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Second Life EV battery energy storage: making a sustainable impact

Matthew Lumsden shares the story of Connected Energy’s origins and the goal behind our business of using second life EV batteries as battery storage.

12/09/2024

Repurposing electric vehicle (EV) batteries is emerging as a vital component of a sustainable energy future. We talk to Matthew Lumsden, CEO, about the sustainable impact of Connected Energy’s work.

With over a decade working on the concept of repurposing EV batteries and developing an end-product of a commercially sustainable energy store, it’s natural that sustainability is a big part of the Connected Energy story.

Founder and CEO Matthew Lumsden’s first interest in renewables and the climate started with a Greenpeace report on Acid Rain that he read in the mid ‘80s, and his career pivoted towards renewables and green energy in the early 2000s.

Connected Energy was formed in 2010, just as the EV industry was beginning to emerge. The company set out to find an answer to the question that people were beginning to ask: what would happen to electric vehicle batteries at the end of their life in a vehicle?

The company is now at the forefront of this revolution, developing energy storage systems powered by second life EV batteries. This approach not only improves commercial viability but also offers substantial environmental benefits.

Research by Lancaster University has quantified the environmental advantages of second life battery storage. Each MWh of our second life systems installed can reduce CO2 equivalent emissions by a 450 tonnes compared to systems using new lithium-ion batteries.

Matthew says: “All our work to date has shown that we can create a product using second life batteries which not only compares functionally to a first life system but has additional environmental and commercial benefits.”

Sustainable repurposing and recycling

Matthew continues: “Early end-of-life battery recycling is a waste of resources, by putting repurposing first we can get the maximum value from a battery, reducing the environmental impact and decreasing our reliance on natural materials throughout the supply chain.

“A lot of people – from vehicle manufacturers, fleet owners and those who finance fleets – own a lot of batteries that will come to the end of their first life within the next five years. They are going to be looking for somebody who will be able to extract the most environmental and financial value from them.

Most noteworthy, second life battery application does not reduce a battery’s recycling value. Furthermore, due to the speed at which recycling processes are improving—yielding higher-quality recyclate—using a battery for a second time means that in the long term, more value will be gained from recycling it.

Connected Energy is committed to driving this sustainable transformation. The company has built partnerships with industry and policymakers to build a robust ecosystem for second life batteries. We are also partnering to support on developing the third life of EV batteries – recycling. Find out more in our recent announcement with Altilium on researching battery recycling.

This is a prime example of the circular economy in action and forms a key part of our company’s longstanding aim to tackle climate change.

“Everyone in the business is motivated by making a difference and playing their part in tackling climate issues. It’s that bigger cause which connects us all and it is exciting to have an ethos which everyone believes in.”

Matthew Lumsden, CEO, Connected Energy

Interested in learning more about second life batteries?

Our recent whitepaper explores the technicalities, safety, benefits, and economic potential of repurposing EV batteries for energy storage. Download today to find out more.

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