Setting the scene for 2026 and beyond
Energy efficiency upgrades are moving from “nice to have” to “must do” for many UK households. Bills remain a major pressure, and Government support is reshaping what customers expect at the point of sale: help with the upfront cost, a clear view of savings, and fair, transparent finance.
For UK businesses that sell or arrange installations (solar panels, batteries, insulation, boilers, heat pumps), offering customer finance can be the difference between a quote and a conversion. It can also be a way to support customers responsibly, especially where a monthly repayment is designed to be manageable against likely bill reductions.
Key schemes and deadlines matter here. ECO4 can fund free upgrades for eligible low-income households and is due to end on 31 December 2026. The Great British Insulation Scheme (GBIS) is also time-limited, with insulation support expected to close by March 2026. Alongside this, the Warm Homes Plan and related partnerships are pushing towards 0% or low-interest loans for a much wider group of households, and the Boiler Upgrade Scheme supports heat pumps with grants (often quoted at £7,500) running to 2028.
The most customer-friendly finance offer is one that explains costs, eligibility, and risks in plain English, before the customer commits.
Who this guide is designed to help
This is for UK businesses that want to offer finance to customers for home energy improvements - typically installers, home improvement firms, local trade businesses scaling up, landlords and letting businesses arranging works, and retailers bundling installation with products. It’s also relevant if you are a broker, introducer, or comparison-led business building a regulated pathway.
It assumes you want to do this properly: clear customer outcomes, realistic affordability checks, and compliance with UK financial promotion rules where credit is involved. If your typical customer includes low-income households or people on benefits, understanding grant eligibility and deadlines is especially important, because the “right” option may be free grant-funded work rather than a loan.
What it means to “offer finance” for upgrades
“Offering finance” can mean several different things, and the right model depends on what you sell, who your customers are, and what permissions you (or your partners) hold. In practice, it usually falls into one of these routes: grant-led support, third-party lender finance, or a blended approach where grants reduce the price and finance covers the remainder.
On the grant side, ECO4 can cover measures like insulation, heating improvements (including heat pumps), and renewables for eligible low-income households in homes with EPC ratings typically D to G. This matters commercially because it changes the sales conversation: the customer may not need finance at all, but they do need a trusted guide through eligibility, evidence, installer routes, and timelines. With ECO4 currently expected to end on 31 December 2026, the window is real.
For mainstream households, the policy direction is towards accessible, Government-backed lending. The Warm Homes Plan is positioned as a large national upgrade push (often cited at £15bn and up to 5 million homes by 2030), with a mix of free upgrades for low-income households and 0% or low-interest loans for others. Some delivery elements are phased, including industry partnerships and new funding routes.
The customer’s question is simple: “How much will it cost me each month, and can I trust the numbers?” Your job is to answer that honestly.
How to build a finance offer customers can trust
Start by designing the customer journey around eligibility and outcomes, not around credit. A reliable, conversion-friendly process is usually:
- Screen for grants first - check for ECO4 eligibility (benefits, income-related criteria, EPC band), and for insulation measures that may fall under time-limited schemes like GBIS (noting the expected March 2026 closing timeline). If a customer can get work funded, steer them there.
- Quote the upgrade with and without support - show the full price, then show expected grant contribution (where applicable), then show the remaining balance.
- Offer finance only for the remainder - this can be third-party installer finance, a regulated lender product, or (where appropriate) a 0% loan route aligned to Government-backed initiatives as they come to market.
- Make savings assumptions cautious and transparent - highlight that savings vary by property, usage, tariff, and system performance. If you reference export income, explain the Smart Export Guarantee (SEG) at a high level and avoid promising returns.
- Treat vulnerability carefully - where a household is low-income or fuel poor, ensure you are not nudging them into borrowing if a free or cheaper route is available.
A practical way to present information is a simple comparison table in your quote or online journey: total installed cost, grant amount, customer contribution, example monthly repayment, term, and key risks. This is also where you keep financial promotions compliant: no “guaranteed savings”, no hidden fees, and clear representative examples where required.
Finance works best when it feels like budgeting support, not persuasion.
Why the timing and policy mix creates demand
Demand is being driven by three forces at once: tighter household budgets, a shift in Government policy towards mass upgrades, and hard scheme deadlines that pull activity forward.
First, customers are actively looking for ways to cut bills without paying everything upfront. Solar, batteries, insulation, and low-carbon heating can reduce energy costs, but upfront prices are a barrier. That is exactly where monthly instalments can help, provided affordability is checked and the customer understands the trade-offs.
Second, the Warm Homes Plan is framed around tiered support that fits different incomes. Its commonly described pillars include: free upgrades for low-income households (with a significant multi-year budget), 0% loans (or very low-cost finance) for broader households, and minimum efficiency standards for renters by 2030 in England and Wales. That combination expands your addressable market: homeowners, landlords, and retrofit-minded customers who would previously delay.
Third, deadlines create urgency. ECO4 ending 31 December 2026 and GBIS expected to close March 2026 mean customers who might qualify for free or subsidised measures need to act earlier, not later. Meanwhile, the Boiler Upgrade Scheme running to 2028 supports heat pumps (often cited at £7,500), and can be positioned alongside solar and insulation plans.
For businesses, this is an opportunity - but only if your finance journey is transparent, accurate, and compliant, because this is a financial decision that can affect a household for years.
