UK Clean‑Tech Startups Turn Used EV Batteries and Wind Parts into Profitable Climate Solutions

TL;DR: UK startups Connected Energy and Renewable Parts are converting retired EV batteries and worn wind‑turbine parts into high‑value energy storage and component solutions, delivering measurable carbon savings and growing revenues.

Context The clean‑tech sector is shifting from building new hardware to extending the life of existing assets. As renewable generation expands, the need for storage and reliable turbine components rises. Two British firms illustrate how second‑life strategies can meet that demand while generating profit.

Key Facts Connected Energy, based in Norfolk, assembles “second‑life” EV batteries—cells that no longer meet vehicle range requirements but retain enough capacity for stationary storage. The company bundles these cells into large power packs that supply on‑site electricity to data centres and other high‑load users, and that can trade energy by buying cheap grid power, storing it, and selling it back at peak prices. Head of sustainability Tania Saxby, the sole female hire in 2019, now leads the firm’s carbon‑accounting. She quantifies that using repurposed batteries avoids the emissions associated with manufacturing new ones, a claim she validates through a cradle‑to‑grave life‑cycle assessment.

Renewable Parts, a four‑person startup founded by former Rolls‑Royce engineer James Barry, focuses on remanufacturing wind‑turbine components such as gearboxes, actuating rams and circuit boards. Remanufacturing accounts for more than 40 % of the company’s revenue and is still expanding. By refurbishing worn parts instead of casting new ones, the firm reduces the material and energy intensity of turbine maintenance.

Avoiding the production of one tonne of steel—an essential material in both battery casings and turbine structures—cuts roughly three tonnes of carbon emissions. Both firms leverage this metric to demonstrate the climate impact of their services.

What It Means These business models prove that extending the life of existing hardware can be financially viable and environmentally significant. Connected Energy’s storage packs enable renewable generators to smooth output, while Renewable Parts’ refurbished components keep wind farms operating without the carbon cost of new manufacturing. As more sectors electrify and the volume of end‑of‑life batteries and turbine parts swells, the market for second‑life solutions is set to expand. Watch for policy incentives and larger utility contracts that could accelerate adoption of these circular‑economy technologies.