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Three Hills invests in Sinewave, a leading UK grid connection provider for EV and renewable infrastructure from its dedicated Impact platform

27 August 2025 • Investment Activity
  • Three Hills is pleased to announce the acquisition of a significant minority stake in Sinewave, a UK-based Independent Connection Provider (ICP) that delivers mission-critical grid connection services to the electric vehicle (EV), renewable energy, and data centre sectors.
  • The investment will support Sinewave’s continued growth ambitions, including further expansion into high-growth markets, and strategic development initiatives.
  • The transaction marks the third investment from Three Hills’ sustainability-focused strategy, Three Hills Impact, and is structured as a mix of preferred equity and senior secured debt.

London, 27th August 2025 – Three Hills, a private markets investment firm specialised in providing bespoke capital solutions to entrepreneurs and management teams in Europe and North America, announces the completion of its investment in Sinewave, a leading UK-based provider of grid connection and maintenance services for EV charging, solar and battery storage, data centres and other energy infrastructure applications.

Founded in 2015 and headquartered in Swindon, England, Sinewave designs, installs, and maintains high- and low-voltage electricity networks up to 400 kilovolt (kV), delivering turnkey solutions across the entire lifecycle of infrastructure projects. The company has built a strong reputation for technical excellence and robust delivery, with a top-tier position in the UK EV ICP market and a rapidly growing presence in renewables and data centres.

Three Hills has acquired a significant minority stake in Sinewave, combining preferred equity and senior secured debt, in line with its strategy of providing flexible capital solutions to support the growth ambitions of middle market businesses.

This investment reflects Three Hills Impact’s commitment to supporting resilient, mission-critical businesses with strong growth trajectories and impactful business models. Sinewave has delivered exceptional performance over recent years, marked by outstanding revenue and profitability growth, with continued growth supported by a substantial contracted backlog. Positioned at the heart of the UK’s energy transition, the company is well placed to capitalise on the accelerating demand for EV infrastructure and renewable energy deployment.

In parallel, Sinewave’s operations directly support Goal 7 of the United Nations’ Sustainable Development Goals (Affordable and Clean Energy). Moreover, its B Corp certification and carbon savings reporting demonstrate a deep commitment to sustainability, aligning closely with Three Hills’ impact strategy.

Marco Anatriello, Partner at Three Hills, said:

“Sinewave is a standout example of a business delivering essential infrastructure for the energy transition. Its strong operational track record, technical capabilities, and impact-driven culture make it an ideal partner for Three Hills. We are excited to support Adam and the team as they continue to drive significant growth and innovation in grid connection services.”

Adam Woodley, CEO and Founder of Sinewave, added:

“We are delighted to welcome Three Hills as a strategic partner. Their flexible capital approach and deep understanding of infrastructure businesses will be invaluable as we enter the next phase of growth. This partnership will allow us to expand our capabilities, strengthen our market position, and continue delivering high-quality solutions to our clients.”

This transaction follows Three Hills’ recent investments in Socomore and MECH-I-TRONIC, reinforcing the firm’s commitment to supporting high-growth industrial and infrastructure businesses across Europe.

Three Hills was advised by Opus Corporate Finance, Eversheds (legal), CIL (commercial diligence), Cortus (financial & tax diligence), LCap Group (human capital), RSM (tax structuring) and Vista (insurance diligence). Sinewave was advised by KPMG (sell side M&A and tax), Thrings LLP (legal), Baringa (commercial) and RSM (financial and tax diligence).