Pros and cons of offering customer finance
| Pros | Cons | What to do about it |
|---|---|---|
| Higher conversion on larger-ticket upgrades | Regulatory risk if you are marketing credit incorrectly | Use approved lender materials, keep claims factual, and get compliance review where needed |
| Makes upgrades feel affordable through monthly budgeting | Customer harm risk if repayments are not affordable | Build in affordability checks and clear signposting to grants first |
| Helps customers act before ECO4 and GBIS deadlines | Scheme complexity can confuse customers | Use a simple eligibility screener and plain-English explanations |
| Enables bundling of measures (solar + battery + insulation) | Savings are variable and can be overstated | Use cautious assumptions and explain what can change |
| Supports landlords preparing for 2030 rental standards | Longer sales cycle with more decision-makers | Provide landlord-focused packs: compliance benefits, cashflow, tenant impact |
| Improves cashflow predictability when funded by third-party lenders | Complaints risk if expectations are mis-set | Document advice boundaries, keep records of quotes and assumptions |
Things to look out for before you launch
The biggest pitfalls are usually not technical, they’re trust-related. Be very careful with language that could be interpreted as financial advice or as a promise of outcomes. If you say “repayments are covered by savings”, you must qualify it clearly: savings depend on the property, energy prices, export rates, and behaviour. It’s safer to say something like “repayments may be partly offset by bill savings for some households” and show a range.
Also watch scheme timelines. ECO4 is currently expected to end 31 December 2026, while GBIS insulation support is time-limited and is often discussed as closing March 2026. If you market “free upgrades”, ensure the customer meets eligibility criteria and that your delivery route is legitimate. Misrepresenting grant eligibility is a fast route to complaints and reputational harm.
If you work with third-party finance providers, check what you are allowed to say and do. Many businesses operate as introducers, passing details to a regulated lender. In that case, make it clear who is providing the credit, what checks will happen, and that approval is not guaranteed.
Finally, treat vulnerable customers with extra care. If someone may qualify for a fully funded package (for example under ECO4 or low-income elements of the Warm Homes Plan), your process should surface that first. Ethical handling is not just good practice, it is a long-term SEO advantage because it earns trust signals and reduces negative reviews.
If a customer could get help without borrowing, make sure they know that before they apply for credit.
Alternatives to offering finance directly
- Grant-first retrofit pathway - build a service that checks ECO4 and insulation grant eligibility, then delivers funded measures via approved routes.
- Part-funded “top-up” options - use grants to reduce the cost and offer finance only for the remainder (useful for mid-income households).
- Pay-as-you-go project phasing - split works into stages (insulation first, then heating, then solar) to reduce immediate spend.
- Landlord capex planning - support landlords with multi-property scheduling and budgeting ahead of 2030 efficiency standards.
- Referral to regulated lenders - act only as an introducer and let the lender handle approvals, disclosures, and servicing.
- Energy tariff and export optimisation - for solar customers, focus on tariff choice and SEG export options alongside installation, without bundling credit yourself.
FAQs
It depends on what you do. If you are only introducing customers to a regulated lender, you may be able to operate under a simpler introducer model, but the rules are specific. Always confirm your regulatory position and use compliant, approved wording.
Can customers still get free upgrades in 2026?
Some customers can. ECO4 can fund free measures for eligible low-income households, often where the home has an EPC rating in the D to G range, and it is currently expected to end on 31 December 2026. Eligibility and funding routes matter.
What is GBIS and why does it matter?
GBIS refers to the Great British Insulation Scheme. It supports insulation measures and is time-limited, with closure often referenced around March 2026. If a customer is eligible, it can reduce the need to borrow.
How does the Warm Homes Plan affect my finance offer?
It signals a shift towards mass upgrades with tiered support: free upgrades for low-income households, 0% or low-interest loans for others, and stronger rental efficiency standards by 2030. That increases customer demand for clear, trustworthy financing pathways.
Are heat pump grants really £7,500?
The Boiler Upgrade Scheme is commonly referenced as offering grants of up to £7,500 for heat pumps in England and Wales, and it is expected to run to 2028. Grant levels and eligibility can change, so always check current rules.
Can I say solar “pays for itself” with savings?
Be cautious. Solar can reduce bills, and export payments may apply under SEG, but outcomes vary. It’s safer to present realistic scenarios, explain assumptions, and avoid guaranteed claims.
What should I show in a customer quote?
At minimum: total installed cost, any grant assumptions, customer contribution, APR (if applicable), term length, fees, representative repayment example, and clear statements about what is and isn’t guaranteed.
How Switcha can help
Switcha is a UK price comparison website. We help businesses and customers make sense of complex energy and home upgrade choices by comparing options clearly, highlighting key eligibility factors, and signposting where grants, loans, or installer finance may be relevant. If you’re building a customer finance journey, we can support your content strategy with plain-English explanations that reflect real UK scheme deadlines like ECO4 and GBIS, and we can help customers compare related running costs and savings drivers so expectations stay realistic.
Disclaimer
This guide is for general information only and does not provide financial, legal, or regulatory advice. Eligibility criteria, scheme deadlines, grant values, and loan terms can change, and availability may vary by location and household circumstances. If you plan to promote, arrange, or introduce credit, you should confirm your regulatory obligations and use lender-approved materials where required. Always encourage customers to review the full terms and consider affordability before committing.
