Greentek Energy Ltd engineer fitting solar panels to a 1930s semi in Solihull
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Building Construction and Renewable Energy Installers in Solihull and Birmingham

This is where we are based. Our office is in Solihull, B37, minutes from junction 6 of the M42, and most of our work happens within half an hour of it. We do three things here with our own staff: building construction, solar and heat pumps. Extensions and renovations across both boroughs, MCS certified solar PV, and air source heat pumps sized from a heat loss calculation, with insulation alongside all three. One project manager, from the first survey to the final certificate.

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Building, Solar, Heat Pumps and Insulation Across Both Boroughs

Every service below is delivered by our own in-house team rather than subcontracted out. Building work runs through one project manager with planning and Building Control handled by us, solar and heat pump installations are MCS certified, and insulation is specified after a survey rather than off a price list.

Areas We Cover Across Birmingham and Solihull

From the office in B37 the whole conurbation is inside half an hour. That covers Birmingham from the city centre out through Edgbaston, Harborne, Moseley, Kings Heath and Selly Oak to Northfield, Erdington, Great Barr and Sutton Coldfield, and the Solihull borough from Shirley and Olton through Knowle, Dorridge and Balsall Common. Being this close is why a mid-project site visit here happens the same day.

SolihullShirleyOltonKnowleDorridgeMonkspathDickens HeathHockley HeathBalsall CommonHampton-in-ArdenMeridenMarston GreenChelmsley WoodCastle BromwichSheldonYardleyAcocks GreenHall GreenMoseleyKings HeathEdgbastonHarborneSelly OakBournvilleNorthfieldQuintonErdingtonSutton ColdfieldGreat BarrWater OrtonColeshill

Our Office Is in Solihull, B37

Most companies that say they cover Birmingham are driving in from somewhere else. We are not. The registered office is in B37, a few minutes from junction 6 of the M42 and from Birmingham Airport, and it is an office we work out of rather than an address on a letterhead. That is the difference between a survey booked for next month and one booked for this week.

It also changes what happens during a job rather than before it. When something needs looking at halfway through a build, someone can be on site the same day instead of the following week. The same applies to the work we do for landlords and managing agents, where a void week costs real money, and to commercial sites on planned maintenance contracts where a missed visit is the whole problem.

Two Councils, Two Rulebooks

Birmingham City Council and Solihull Metropolitan Borough Council are separate planning authorities, which catches people out more than anything else in this area. Two near-identical 1930s semis a mile apart, one in Hall Green and one in Olton, can get different answers to the same application. Add the conservation areas on both sides, Moseley, Edgbaston, the Jewellery Quarter, Knowle, Olton and Dorridge among them, plus the Bournville Village Trust covenants that sit outside the planning system altogether, and the rules change street by street.

We check which authority and which designation applies to your address before anything is drawn. The application itself, the Building Control sign-off, the party wall notices where a neighbour is affected and the structural calculations are all handled by us, whether the job is a single storey extension, a loft conversion or a full home renovation.

A Housing Mix That Spans a Century

Very little links the housing here apart from the postcode. Moseley, Balsall Heath and Sparkhill are Victorian and Edwardian terraces with solid nine-inch walls and no cavity. Hall Green, Acocks Green, Kings Heath, Shirley and Olton are mile after mile of 1930s semis with a narrow cavity nobody ever filled. Chelmsley Wood is post-war system-built. Knowle, Dorridge and Sutton Coldfield run to large detached houses with big uninsulated roof voids, and Dickens Heath and Blythe Valley are new enough to need almost nothing to the fabric at all.

So the right first job is different in each of them. The 1930s semis get most from cavity fill and a proper loft insulation job. The solid wall terraces cannot be injected and need external wall insulation instead. The larger older houses usually lose their heat upward before the walls are worth discussing, and often want a heating system upgrade sized for the house rather than inherited from the last one. One genuinely local note: much of Birmingham’s mains water arrives down the Elan aqueduct from reservoirs in Powys and is soft, so limescale damages cylinders and heat exchangers far less here than in the South East. It does not remove the need for system protection, but it does change the risk.

Access, the Clean Air Zone and Getting Work Done

Birmingham’s Clean Air Zone covers the area inside the A4540 Middleway ring road, and a non-compliant vehicle entering it pays a daily charge. Most residential work across Solihull and the outer suburbs never touches it, but a job in Edgbaston or the Jewellery Quarter does, and that belongs in the quote rather than appearing later. Beyond the zone the constraints are ordinary ones: inner-city terraces with rear entries and no off-street parking, interwar semis sharing a drive with next door, and scaffold and skips that have to be planned before week one.

