Solar, batteries & heat pumps · South Wales
Make your
property
work harder.
Renewable energy that delivers long-term returns. We help homeowners and landlords across South Wales cut running costs and improve their EPC rating — with up to £9,000 of grant funding deducted from your quote.
Why Alpha Energy Group
Energy is no longer just a utility. It’s an asset.
Most people treat electricity and heating as unavoidable expenses. Our clients treat them as a strategic investment — in a property that costs less to run and is worth more over time. “Alpha” is the investment world’s term for returns above the market average; our job is to help you earn your own energy alpha.
- Reduce your monthly outgoings
- Protect against rising energy prices
- Reduce your reliance on the grid
- Improve your EPC rating
- Generate long-term returns
- Future-proof against changing regulations
- Lower your carbon emissions
TrustMark registered installerSimple from start to finish
Three steps to a warmer, cheaper home
No jargon and no pressure — just a clear path from enquiry to a home that costs less to run.
Free home survey
We assess your home and confirm exactly which grants you qualify for. No cost, no obligation.
Fixed quote, grant deducted
A clear, fixed price with your grant and 0% VAT already taken off — what you see is what you pay.
Grant deducted up frontWe install & handle the paperwork
Our MCS-certified team fits everything and manages the Ofgem grant claim on your behalf.
An investment, not an expense
A properly designed solar PV system generates electricity for more than 25 years — cutting what you buy from the grid and shielding you from future price rises. Despite the reputation, Wales has strong year-round generating potential.
Heating designed for the future
Modern heat pumps draw warmth from the outside air and turn it into efficient heating and hot water — typically around three times more efficient than a fossil-fuel boiler, and in many homes they work with your existing radiators.
Return on investment
What return could your property deliver?
Unlike most investments, renewable technology pays you back in a form you can see every month — while quietly improving the asset underneath it.
Lower bills from day one
Every unit you generate is a unit you don’t buy. The saving starts the day the system is commissioned and grows each time grid prices rise.
Value that compounds for decades
Panels are warrantied for 25 years and heat pumps are built for the regulations coming, not the ones going. A more efficient property costs less to run, year after year.
A typical 4.5 kWp system in South Wales
This is an illustration, not a quotation — your own figures will differ. We calculate a property-specific estimate to the MCS standard before you commit to anything.
- System size
- 4.5 kWp
- About 12 panels
- Installed cost
- £7,400
- Wales average, 2025/26
- Annual generation
- 4,350 kWh
- South-facing, 35° pitch
What you get back depends heavily on your export rate — and the best rates come with a condition the industry tends not to mention:
Most export tariffs open to everyone pay between 1p and 6p. This is the realistic case if you don’t want to change energy supplier.
Octopus, British Gas, OVO, EDF, E.ON Next and ScottishPower all pay more for your exports if you also buy your electricity from them. Worth comparing against their import prices before you switch.
How we worked this out — every assumption and source
- System size: 4.5 kWp, the average domestic system stated by Energy Saving Trust (21 July 2026).
- Installed cost: £7,400, from a mean of £1,640.75 per kW for 4–10 kW installations in Wales — DESNZ Solar PV cost data (28 May 2026), drawn from 22,532 Welsh installations in the MCS database. Wales was the cheapest region in Great Britain that year.
- Generation: modelled at Carmarthen, south-facing at 35° with no shading, using the European Commission's PVGIS tool (v5.2, SARAH2) with 20% system losses. East- or west-facing roofs generate roughly 15–20% less.
- Self-consumption: 22%, calculated per MCS MGD 003 Issue 2.0 (1 April 2022) using the prescribed default occupancy pattern and 3,500 kWh annual household use. That leaves 78% exported. A home occupied all day would be nearer 28%; empty all day, nearer 15%.
- Electricity price: 26.33p per kWh including VAT — the Ofgem price cap for South Wales, Direct Debit, 1 July to 30 September 2026. The cap changes quarterly.
- Export rates: verified on suppliers' own tariff pages on 7 August 2026. Rates open to any customer ranged from 1p to 6p; the 12–15p rates all require you to buy your import electricity from that same supplier. Ofgem sets no minimum export rate, and rates have been falling — Octopus cut its export rate from 15p to 12p in March 2026.
- Higher rates of 15p–25p exist but are only offered where that supplier carried out the installation. As an independent installer we cannot get you those, and we’d rather say so than quote a number you can’t have.
- These are first-year figures. Over time panel output declines by roughly 0.5% a year, and an inverter typically needs replacing around year 12 — but electricity prices have historically risen, which works the other way.
- Excluded: energy price inflation, finance costs, scaffolding or roof repairs, and any extra benefit from an EV, heat pump, immersion diverter or battery — all of which would raise self-consumption and improve the return.
Figures correct as at 7 August 2026 · review 1 October 2026
Government grants
Up to £9,000 towards your heat pump
The Boiler Upgrade Scheme helps homeowners move away from fossil-fuel heating. We deduct the grant from your quote and handle the Ofgem claim for you — plus 0% VAT on qualifying energy-saving upgrades until March 2027.
Boiler Upgrade Scheme
Replace a fossil-fuel boiler with an air source or ground source heat pump. We deduct the grant from your quote and handle the Ofgem claim for you.
Check eligibility →
Oil & LPG homes
If your home is off the gas grid and currently heated by oil or LPG, the grant rises to £9,000. Available until 31 March 2027.
Check eligibility →What you’ll actually pay
The grant is a contribution towards the installation, not the full cost — in most cases you’ll still pay a share. What that comes to depends on your property:
- Property size
- Your existing heating system
- Radiator upgrades
- Hot water cylinder
- Pipework alterations
- Electrical work
Every quote we send shows the grant and your contribution separately, so you can see exactly where the money goes.
Schemes change — we assess every household individually and only recommend what you genuinely qualify for. Check your eligibility →
Recent installs
Our work across South Wales
Solar PV
Heat pump install
Solar & battery
Internal wall insulation
Solar PV
Heat pump cylinderInsulation
Improve performance. Maximise your investment.
A heat pump performs at its best in a well-insulated home, so where it helps we'll recommend insulation before or alongside your installation — improving efficiency, cutting running costs and lifting your EPC. Insulation isn't covered by the Boiler Upgrade Scheme, so we quote it separately and clearly.
Loft insulation
Stop a quarter of your heat escaping the roof.
Cavity wall insulation
Water-resistant, rot-proof bead insulation.
Internal wall insulation
Slow heat loss from inside solid-walled homes.
Rated by homeowners
Trusted across South Wales
"Our new air source heat pump is amazing, and the grant made it completely free. The team kept us informed at every step."
"Solar panels were a game changer for us — wish we'd done it sooner. The bills speak for themselves."
"The grant process was quick and easy, and now my home is so much warmer. Genuinely couldn't fault them."
See if you qualify — free.
Answer a few quick questions and we'll tell you exactly what grants and upgrades are available for your home. It takes about two minutes.