectively support the transition. Total installed capacity in the UK is currently approaching 2GW.


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