The average wait for a grid connection for a new solar array or heat pump in the UK has stretched beyond 12 months in some regions. That is the reality Ofgem is trying to fix with its latest update on the ‘Connect’ pillar of GB Connections Reform, as reported by Osborne Clarke. The regulator has proposed changes to how applications are queued and processed, aiming to shift from a ‘first come, first served’ system to one that prioritises projects that are ready to connect. For homeowners, the implications are concrete: a heat pump or solar installation that currently lingers in a grid connection queue for 18 months might be completed in a quarter of that time.
Who qualifies, and who doesn’t
The reforms target all grid connection applications, including those for domestic-scale generation and storage. Ofgem has said it will introduce a ‘connect or move aside’ principle: if a project cannot meet a realistic connection date, it loses its place in the queue. That is good news for homeowners who have already secured an installer and are ready to proceed. But the catch is that the new system still requires Distribution Network Operators (DNOs) to have the capacity to process applications faster. Currently, DNOs in some regions are overwhelmed: UK Power Networks reported a 400% increase in connection applications between 2020 and 2023. Whether the reforms will be matched by investment in DNO staffing and IT systems remains an open question.
What it costs a typical 3-bed semi
A faster connection does not automatically mean a cheaper one. Ofgem has not proposed reducing the connection fees themselves, which typically range from £400 to £1,200 for a standard domestic solar-plus-battery installation, depending on the DNO region. However, the financial benefit for homeowners comes from avoided delay. A solar array that is connected in 4 months instead of 12 generates roughly 2,000 kWh more electricity in that year, worth about £240 at current price cap rates (24.5p/kWh). For a heat pump, the saving is in avoided gas bills: a household switching from a gas boiler could save £200–£300 annually, and a year’s delay means that saving is postponed. The Energy Saving Trust estimates that a typical 3-bed semi with solar panels saves £200–£300 per year on electricity bills, so a six-month delay costs £100–£150 in lost savings.
The ‘but’ pivot, installer capacity and grants
Yet faster grid connections are only one piece of the puzzle. The UK currently has around 4,000 certified heat pump installers, far short of the 50,000 the Climate Change Committee says are needed by 2030. The Boiler Upgrade Scheme offers £7,500 off a heat pump, but homeowners still face upfront costs of £2,000–£8,000 after the grant. Ofgem’s Connect reform does nothing to address installer shortages or upfront finance. What it does do is remove one bottleneck: the grid queue. For a homeowner who has already found an installer and secured a grant, the reform could cut the total project timeline from 18 months to 6 months. That is meaningful, but it is not a silver bullet.
What to do next
Homeowners considering solar, heat pumps, or EV chargers should start planning now. Check your DNO’s current connection times via the Energy Networks Association postcode tool. If you are in a region with long queues, such as parts of the South East or Scotland, the reforms may bring relief by late 2025. Meanwhile, apply for grants early: the Boiler Upgrade Scheme has a finite budget, and the Solar Together group-buying scheme runs in cycles. Ofgem’s Connect reform is a step forward, but the real power remains with the homeowner: choose an installer with a track record of completing connections, and do not wait for the grid to catch up.
Frequently Asked Questions
Not directly, connection fees are set by DNOs and have not been reduced. But a faster connection means you start saving on electricity bills sooner. A six-month delay can cost £100–£150 in lost savings for a typical 3-bed semi with solar panels.
Ofgem has not confirmed a specific date, but the reforms are expected to be phased in from late 2025. Homeowners should check with their DNO for current connection times and plan installations accordingly.
