Financial close, contractors named, construction this year
Fidra Energy reached financial close on 17 July on West Burton C, a 500MW / 1.1GWh battery energy storage project in Nottinghamshire. The scheme represents around £250m of investment, funded by £231m of new loan facilities from a club of international lenders alongside capital already committed by EIG and the National Wealth Fund. It sits on the site of the former West Burton coal power station.
Five days later, the contracting team was confirmed. Sungrow supplies the battery systems. H&MV Engineering takes the role of principal designer and contractor for the 400kV grid connection and the electrical scheme, and is also responsible for the erection and commissioning of the Sungrow units. Construction starts later this year. Full commercial operation is expected in 2028, with a fifteen-year capacity market agreement running from October 2028.
That is a clean, well-funded programme with a fixed end date. Which is precisely why it is worth reading as a workforce story rather than a financing one.
What a 400kV connection actually requires
Battery storage is often described as if it were a modular product. Containers arrive, get bolted down, and the site starts trading. The reality on a 500MW site is that the containers are the easy part.
The work that governs the programme is electrical. A 400kV grid connection means transmission-voltage switchgear, cable terminations and jointing, protection and control systems, earthing, and a testing and commissioning sequence that has to satisfy the network operator before a single megawatt-hour moves. Between the batteries and the substation sits a large volume of medium-voltage cabling, transformer connections and containerised plant that all has to be installed, terminated and proved by people with the right authorisations.
None of that is work you can staff from a general electrical labour pool. HV jointers, authorised persons, commissioning engineers and electricians with substation experience are a distinct and much smaller population than the trade as a whole. The qualification routes are long. A commissioning engineer signing off at 400kV has typically spent a decade getting there.
The arithmetic
Great Britain's operational battery fleet reached roughly 7.2GW in the first quarter of 2026. The Government's Clean Power 2030 Action Plan targets 23GW to 27GW of short-duration battery capacity by the end of the decade. Meeting the lower bound means adding more than three times the capacity that exists today, inside four years, on top of the transmission reinforcement and network renewal already committed elsewhere.
Every one of those projects needs the same skills West Burton C needs. So does every new substation, every data centre connection, and every cable framework let by a DNO. The demand curves all point at the same workforce.
The supply side is moving, but slowly and from a small base. As we noted before, CSCS Alliance data shows card issuance to under-25s rising, with electrotechnical occupations up 15.6% between 2023 and 2025. That is genuinely good news and it is worth saying so. It is also a statistic about people entering the trade, not people qualified to terminate and commission at transmission voltage. A card issued in 2025 does not put an authorised jointer on a 400kV site in 2027.
Why this matters to contractors
For anyone resourcing this kind of work, the practical consequence is a timing problem rather than a recruitment problem.
Projects like West Burton C reach financial close, name a contractor and mobilise within months. The labour market does not move at that speed. When several schemes hit their electrical phase in the same window, which is exactly what the 2026 to 2028 pipeline implies, the companies that already have supply relationships in place mobilise on programme. The firms that begin sourcing when the notice to proceed lands are bidding against everyone else for the same fifty or so available jointers in a region.
Rate inflation follows. So do the less visible costs: a commissioning phase that slips because two authorised persons were unavailable in the week they were needed, or a subcontractor package repriced mid-programme because the labour assumption underneath it no longer holds.
Where Silvmarc fits
Silvmarc supplies vetted electrical operatives to contractors working on substations, HV connections and energy infrastructure across the UK. Right-to-work checks, card verification and payment compliance are handled before an operative arrives on site, so mobilisation runs at project pace rather than administrative pace.
We are not going to pretend that solves a national skills shortage. It does mean that when a package needs eight electricians in Nottinghamshire in six weeks, the answer is a schedule rather than an advert.
If you are resourcing electrical works on a battery, substation or grid connection scheme, talk to Silvmarc before the programme dates are fixed, not after.
£231m of debt was arranged for West Burton C in a matter of months. The people who will energise it took years to qualify, and there are only so many of them.