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UK Energy Project Finance: Legal Guide 2025

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Part ofEnergy

Updated June 2026 · England & Wales
Putting together the funding for an energy project in the UK involves a tangle of commercial, regulatory and contractual issues that all need to line up before money changes hands. Whether you are developing a solar farm, an offshore wind asset, a battery storage site or a hydrogen facility, the financing agreements you sign will set the commercial tone for the life of the project. They determine who carries which risks, what happens if construction slips, and how revenues are allocated between developers, investors and lenders. This page sets out the main categories of financial agreement you are likely to encounter, the legal points that tend to come up during negotiations, and the practical steps most developers take to get a deal across the line. It is written for founders, project managers and in-house teams who want a clearer view of the landscape before speaking to funders or advisers.

Overview

Energy project finance in the UK is the process of raising capital, usually a blend of debt and equity, to build and operate infrastructure that generates, stores or distributes energy. The funding structure is typically non-recourse or limited-recourse, meaning lenders look primarily to the project's own cash flows and assets for repayment rather than the wider balance sheet of the sponsor.

That changes the legal dynamics significantly. Lenders want detailed visibility over the project company, its contracts, its permits and its revenue arrangements, because their security sits within the project itself. Developers, in turn, need to balance the lender's demands for control and information against the commercial flexibility they need to actually build and run the asset.

The legal documents that wrap around a financing, loan agreements, security packages, intercreditor arrangements, direct agreements with contractors and offtakers, are where these competing interests get resolved. Getting the structure right early tends to save considerable time and cost later when construction milestones, drawdowns and conditions precedent come into play.

Key steps

  1. Map the project structure early. Before approaching funders, work out how the project company will be held, who the sponsors are, and how equity will flow in. Lenders will want to see a clean corporate structure, identifiable sponsors, and a clear view of how revenues from the asset will reach the borrowing entity. Getting this mapped on paper before negotiations saves rework later.
  2. Build a robust financial model. Funders will usually ask for a financial model prepared or reviewed by an independent adviser. This model projects construction costs, operating expenses, revenue scenarios and debt service cover ratios across the life of the project. It becomes the reference point for loan sizing, covenants and sensitivity testing, so the assumptions behind it need to be defensible and clearly documented.
  3. Complete permits and planning consents. Construction funding in particular will not be released until planning permission, grid connection agreements and any required environmental permits are in place. Start these workstreams well ahead of financial close. Delays here can cascade into missed drawdown windows, increased costs and renegotiation of loan terms.
  4. Negotiate the security package. Lenders will typically take security over the project company's shares, its bank accounts, its receivables and its key contracts, often supported by direct agreements with contractors and offtakers. The scope and enforceability of this package is heavily negotiated. Work out early which assets you are willing to pledge and how step-in rights will operate in a default scenario.
  5. Agree reporting and covenant obligations. Finance agreements will impose ongoing obligations to report on construction progress, operational performance and financial ratios. Review these carefully. Covenants that look reasonable at signing can become problematic when market conditions shift, so push for cure periods, equity cure rights and sensible thresholds that reflect how the project will actually perform.

Common questions

If you're dealing with this kind of situation, a call with an experienced legal adviser can help you work out the right next step — from £89.

Common questions

Q What is the difference between project finance and construction finance?
Project finance is a broader term covering long-term debt raised against the cash flows of a specific project, often spanning construction and operation. Construction finance is a narrower facility focused on funding the build phase, usually with tighter conditions around permits, contractor arrangements and equity contributions. Many UK energy deals combine both, with a construction facility converting into a long-term term loan once the asset reaches commercial operation.
Q What security do lenders typically take over an energy project?
Lenders usually take a comprehensive security package including fixed and floating charges over the project company's assets, share security over the borrowing entity, assignments of key contracts and insurance proceeds, and charges over project bank accounts. Direct agreements with major counterparties, such as EPC contractors and offtakers, give lenders step-in rights if the borrower defaults. The exact package depends on the technology, the asset life and the lender's risk appetite.
Q How important is the financial model in loan negotiations?
Very important. The model drives loan sizing, the debt service cover ratio, scheduled repayments and many of the financial covenants. Lenders often require an independent model auditor to review the assumptions before financial close. If the model is weak or overly optimistic, it will either be rejected or result in tighter covenants and lower gearing, so it is worth investing in a rigorous version from the outset.
Q What happens if construction is delayed?
Delays can trigger a range of contractual and financial consequences. The EPC contract will usually include liquidated damages for late completion. The loan agreement may require additional equity, extended availability periods or waivers from lenders. Long stop dates in offtake agreements can also come into play. The practical outcome depends on the cause of the delay, the contractual risk allocation, and how cooperative the various counterparties choose to be.
Q Do I need equity investment before lenders will commit?
Typically yes. Lenders expect sponsors to have skin in the game, usually a defined minimum equity contribution that must be funded before or alongside debt drawdowns. The equity-to-debt ratio depends on the technology, the revenue profile and the perceived risk. For established technologies with contracted revenues, gearing can be higher. For newer technologies or merchant exposure, lenders usually require a larger equity cushion.
Q How are regulated revenues like Contracts for Difference treated in financing?
Revenue support mechanisms such as Contracts for Difference are generally viewed positively by lenders because they reduce price risk and provide more predictable cash flows. The financing documents will assign the contract to the lenders as part of the security package, and the terms of the support mechanism will feed directly into the financial model. Loss or termination of such a contract is typically an event of default under the loan agreement.
Q Can I change lenders or refinance after construction?
Most project finance facilities allow for refinancing, and many sponsors deliberately plan for this once the asset is operational and construction risk has fallen away. Operational assets usually attract cheaper debt from a wider pool of lenders, including institutional investors. The original loan agreement will set out any prepayment fees, make-whole provisions or consent requirements that apply, so the economics of refinancing need to be modelled carefully.
If you're dealing with this kind of situation, a call with an experienced legal adviser can help you work out the right next step — from £89.

Sources

This guide is based on primary UK law and official guidance.

Brad Askew, Solicitor (non-practising)

Written & reviewed by

Brad Askew Solicitor (non-practising)

Brad is on the roll of solicitors of England & Wales but does not hold a practising certificate and does not provide legal advice. LegalDocuments.co.uk is not a law firm and does not provide regulated legal advice.

Legal disclaimer
This article is for general information only. It is a tool to help you find your way — not legal advice, and not a substitute for speaking to a qualified adviser about your situation.