Renewable Energy for Self-Builders – Cornwall – GreenR Renewables

Build the Home You’ve Always Wanted - Powered by Renewables

You are not just building a house. You are building a space to live well - to breathe clean air, stay warm through winter, and know your energy choices are kinder to the planet. Whether you are tucked into a valley in Wadebridge or designing a low-carbon retreat by the coast, we will help you get the renewable systems right.

At GreenR Renewables, we design and install thoughtful, integrated solutions for self-builders across Cornwall. No shortcuts. No pressure. Just honest advice and solid engineering - from heat pumps to solar PV, MVHR and beyond.

Made for Self-Builds

If you have spent years planning your dream home, the last thing you want is an off-the-shelf system that fights against your design. We don’t believe in one-size-fits-all.

Our team helps self-builders make sense of renewables - not just what is available, but what is worth it. Whether you are looking for a quiet, efficient air source heat pump, an in-roof solar PV setup that complements your architecture, or a battery that keeps the lights on when the grid doesn’t - we will help you make choices that feel good now and still make sense ten years down the line.

We cover homes across Cornwall – Bude, Boscastle, Wadebridge, Padstow and beyond. If you are planning a new build and want real clarity on your energy strategy, we are here to guide the way.

What We Offer – All Under One Roof

You don’t need seven different contractors to stitch a system together. Here’s what we cover - all with one, joined-up design:

Heat Pumps

Whether you are after an air source or ground source heat pump for your self-build, we will size it properly, design it to work quietly and efficiently, and make sure it pairs beautifully with low-temperature underfloor heating. We are MCS-certified, with a keen eye on aesthetics as well as performance.

Solar PV

Our solar panels for self-build homes are designed for Cornish roofs. We will help you weigh up on-roof vs in-roof PV, deal with shading and orientation, and integrate everything with your heating or battery storage for maximum self-use, not just export.

MVHR

Clean, balanced air without the heat loss. Our whole-house ventilation systems use MVHR for airtight homes, with careful duct planning, low-noise units, and subtle finishes. Perfect if you are following passive house principles or simply want a healthier indoor environment.

Battery Storage

We don’t push batteries for the sake of it, but when they make sense, they make a big difference. We offer lithium battery systems for homes, sized for your usage, with options for backup power, peak shaving, and full app control.

EV Charging

Add a solar-aware EV charger from day one - or pre-wire for it now and plug in when you are ready. We will make sure it's neatly installed, won’t trip your main supply, and works with your solar or battery setup too.

Underfloor Heating

We design low-temperature underfloor heating that works with your heat pump, not against it. Zoned, responsive, and comfortable underfoot - whatever your flooring choice.

Energy Diversion

Got solar and hot water? Let’s put your excess to use before it heads to the grid. We install solar energy diverters that prioritise hot water, with options to integrate with your battery or EV too.
Where Self-Builds Often Go Off Track

And How We Help Set Them Straight

Self-builds are full of moving parts, and energy systems are often left until late.

That’s when problems crop up:

You are told the heat pump “will probably work”, but no one’s done a proper heat loss calc.

The builder installs ductwork that doesn’t quite fit the MVHR spec - now it’s noisy.

The solar company pushes you to overspend on panels with flashy promises and little real data.

You have got an EV but the charger trips the fuseboard whenever you tumble-dry in winter.

We see it all the time. That’s why we stay close to your plans from day one, making sure your self-build energy strategy fits your house, your lifestyle, and your budget, not someone else’s template.

Built Around You – Not Just the Tech

Practical Help for Cornwall’s Self-Builders

We are often brought in by people who have done their homework. They have read the forums, pored over layouts, and talked to builders. What they need now isn’t more noise - it is clear thinking.

Here is what working with us looks like:

We start by reviewing your plans. No charge. No jargon.

If you are mid-design, we’ll flag where plant spaces, duct runs, or pipe routes might clash.

You get a clear proposal with options - we won’t sell you gear you don’t need.

We liaise directly with your architect or builder when needed.

We install neatly, label clearly, and walk you through the whole setup before we leave.

Want extras? No problem. We can help with home automation for energy use, annual service plans or advice on Part L compliance and SAP calculations.
Stories from Builders Like You

“After searching around amongst various companies to design and install our energy and heating system for our self-build, GreenR stepped into the breach. Richard and Cai have an invaluable depth of knowledge and experience in renewables, which has been evident in every stage of the work done for our project so far. Heat pump and solar installed, executed meticulously, with an obvious eye for the design detailing as well as functional efficiency. Finding low impact technical solutions appears paramount, and contracting GreenR to install our system has been one of the most fortuitous aspects of our build up to this point. I would not hesitate to recommend, and in fact, I already have.”

David
Trusted, Certified, Local
- MCS Certified for heat pumps, solar, and battery installations
- Heat Geek Approved Installer
- RECC Member – we follow the consumer code
- TrustMark Registered – government endorsed
- NICEICApproved – electrical work done right
- Fully compliant with Part L, SAP, and Building Control
- Based in Cornwall – we are local, not just covering the area
Our work is rooted in Cornwall, and we are proud to bring genuine technical rigour to a region that too often sees rushed or sales-led installs.
FAQs – For Self-Builders Who Want It Done Properly First Time
I’ve already started building - is it too late to plan my renewables?

Do I need a battery if I’m getting solar?

Can you work with my existing builder or designer?

