Building Construction and
Renewable Energy Installers in the UK
At Greentek, we're building contractors and renewable energy installers working as one accredited team in the UK. From new builds and renovations to solar panels, heat pumps and battery storage, we create homes and commercial spaces that are built to last and cheaper to run, all without the hassle of juggling multiple contractors.
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Our Work
Building and Renewable Energy Projects We're Proud Of
Photos say more than promises ever could. Here are some of the extensions, refurbishments, insulation upgrades, and solar and heat pump installations we've completed for homes and businesses across the West Midlands and Wales. Our own people handled each one from the first day to the last.
Home Improvement
Air Source Heat Pump Conversion
A semi-detached home converted from a gas boiler to an air source heat pump, with the old system stripped out and a new heat pump, hot water cylinder and pipework installed by our own engineers.
Renovation
Bathroom Rebuild From Bare Brick
A tired bathroom stripped right back to the brick and pipes, then rebuilt by our own team with new plumbing, fresh plaster, grey tiles, a vanity unit and new lights.
Renovation
Bathroom Renovation With Wall Panels
A cramped, dated bathroom turned into a clean, bright room with wipe-clean wall panels, a new bath with a glass screen, a vanity unit and new flooring.
Home Improvement
External Wall Insulation
See the before and after of a full external wall insulation upgrade on an older property, where the solid walls were insulated and finished with a new render by our own installers.
Renovation
Full Property Refurbishment
Kitchen, bathroom and extension work completed alongside an energy efficiency upgrade, all run as one project by one team. See the house refurbishment before and after.
Solar & Energy
Solar PV Installation
A rooftop solar PV installation for a family home, designed around the roof and the household's electricity use, then fitted and commissioned by our own MCS certified team.
Client Stories
Trusted By Homeowners And Businesses Alike
See how our renewable energy solutions are helping customers reduce costs, increase efficiency, and gain greater energy independence.
Amjid H.
Home Owner
I got my insulation done by greentek they were fantastic from the start. On the way we had one two problems from the contractors but greentek took care of it! Kept me informed and solved the issues. They communicated consistently and kept me in the loop.
★★★★★
Luki
Business Owner
We required an urgent new boiler installation due to the old one breaking down and being unrepairable. Greentek Energy supplied and fitted a new one at very short notice so our tenants could have heating and hot water again. We are very grateful to Greentek Energy and would recommend them highly.
★★★★★
Ian B.
Home Owner
Part of the Ecobility company. the people at Greentek know their stuff. Got a quote in just under 20 minutes where others insisted on coming around the house. They were cheaper too!
★★★★★
Omer M.
Home Owner
Quick and efficient service.
★★★★★
Amjid H.
Home Owner
I got my insulation done by greentek they were fantastic from the start. On the way we had one two problems from the contractors but greentek took care of it! Kept me informed and solved the issues. They communicated consistently and kept me in the loop.
★★★★★
Luki
Business Owner
We required an urgent new boiler installation due to the old one breaking down and being unrepairable. Greentek Energy supplied and fitted a new one at very short notice so our tenants could have heating and hot water again. We are very grateful to Greentek Energy and would recommend them highly.
★★★★★
Ian B.
Home Owner
Part of the Ecobility company. the people at Greentek know their stuff. Got a quote in just under 20 minutes where others insisted on coming around the house. They were cheaper too!
★★★★★
Omer M.
Home Owner
Quick and efficient service.
★★★★★
About Us
One Team to Build, Heat and Power Your Property
Why hire a builder, a heating engineer and a solar installer when one team can do it all? Greentek brings building construction and renovation together with solar panels, heat pumps, battery storage and insulation. Because we plan everything as one job, the work happens in the right order: insulation goes in while the walls are open, cables are run before the plastering, and the heat pump is sized once the building is right. For you, that means less disruption, no work done twice, and a property that's cheaper to run from day one. It's why homeowners and landlords choose us as their energy efficiency company in the West Midlands and Wales.
Solar & Renewable Energy Solutions
We design solar PV, battery storage and air source heat pump systems around your property and the way you actually use energy, to help bring your running costs down.
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Construction & Renovation
Our own tradespeople build extensions, loft conversions, kitchens, bathrooms and whole-house refurbishments, and they finish every one with real attention to detail.
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Featured Services
Building and Energy Services We're Known For
From loft conversions and extensions to low-carbon heating, every job is delivered by one accredited in-house team.
Full Home Renovations
A full house renovation managed from start to finish. We plan the programme, run every trade in the right order and keep you updated at every stage.
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Kitchen & Bathroom Renovations
Kitchen and bathroom refurbishments delivered from design through to installation and final finishing.
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Certified and accredited with
Air Source Heat Pumps
Heat pump installation for homes and businesses. We apply for the Boiler Upgrade Scheme grant on your behalf.
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External Wall Insulation
External wall insulation and rendering that improves thermal performance, protects your walls and refreshes your home's appearance.
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Projects Completed
Solar, heat pump and storage installs delivered across residential and commercial properties.
Years Combined Experience
An accredited team with decades of hands-on energy and construction work behind it.
Industry Accreditations
Independently audited by MCS, TrustMark, Gas Safe and five other industry bodies.
Our Process
Four Steps.
Zero Surprises.
From the first call to the final handover, a clear, transparent process designed to deliver solar, home improvement, and renovation work with zero hassle.
Free Survey
Book online or call. A Greentek specialist visits your property to assess your solar, heating, insulation, or renovation needs.
Custom Quote
Get a clear, fixed-price quote with material and brand options, and an honest timeline, no hidden fees.
Expert Installation
Our in-house accredited team carries out the work, solar, heat pump, insulation, or renovation, no subcontractors passing the job around.
Handover & Warranty
We walk you through everything on completion, clean up after ourselves, and hand over your written warranty.
Service Areas
Local Builders and Energy Installers Near You
We're based in Solihull and work across Birmingham, Wolverhampton, Coventry, Dudley, Cardiff, Swansea and the towns around them. Greentek is an in-house team, not a franchise, so the people who survey your property are the people who do the work.
Common Inquiries