Ways to pay for solar panels

Paying the full cost up front is the simplest route. You own the system from day one, there is no finance agreement and no interest, and you keep all of the bill savings and any export income.

The catch is the lump sum. A typical install runs into several thousand pounds, so it is not open to everyone, and spending emergency savings is a personal call. Where the cash is available, it is the cleanest option.

Many installers can arrange a credit agreement so you pay over time instead of in one go. This spreads the cost and makes solar reachable without a large lump sum. These agreements are usually unsecured, so you still own the system and keep your export and any grant rights.

The trade-off is that the total paid over the term is higher than paying cash, because of interest and any fees, and the repayments are fixed regardless of how much the panels generate. Installers offering consumer finance work under consumer codes that require clear pre-contract information and affordability checks, so read the agreement carefully before signing.

Some offers work as a subscription, sometimes called solar as a service, rent-a-roof or a power purchase agreement. A third party owns and maintains the panels, and you pay a regular fee or buy the power they generate, rather than owning the system yourself.

The appeal is little or no upfront cost, with maintenance often sitting with the owner. The downside is the bigger story. These deals often run on a long contract, sometimes 20 years or more, which can complicate remortgaging or selling, because a buyer or their lender has to accept the arrangement. You also do not fully control the system, and you may not be the registered generator, which can mean you do not receive the export payments.

For eligible households, a grant can cover a large share or even all of the cost, with no repayment and no interest. These schemes are targeted, mostly at low-income or fuel-poor homes, often with an energy rating of D to G, and they come with regional rules, caps and deadlines.

Most homeowners will not qualify, and schemes change or close over time, so it is worth checking what genuinely exists before counting on one.

This page describes categories and trade-offs only. It is general information, not financial advice, and it does not recommend a way to pay, set out rates, name lenders or assess your eligibility. For a decision that suits your own circumstances, take independent financial advice.