Solar panels for housing associations, FAQs

A typical individual social home takes a 1.5-4 kW system (4-10 panels) costing roughly £3,500-£7,500 fully installed, depending on archetype and access. Delivered at programme scale across a batch of streets, cost-per-home falls because of shared mobilisation, scaffolding and standardised design. Communal/block arrays on landlord supplies are priced per block (£10,000-£135,000). Each archetype is best priced individually from a representative survey.

It's the government's flagship grant for decarbonising social homes in England, the successor to the Social Housing Decarbonisation Fund (SHDF). Wave 3 was allocated £1.29bn in the Autumn Budget 2024, to be delivered from 2025 until 2028, for existing social housing below EPC band C in England. Its application window closed on 25 November 2024 and the list of successful landlords was published on 11 March 2025, so it is not taking new applications. For the landlords on that list, delivery runs to September 2028 and all grant must be spent by 31 March 2028. The Greater Manchester and West Midlands combined authorities and their constituent councils were not eligible for the national Wave 3, as they received devolved allocations.

Yes, when designed for tenant self-consumption. Dwelling-level systems are usually sized to the resident's daytime load so they use the generation directly, which is where the electricity bill saving comes from. The benefit model should be agreed up front: tenants self-consume, and the surplus is exported under the Smart Export Guarantee (taken by the landlord or a split-benefit tariff partner). Tenant benefit is the explicit purpose of the Warm Homes funding.

PAS 2035:2023 is the British Standard governing whole-house retrofit of existing dwellings, it requires a retrofit assessment, a retrofit coordinator owning a medium-term improvement plan, and a fabric-first, moisture-aware approach. Any grant-funded social-housing retrofit (Warm Homes Fund, ECO4, etc.) must comply, and solar is delivered inside that process. Installers must also be TrustMark-registered and MCS-certified. PAS 2035:2023 came into full effect on 30 March 2025.

Under the confirmed 2030 EPC C target, social rented homes in England must reach EPC C or higher on reformed EPCs, against any one metric, by 1 April 2030. The government confirmed the target in January 2026 (response published 1 April 2026), with a second metric to meet by 1 April 2039 and enforcement by the Regulator of Social Housing under the revised Decent Homes Standard. Rooftop PV improves a dwelling's SAP score and is often the most cost-effective single measure for moving a home from EPC D to C, especially homes that fabric measures leave just short of band C. There's a £10,000 per-property spend exemption per metric for a home that still can't reach C after that spend, so prioritising the cheapest EPC-C tips (often solar) matters.

It's a design decision, agreed before installation. The most tenant-friendly model lets residents self-consume the generation (the bill saving) while the landlord registers the array for SEG and takes only the surplus export income, which can subsidise the wider programme. Split-benefit tariffs such as Octopus Tenant Power share the benefit between landlord and tenant. Whichever model is chosen, it should be set out clearly so residents understand exactly what they get.

Archetype-led, batch delivery. A programme surveys a representative sample of each house type, settles on a standard PAS 2035-compliant solution per archetype, then installs street-by-street in batches with one mobilisation per area. Standardised scaffolding, access and designs drive cost-per-home down and make a multi-thousand-home programme deliverable ahead of the confirmed 2030 EPC C target.

Yes, and the easiest win is the communal/landlord supply (lifts, lighting, pumps, corridor heating), which can self-consume most of the generation. A block roof serves many homes, so cost-per-home is efficient. Blocks of 18 m or seven storeys and above are higher-risk buildings under the Building Safety Act 2022, so any roof work on them engages that regime; the fire-safety design should be checked against BS 9991 (fire safety in residential buildings) and backed by a structural survey.

Through an established framework rather than direct award. Social-housing decarbonisation frameworks, such as Fusion21's decarbonisation framework, Procurement for Housing's Decarbonisation & Retrofit framework, and equivalents, each give a landlord a compliant call-off under the Procurement Act 2023, pre-vetted PAS 2035/2038 delivery, and audited pricing. That brings speed and compliance without a standalone tender.

The £13.2bn Warm Homes Plan, re-committed at the June 2025 Spending Review across 2025-26 to 2029-30, is the overarching programme. ECO4 runs to 31 December 2026 and can fund insulation or first-time heating in social homes at EPC E to G, paid for through the energy-supplier obligation. On new build and regeneration, the Social and Affordable Homes Programme 2026 to 2036 (£39bn over ten years; Homes England outside London, the Greater London Authority in London) funds new social homes, where solar can be designed in. SEG provides ongoing export income: tariffs vary by supplier, and the better fixed rates open to anyone are around 12 to 13p per kWh (October 2026, indicative). Installing solar PV in social homes also carries 0% VAT in Great Britain until 31 March 2027, then 5% from 1 April 2027. A landlord's programme usually blends these into a single funding stack.

Disruption is minimal. A dwelling-level install is typically 1-2 days, with the only outage being a short final connection. Resident communication, consent and access scheduling are part of the programme and one of the biggest delivery risks at scale, so they need careful planning, with extra care for vulnerable residents in sheltered and supported schemes.

Solar itself is a roof-and-electrical measure, not a fabric intervention, so it carries low moisture risk. But on a grant-funded retrofit it sits inside the PAS 2035 whole-house process, which considers ventilation and moisture as a system, important where solar accompanies insulation. Awaab's Law, which has applied to social landlords in England since 27 October 2025 for damp and mould and emergency hazards, makes a fabric-first, moisture-aware retrofit approach essential, and that is the approach the PAS 2035 process is designed around.

Yes, and it should. Fabric-first is the rule: insulate and ventilate, then electrify heat with an air-source heat pump, then add solar PV to offset the heat pump's running cost and the home's baseload. Solar is what makes an electrified, heat-pump-heated social home genuinely affordable to run for the tenant. Model the whole-house package, not solar in isolation.

Most pitched tile/slate roofs and flat roofs on social stock accept PV with the right fixing system. The constraints are roof condition, orientation/shading, and asbestos in pre-2000 buildings (which must be managed under CAR 2012, often a re-roof first). Archetype surveys should flag roof condition early so re-roofing or alternative measures are planned in, not discovered mid-programme.

It depends on scale, but a typical multi-thousand-home programme runs 18-48 months, phased by archetype and area, aligned to grant-defrayal deadlines and the confirmed 2030 EPC C target. Surveying and design happen up front; physical install runs in continuous batches. Sequence the work to spend grant on time and prioritise the homes where solar delivers the cheapest EPC-C uplift first.