Do you offer maintenance or aftercare?
Let’s Design a Home You Can Be Proud Of

This isn’t just about saving money or ticking a sustainability box. It’s about building a home that feels right - for your family, your future, and the world around you.

If you are planning a low-carbon home in Cornwall and want energy systems that truly support your goals, we would love to talk.

Let’s make your green self-build something you will enjoy living in - and showing off.

Services

We take full responsibility for the performance of your system - from the first design to the final fix. No outsourcing. No shortcuts. Just beautifully engineered renewables that do exactly what you need them to. Expertly engineered and installed for lasting reliability, high efficiency and technical precision - right down to the smallest detail.

Heat Pumps

Expertly engineered heat pumps for comfort, efficiency and low-carbon living

Solar PV

Tailored solar systems for ecofriendly solutions, lower bills and energy independence

Home Battery Storage

Smart home batteries to store surplus solar power, maximise on savings and enjoy reliable back up during outages

EV Chargers

Reliable EV Charging to maximise off-peak charging at home, integrated seamlessly with your renewable systems

MVHR Ventilation

Improving fresh air quality and removing waste - mechanical ventilation that works beautifully

Underfloor Heating

Invisible warmth beneath your feet, designed for enhanced comfort, even heat distribution and efficiency

Energy Diversion

Maximise your solar — divert excess energy, reduce grid reliance

Servicing & Maintenance

Expert care for reliable renewable systems and long-term optimal performance

Gas & Electrical Works

Certified Gas Safe and NICEIC electrical engineers, offering support and compliant renewables

Proudly Local, Widely Trusted, Fully Certified

We are proud to hold industry-recognised accreditations - not just for show, but because they mean something for you. We are part of the Cornish community and take pride in being the engineers that local homeowners recommend. From our qualifications to the products we use, everything is chosen for performance, longevity, and peace of mind.

MCS Certified Installer - The industry benchmark for renewable installations
Heat Geek Verified - High-performance system design & installation
RECC Member- High consumer protection standards
NICEIC Registered Electrician - Certified safe electrical installation & maintenance
Gas Safe Register - Licensed and legally permitted to undertake gas work (942985)

SolarEdge-Certified Installer - Expert installation of premium solar technology
Vaillant Renewable Partner - Expert product knowledge & technical heating advice
OZEV Approved EV Chargepoint Installer - Access to government grant schemes
Building Compliance - Fully Compliant with Part P & Building Control Regulations
Based in Cornwall - We are truly local (Bude) and not just covering the area

Really pleased with the install, carried out by professional knowledgeable engineers. High standard of work and took the time to communicate with us, highly recommend them.

Richard Charman

We have worked with the team at Green R Renewables on multiple projects now and their work is always impeccable. There is a genuine care behind the installation with the customers priorities always at the forefront. We always recommend their services to our customers and will continue to do so!

Bowden Architecture

Cai and Richard, at GreenR Renewables are amazing! I had a heat pump and solar panels installed with an EDDI. They talked through everything, so that even I could understand the technology and its everyday usage. The savings I'm making through the solar installation is great and how they set it up for the solar to help with the running of the heat...

Nicky B

Just had an air source heat pump and hot water cylinder fitted by GreenR Renewables. The team have been great from start to finish. We sought out GreenR due to their heat geek certification after having several quotes from companies who didn't really seem to be clued up on fitting heat pumps. Having a fair amount of knowledge of ASHP ourselves, G...

Jamie Robinson

Installation of solar panels plus battery. The team provided great advice prior to us making a decision. Installation went very smoothly with suitable scaffolding in place (which also allowed inspection of the finished work). Post installation is also very good & responsive. We are very happy with the new system.

Kevin Brown

Cai and Richard have recently installed an air source heat pump for us - their service was second to none! We can’t recommend them highly enough. They dealt with the grant application for us and have been an absolute pleasure to deal with. They really know their stuff!

Mandy Ellicott

I recently had the pleasure of working with GreenR and was thoroughly impressed by their professionalism and extensive knowledge in the renewables sector. They provided fantastic service at competitive prices, making the entire process seamless and efficient. I will definitely be working with them again in the future.

Luke Cowling

Super happy with my Vaillant Heat Pump install. The unit is incredibly quiet and you can hardly tell it’s running and it’s also turning out to be super efficient.. I doubt there’s anyone else around who knows as much as these guys and you can be rest assured it’ll be designed correctly unlike others I’ve seen. They also made the Governmen...

Julian Teague

We engaged with Richard and Cai recently to fit our solar system on my new build property. I was impressed from the start with the communication and great advice on different systems available and the benefits to each. Once we had chosen an option they were quick to have the package available and ready to fit, working around us on site as to when w...

Ben Teague

The guys from GreenR Renewables did a fantastic job fitting our solar panels. They were quick, efficient and professional. Richard's expertise and advice really helped us decide on the right system to install. Highly recommended!

Peter New

GreenR Renewables did an outstanding job increasing our battery storage capacity with the Pylontech US5000 4.8kW system. The team of engineers was punctual, efficient, and went above and beyond to ensure the installation was completed smoothly. Their attention to detail and dedication to customer satisfaction was truly commendable. Their commitmen...

Bob Willingham

Richard and team fitted a 4.8kw solar system for me recently. I'm very happy with the quality of the kit supplied and the guy's did a brilliant job. Can't fault anything at all! They even took all the boxes and rubbish away! Never had an electrician do that before. FIVE STAR service 👌 Would highly recommend.

Chris Kendall

Self-Builders

Made for Self-Builds