The hardest thing to finance about a UK renewables or storage project is not the technology or the planning risk. It is that the developer does not control when the asset starts earning. A solar farm or battery site generates no revenue until it connects to the grid, and the connection date is decided by the network and the queue, not by the project sponsor. For years that queue made the date close to unknowable. As of January 2025 around 770GW of capacity was sitting in the connection pipeline, several times what the grid actually needs for a clean power system by 2030, and offers had stretched well into the late 2030s. A ready, fundable project could be stuck behind speculative schemes that would never build, with a connection date a decade out and no way to jump it.
You cannot write a sensible debt schedule against a revenue start date that might move by five years. That is the problem this kind of finance has to solve.
The reform changed what a connection date means
In April 2025 Ofgem approved the connections reform package known as TMO4+, delivered through code changes including CMP434, and the new regime went live on 10 June 2025. It replaces the old first-come, first-served queue with a first ready, first needed, first connect model run by the National Energy System Operator. The mechanics matter to anyone trying to fund through the wait, because they change what a connection offer is worth as security.
Projects now sit at one of two gates. A Gate 1 offer is indicative only, an unconfirmed date and location with no detailed studies behind it and no firm queue position. A Gate 2 offer is the real thing: it requires the project to demonstrate readiness, typically secured land rights or a validated planning application, plus strategic alignment with the Clean Power 2030 capacity targets, and in return it gives a confirmed connection point and date and triggers binding milestones. For a lender, a Gate 1 project and a Gate 2 project are not the same asset. One has an aspiration; the other has a dated, conditional commitment from the network.
The trade-off is that a Gate 2 offer comes with teeth. Queue Management Milestones require the project to evidence progress, initiating and then securing consents, committing to the project, by set dates. Miss them without good reason and NESO follows a termination process and removes the project from the queue. The reform is doing exactly what it was designed to do: projects that cannot evidence readiness or strategic need have their offers varied down to conditional Gate 1 terms, and stalled projects are terminated to free capacity for ones that are progressing. Connection is now a date you can lose, not just a date you wait for.
What a lender needs to see to fund through the wait
The energisation date is uncertain, but it is no longer unknowable, and that is what makes the wait financeable. The file has to convert queue position into something a credit committee can size. In practice that means evidencing:
- Gate 2 status, or a credible path to it. A confirmed offer is the difference between a development loan and a punt. Land rights and planning are not just consents; under the reform they are the readiness criteria that hold the queue position.
- The milestone calendar and how it will be met. Because missing a Queue Management Milestone now risks termination, the lender's exposure is tied to the developer hitting consent and commitment dates. The funding has to be structured around that calendar, not a single bullet at energisation.
- Headroom for the date to slip. A facility that only works if the project connects on the indicative date is mispriced. The structure should survive a reasonable delay, with interest roll-up or a longer interest-only window before revenue, because some movement is the base case, not the downside.
- What revenue looks like on day one. A contracted offtake or PPA crystallises the cash flow the moment the site energises and lets the debt be sized against it; a merchant-exposed project carries the connection risk and the price risk together, and is priced accordingly.
Structuring around an uncertain start date
The right product depends on where the project sits in the gap between planning and energisation, and the working assumption should be that the developer needs to survive the wait, not just complete the build.
- Development and bridging finance carries the land and pre-construction costs through to a fundable connection. Where there is a freehold or long leasehold site behind the project, property finance can secure development lending against the land, with the connection offer as the event that unlocks the next stage. This is the workhorse for getting from a Gate 2 offer to a shovel-ready, connectable project.
- Working capital to outlast the queue. A developer's overheads run for years before a delayed project pays anything, and a cashflow loan covers the team and the pipeline through a connection wait that has slipped, so a slow energisation does not kill an otherwise sound business.
- Equity where the date is still too soft for debt. A pre-Gate 2 project, or one whose connection date is genuinely speculative, is not a debt story yet. An equity introduction to an infrastructure or energy-transition fund can carry early-stage development risk that lenders will not, and that capital is best kept until a confirmed offer makes the project debt-bankable.
The instinct to refinance the day the connection date firms up is the right one. Lenders price the gap between a Gate 1 aspiration and a Gate 2 commitment heavily, and a project that has converted indicative terms into a confirmed, milestone-backed offer is a materially cheaper asset to fund than it was the day before. The connection date used to be the thing that made these projects unfinanceable. Under the new queue it is becoming the single event that, once crystallised, lets the whole capital stack reprice.