Refinance & Sale-and-Leaseback: Solar Asset Finance

Most solar finance is about funding a new system. Refinance and sale-and-leaseback do the opposite: they release the capital tied up in a system you’ve already paid for, so you can put that money to work elsewhere while the panels keep generating on your roof.

How sale-and-leaseback works

The mechanics are straightforward. You sell your existing, owned solar system to a funder for a lump sum, then lease it straight back. You receive the cash; the funder takes ownership of the asset; you keep using the system exactly as before and continue taking the energy savings. In effect you’ve converted an illiquid asset on your balance sheet back into working capital, while retaining all the operational benefit.

This is increasingly in demand from businesses that bought solar early with cash — often in the 2022–2024 energy-price spike — and now want that capital available for the next phase of investment, whether that’s a second roof, battery storage, EV charging, or something unrelated to energy entirely.

Worked example

A logistics group paid cash for a 380 kW rooftop system two years ago, at around £420,000. They wanted to fund solar on a second warehouse without borrowing fresh capital, so we arranged a sale-and-leaseback: the funder bought the existing system and the business leased it straight back, with the structuring agreed alongside their accountant. Nothing changed operationally — the panels kept generating for the first warehouse throughout, and the released cash part-funded the second site.

The figures below are illustrative and rounded to show how the cash flow stacks up. Your own numbers depend on the system’s age, condition and current market value — model them with our finance calculator.

• Capital released (lump sum to the business): around £420,000, paid on completion of the sale.
• Lease-back term: 6 years (72 months).
• Indicative rental: roughly £7,050 a month — about £84,600 a year — at an illustrative rate.
• Energy the system offsets: around 360,000 kWh a year, largely self-consumed on site — worth in the region of £85,000 a year in avoided grid electricity and export income at current commercial prices.
• Net operating cash flow during the lease: close to break-even. The energy the system generates (about £85,000) broadly covers the annual rental (about £84,600), so the £420,000 is freed at little ongoing net cost before tax.
• Year-one tax effect (25% corporation tax): two moving parts. The rentals are a deductible business expense, so roughly £84,600 of year-one rental cuts the tax bill by about £21,150. But — and this is the part that needs the accountant — because the business claimed capital allowances when it bought the system (solar is special-rate expenditure, usually relieved through the Annual Investment Allowance at 100% up to £1m), selling the asset triggers a balancing charge: broadly, the sale proceeds, capped at the original cost, are added back to taxable profit. If the pool had been fully written down, that could add up to around £105,000 to the year-one corporation-tax bill.

The headline is £420,000 released today at close to break-even ongoing cost; the catch is that one-off balancing charge, which is exactly why we model this route against a straight refinance before committing to either.

The tax needs care

This is the route where structuring matters most. Disposing of an asset you’ve claimed capital allowances on can trigger a balancing charge — broadly, a clawback of relief if the sale proceeds exceed the asset’s tax written-down value. Anti-avoidance rules around sale-and-leaseback transactions can also apply. None of this makes the route a bad idea; it simply means it has to be done properly, with your accountant in the loop from the start. We won’t arrange a sale-and-leaseback without that.

There’s a second check worth knowing about: if the original system was part grant-funded, the grant may carry clawback terms triggered by a change of ownership. We review the grant conditions before structuring anything — a detail covered in our grants and funding guide.

Refinance as an alternative

If a full sale-and-leaseback isn’t the right fit, a straight refinance — borrowing against the value of the owned system via a secured facility — can release capital without disposing of the asset, avoiding the balancing-charge question altogether. Which is better depends on your tax position, your balance sheet and how much capital you need to free. We model both.

Sale-and-leaseback vs refinance at a glance

Both routes free capital from a system you already own, but they treat ownership, tax and your balance sheet differently.

	Sale-and-leaseback	Refinance (secured loan)
Ownership	Funder buys the system; you lease it back	You keep ownership throughout
Who claims capital allowances	Funder (lessor) going forward; the benefit is passed to you through lower rentals	You do — though in practice they were usually already claimed on the original purchase
Balance sheet	Asset comes off; a lease is recognised in its place (under revised FRS 102, most leases sit on the balance sheet for periods beginning on or after 1 January 2026)	Asset stays on your books; the new facility is added as a liability
VAT timing	VAT is charged on the sale of the system, normally recoverable if you are VAT-registered	No disposal, so no VAT event on the asset
Balancing charge	Likely, because the asset is disposed of — see the worked example	Avoided, because there is no disposal
Typical term	3–8 years	3–7 years
Best for	Releasing the full asset value, or wanting the system off the balance sheet	Keeping ownership and sidestepping a balancing charge

For the allowances detail behind this, see our capital allowances guide.

When this route is NOT the right choice

Sale-and-leaseback earns its keep when you have a concrete, higher-return use for the freed capital — a second installation, storage, an acquisition. If you don’t yet have somewhere productive to put the money, the cheapest position is simply to keep owning the system outright: hold it as a capital purchase and revisit later. And where the balancing charge on disposal would be large relative to the cash you actually need, a straight refinance usually wins, because it releases capital without triggering that charge. We only recommend the sale-and-leaseback when the numbers beat both of those alternatives.

Who this suits

Refinance and sale-and-leaseback work best for businesses that:

• already own a solar system outright (typically bought with cash);
• want to release that capital for another investment without losing the system; and
• have an accountant available to confirm the tax treatment and any grant conditions.

If you’re funding a new system rather than releasing capital from an existing one, start with hire purchase, a finance lease or an equipment loan instead.

Common questions

Will a sale-and-leaseback affect my energy savings or export income?

No. You keep operating the system exactly as before, so you keep the on-site energy savings and any Smart Export Guarantee income from surplus power sold back to the grid. This is the key difference from a power purchase agreement, where the funder owns the output and keeps the export revenue. If you’re weighing the two up, our asset finance vs PPA comparison sets out who keeps what under each.

Can I release capital from a solar system that still has finance owing on it?

Sale-and-leaseback needs the system owned outright, so any outstanding hire purchase or loan on it has to be cleared first. In practice the funder settles the remaining balance from the sale proceeds and releases only the equity above it — so if you’d paid down half of a £420,000 system, you’d free roughly the value sitting above the settlement figure, not the full amount. If most of the value is still financed, refinancing the existing agreement is usually the better route.

Release the capital in your system

Tell us about the system you own — size, age, what you paid, and whether any grant was involved — and we’ll model both sale-and-leaseback and refinance, with the tax position checked alongside your accountant. Request a quote to get started.