Generation and heating come last in that planning, not first. If the fabric is already sound, which it often is on the newer estates, solar PV with battery storage or an air source heat pump can go straight in and we will say so. If it is not, we will say that instead. A heat pump fitted to a cold house has to be bigger, costs more to buy, costs more to run and still struggles in February.

Plenty of work needs none of this. A kitchen renovation or a reworked living room is internal, so it comes down to sequencing the trades and protecting the rest of the house while it happens. The same team handles both sides of the business, which is the whole reason the building work and the energy work can be designed around each other instead of fighting.

  • Based in Solihull B37, not covering the area from somewhere else
  • Builders, electricians, heating engineers and insulation fitters all in-house
  • Planning, Building Control and party wall notices handled by us
  • MCS certified for solar PV and air source heat pumps
  • Free survey at the property, never a price quoted down the phone
  • Written workmanship warranty on every completed job

Solihull and Birmingham are where we are based, but they are one of six areas we work in, and the same team, the same certification and the same warranty apply wherever the job is. You can see the full list on our areas we cover page, or read how we work as builders and renewable energy installers across the UK. If you would rather spread the cost of a larger job, the terms are set out on our finance page.

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Projects Completed

Solar, heat pump and storage installs delivered across residential and commercial properties.

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Years Combined Experience

An accredited team with decades of hands-on energy and construction work behind it.

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Industry Accreditations

Independently audited by MCS, TrustMark, Gas Safe and five other industry bodies.

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.

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.

Review from Google

★★★★★

Luki

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.

Review from Google

★★★★★

Ian B.

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!

Review from Google

★★★★★

Omer M.

Omer M.

Home Owner

Quick and efficient service.

Review from Google

★★★★★

Amjid H.

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.

Review from Google

★★★★★

Luki

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.

Review from Google

★★★★★

Ian B.

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!

Review from Google

★★★★★

Omer M.

Omer M.

Home Owner

Quick and efficient service.

Review from Google

★★★★★

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.

STEP 1

Free Survey

Book online or call. A Greentek specialist visits your property to assess your solar, heating, insulation, or renovation needs.

STEP 2

Custom Quote

Get a clear, fixed-price quote with material and brand options, and an honest timeline, no hidden fees.

STEP 3

Expert Installation

Our in-house accredited team carries out the work, solar, heat pump, insulation, or renovation, no subcontractors passing the job around.

STEP 4

Handover & Warranty

We walk you through everything on completion, clean up after ourselves, and hand over your written warranty.

Frequently asked questions

Which areas around Solihull and Birmingham do you cover?+
We cover both boroughs. In Birmingham that is B1 to B48, taking in Edgbaston, Harborne, Moseley, Kings Heath, Selly Oak, Bournville, Northfield, Erdington, Great Barr and Sutton Coldfield. In Solihull it is B90 to B94 plus B26, B36, B37 and B92, from Shirley and Olton out to Knowle and Dorridge.
Where are you actually based?+
Solihull, B37, a few minutes from junction 6 of the M42 and from Birmingham Airport. It is our registered office rather than a mailing address, which is why this is the area where a survey is usually booked within the same week and a mid-job site visit happens the same day.
Do you work for landlords and commercial sites?+
Yes. Landlord work is mostly about lifting an EPC rating before a letting, and we phase it around tenancy changes so voids stay short. Commercial sites and managing agents are covered on planned maintenance contracts, with scheduled visits and a written record after every call.
Does it matter which council my house falls under?+
It can. Birmingham City Council and Solihull Metropolitan Borough Council are separate planning authorities, so two similar houses on either side of the boundary can get different answers on the same application. We check which one applies to your address before anything is designed.
Do you take on extensions and structural work, or only energy jobs?+
Both, and building work is the larger half. Extensions, loft conversions, knock-throughs, kitchens and full refurbishments run through our own team, with the planning application, Building Control, party wall notices and structural calculations handled by us rather than left for you to chase.
Will the Clean Air Zone add to my quote?+
Only if the job sits inside it, and we tell you up front when it does. The zone covers the area within the A4540 Middleway ring road, so most residential work across Solihull and the outer Birmingham suburbs is unaffected. Where it applies, the charge is itemised rather than buried.
Can I spread the cost of work in Solihull or Birmingham?+
Yes. Finance is available on most of our installation and building work, so a larger project can be spread over a term instead of paid in one go. The options, the terms and how to apply are all set out on our finance page.

Free Local Quote

Get a Free Quote in Solihull & Birmingham

Tell us about your solar, heating, insulation or renovation project in Solihull & Birmingham and we'll come back within one business day with a straight answer, a plan and a real quote.

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Fully Accredited & Certified.

  • MCS Certified
  • TrustMark Government Endorsed Quality
  • Gas Safe Register
  • HIES accredited
  • Amtivo certified
  • SWIGA member
  • Qualitymark Protection accredited
  • British Assessment Bureau certified