High-quality renewable energy installations.

We’ve spent more than 20 years designing and building renewable energy projects across the UK. We know where the hidden costs and risks are and will tell you about them before they bite you.

Fully funded options: solar and battery storage installed with no upfront cost.

Most solar companies won’t tell you if your inverters are a cyber-security risk.

We’re on your side, and we’re driven to get Net Zero done right.

How we work

From first look to a working system.

  1. 01

    Understand

    A clear picture of your consumption, costs, contracts and carbon, starting with a free review of your bills.

  2. 02

    Compare options

    Solar, storage, heat pumps, EV and efficiency, ranked by value and by what is practical on your site.

  3. 03

    Build the case

    Fully funded or capital purchase, costed with payback, IRR and sensitivities that finance will trust.

  4. 04

    Deliver

    We build it with our team and trusted partners, or manage the installers for you, through to commissioning.

Why Renmaker

Experience that gets projects built.

John Mustardé

John Mustardé

Co-founder · Engineering & delivery

Has personally overseen the construction of more than 300 MW of solar PV, from 10 kW commercial systems to 50 MW industrial installations, as well as operational microgrids.

Oliver Sylvester-Bradley

Oliver Sylvester-Bradley

Co-founder · Commercial & strategy

More than 20 years in clean energy and energy infrastructure, including senior roles at Solarcentury and Vattenfall Networks.

More about us ›

What our clients say.

“Most feasibility reports tell us what we already suspected. Renmaker told us what was actually viable, why three of our sites weren't worth pursuing, and got the remaining two through our investment committee first time.”
Head of Estates
Large local authority
“The hardware security advice was something we hadn't even considered. Once we understood the data routing risks from our existing monitoring equipment, it changed our procurement approach entirely.”
Energy & Sustainability Manager
Critical facilities operator
“We needed someone who understood both the technology and the internal politics of getting a capital project approved. Renmaker structured the business case in a way that finance actually engaged with.”
Director of Operations
Multi-site logistics operator
Free guides

Checklists to help high-quality projects get built.

Our free solar and battery storage checklists cover the security, data and supplier questions most feasibility reports never ask.

Browse guides & checklists
Get started

Find out what's worth doing on your site.

Send us your bills for a free review, or just ask us a question. We'll be honest about what's viable and whether we can help.