R&D Tax Credit Advance for Renewable Energy
By Joshua Giles, Founder and Director · Reviewed by the CoreFi credit team
Last updated 20 July 2026
CoreFi is a broker, not a lender. We do not set rates and lenders make all credit decisions.
In short: £25k - £2M over 3 - 12 months (until HMRC pays). An R&D tax credit advance is not a loan against your assets.
An R&D tax credit advance is not a loan against your assets. It is a short-term facility secured against a specific HMRC receivable: the credit your accountant has calculated, or is calculating, for the period just closed. The lender advances a proportion of that figure, typically 70 to 80 per cent, and gets repaid directly when HMRC processes the claim. You owe nothing beyond that repayment, and no interest drags on past the settlement date.
For renewable energy companies this matters more than most sectors because the qualifying spend tends to be deep and varied. Battery chemistry, power electronics design, novel inverter architecture, grid integration software, bifacial cell manufacturing processes, offshore turbine load-fatigue modelling: all of these sit squarely inside the R&D relief boundary if there was genuine technical uncertainty and you were attempting to resolve it. The merged scheme, which applies to accounting periods starting on or after 1 April 2024, pays a net benefit of around 15p per £1 of qualifying expenditure for profitable companies. Loss-making companies claiming the payable credit can see higher effective rates. If your annual R&D spend is £500k, you are likely looking at a credit in the range of £75k to £150k depending on your tax position, and you can draw against that rather than wait six to twelve months for HMRC.
Where we see this used most often is to bridge the gap between closing one development programme and funding the next one. A company that has just finished a year of intensive battery-management-system work needs cash to start the next phase while the claim sits in the HMRC queue. That is exactly what this facility is designed to do. The lender who says yes to this is rarely a high-street bank; it is a specialist R&D finance provider who has their own view on claim quality and knows how to read a technical narrative. We are a commercial finance broker, not a lender, so our job is to put your claim in front of the provider most likely to fund it.
Key Benefits
- Subcontracted R&D at 65 per cent under the merged scheme counts toward your claim. If you use external labs, universities, or engineering contractors, that spend is in scope and increases the advance available.
- Loss-making early-stage cleantech companies are often the strongest candidates. The payable credit is an immediate cash receivable, and some lenders will advance against it even where the company has minimal other assets.
- The facility term tracks the HMRC repayment cycle, typically three to twelve months, so you are not carrying long-term debt. Once HMRC pays, the facility closes.
- Grant-funded R&D requires careful carve-out but does not disqualify the whole claim. We work with advisors who can separate eligible spend from grant-covered expenditure so the advance reflects the maximum defensible credit.
Frequently Asked Questions
What renewable energy R&D actually qualifies?
Technology development work where there was genuine technical uncertainty: battery chemistry & cell architecture, solar cell efficiency improvements, offshore and onshore turbine load modelling, power electronics and inverter design, grid integration and stability software, novel manufacturing processes for clean energy components. Routine installation, commissioning, and operations work does not qualify, and neither does pure commercial development of a known technology. The line is whether your engineers were resolving something that was not known to be achievable.
Can I claim if some of my R&D was grant-funded?
You can claim on the expenditure that was not covered by the grant, but the grant-funded portion must be excluded. Under the merged scheme, notified State aid grants require separate treatment. A good R&D tax advisor will map the grant coverage against qualifying costs before filing. We would not advance against a claim that has not been reviewed by someone competent to do that separation.
How are subcontracted costs treated?
Under the merged scheme, payments to unconnected subcontractors carrying out R&D on your behalf are eligible at 65 per cent of what you paid. Connected-party subcontracting has different rules. If you use external labs or specialist engineering firms for any of the technical work, those costs contribute to the claim and therefore to the advance.
Is this available for early-stage companies with no revenue?
Yes, and in some ways loss-making companies are the easiest deals to place. The payable R&D credit is a genuine HMRC receivable even where the company is pre-revenue, and certain lenders will advance against it on that basis. What they want to see is a credible claim, ideally prepared or reviewed by an experienced R&D advisor, and a clear timeline for filing. As a broker we cannot promise approval; the lender makes that decision after reviewing the claim narrative.
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