Policy is the quiet hand on every UK installer’s order book. It rarely makes the headlines the way a big utility-scale project does, but the rules on VAT, export payments, building regulations and planning shape demand more directly than any advertising campaign. Going into the second half of 2026, four policy strands matter most to the trade: the 0% VAT window, the Smart Export Guarantee, the Future Homes Standard, and the Clean Power 2030 target that sits behind all of them. Here is what each one means for the businesses actually fitting the panels.
0% VAT: a deadline worth marketing around
The single most commercially significant policy in force is the zero-rating of VAT on residential solar and battery storage. Since 2022, supply-and-install of solar panels and — crucially — standalone battery storage for domestic customers has been VAT-free across Great Britain. That relief is currently scheduled to run until 31 March 2027, after which VAT is set to return to 5%.
For installers, this is not just an accounting detail — it is a genuine reason for customers to act now, and one worth building into quotes and seasonal campaigns. On a typical £7,000 domestic system the relief is worth several hundred pounds; on a battery retrofit it can be the difference that closes a sale. As the 2027 deadline approaches, expect a demand pull-forward, and price your capacity accordingly. Installers who explain the deadline honestly — rather than using it as a false-urgency gimmick — tend to convert better, because customers can verify it. Regional firms such as ecoaim in central Scotland and FLD Electrical in South Wales have leaned on the VAT window as a straightforward, factual closing point rather than a hard sell.
The Smart Export Guarantee: still fragmented, still important
The Smart Export Guarantee (SEG) replaced the Feed-in Tariff for new installations and obliges larger electricity suppliers to pay households for the solar they export. The catch — and it is a persistent one — is that the SEG sets no rate. Each supplier decides its own, and the spread is wide: the most competitive fixed and variable export tariffs sit toward the top of a roughly 12-20p/kWh range, while some suppliers pay only a few pence.
For the trade, two things follow. First, MCS certification of the install is the gateway to SEG eligibility, so an un-certified job locks the customer out of export income entirely — a powerful argument for using a certified installer that is worth making explicitly. Second, the best export tariffs increasingly reward flexibility: time-of-use export, or pairing a battery with a smart tariff to shift export into high-price windows. That shifts the conversation from panels alone toward storage and controls, where installer margins are healthier. The consumer-facing detail on how export income affects a household’s return is covered well by our sister site The Cost of Solar, which installers can point customers to rather than re-explaining the maths on every doorstep.
The Future Homes Standard: solar as standard on new builds
If the VAT window is the near-term demand driver, the Future Homes Standard (FHS) is the structural one. The FHS tightens the carbon requirements for new dwellings in England to the point where rooftop solar becomes the most cost-effective route to compliance for the vast majority of developments. In effect, it is turning solar from an optional new-build upgrade into a default specification.
This matters enormously for the shape of the market. New-build installations already accounted for around 35% of all 2025 installs, up from 32% when MCS began tracking the split — and the FHS pushes that share higher. For installers, new-build work is a different business from retrofit: it runs through developer frameworks and volume contracts rather than individual homeowner sales, with tighter margins but far more predictable pipeline. Specialists positioning around this — and the new-build solar niche specifically — are building relationships with regional developers now, ahead of the demand. It is a genuinely different route to market from the doorstep retrofit trade, and one worth a deliberate strategy rather than treating new-build enquiries as ad-hoc.
The same regulatory logic is spilling into the commercial and public sectors, where net-zero commitments and rising energy costs are driving specification of solar on schools, warehouses and commercial property. Installers who can move between domestic retrofit and light-commercial work capture more of this, and the property-type framing is how much of that demand is now searched for and won.
Clean Power 2030: the target behind the policy
Underpinning all of this is the Government’s Clean Power 2030 ambition — a commitment to a very largely decarbonised power system by 2030, with solar expected to roughly treble from its mid-decade base. The Clean Power Action Plan sets out the deployment trajectory, and while utility-scale and ground-mount projects do much of the heavy lifting on gigawatts, rooftop solar is an explicit part of the mix and benefits from the same policy tailwind: grid connection reform, planning simplification, and continued fiscal support.
For the trade, Clean Power 2030 is less a set of rules to comply with than a signal of durable demand. It tells installers, investors and lenders that the direction of travel is fixed for the rest of the decade — which is exactly the certainty needed to justify hiring, training and capacity investment. The certified-contractor base has already grown past 5,250, and the policy backdrop is the reason that expansion is rational rather than speculative.
Planning and permitted development
One under-appreciated policy area is planning. Most domestic rooftop solar in England is covered by permitted development rights and needs no planning application, which keeps retrofit friction low. Recent and proposed extensions to permitted development — including for larger domestic arrays and some commercial rooftops — are quietly widening what can be installed without a full application, shortening lead times. Conservation areas, listed buildings and some flat-roof commercial installations remain the main exceptions where a planning check is still essential, and getting that wrong is a classic avoidable delay. For commercial and ground-mount work the picture is more involved, and financing structures such as those explained at commercial solar finance and business-grant routes at solar grants for business increasingly assume the planning position is understood upfront.
What the policy mix means for installers
Put the strands together and the 2026 message for the trade is consistent: demand is policy-supported and structurally rising, but the value is migrating. The straightforward panel-only domestic install is becoming a commodity; the margin and the durable customer relationships are in storage, in flexibility and export optimisation, in new-build and commercial framework work, and in being the certified, trusted local name that customers can verify. Firms such as AMP Pro Electrical and Greenlinc Renewables that combine MCS-certified installation with a clear local reputation are best placed to convert the policy tailwind into booked work.
The practical takeaway: use the 0% VAT deadline as a real, factual reason for customers to move before April 2027; make MCS certification and SEG eligibility an explicit selling point; and decide deliberately whether new-build and commercial framework work is a route you want to build toward as the Future Homes Standard reshapes where the volume sits. Policy will keep the demand coming — the competitive question is which installers are structured to capture it.