The UK added 1.2 GW of solar capacity in 2023, but that figure needs to triple by 2030 to meet net-zero targets. Yesterday, a single planning decision in Hampshire brought that target a little closer. British Solar Renewables won its appeal for a 29MW solar farm near the village of Lockerley, overturning a previous refusal by Test Valley Borough Council. The decision, as reported by Solar Power Portal, is one of several recent signals that the planning system is shifting in favour of renewables.
What a 29MW farm means for your rooftop
Every large solar farm that gets built reduces the unit cost of solar panels for everyone. The economics are straightforward: developers order in bulk, manufacturers scale production, and the price per watt falls. Since 2010, solar module costs have dropped by about 90%. A 29MW farm in Hampshire will accelerate that trend, albeit marginally. For a typical 3-bed semi looking at a 4kW rooftop array, the hardware cost has already fallen from £7,000 to roughly £5,000 over the past five years. More utility-scale approvals will push that lower. The catch is that grid connection queues remain the bottleneck, National Grid’s data shows over 200 GW of solar projects waiting for connection, most of them stuck behind transmission upgrades that won’t arrive until the late 2020s.
The planning pivot, and what it means for your street
What this decision really signals is a change in planning culture. The inspector who approved the Hampshire site cited the “urgent need” for renewable energy, a phrase that is appearing more frequently in appeal decisions. Ofgem’s latest data shows that solar generation in the UK grew by 12% in 2023, but the Climate Change Committee says we need 70 GW of solar by 2035, up from 16 GW today. That arithmetic is forcing planning inspectors to weigh national energy security against local visual impact. For homeowners, this is double-edged. On one side, it makes it slightly easier to get planning permission for a ground-mounted array if you have the land. On the other, it means the government is serious about large-scale solar, which could reduce the premium paid for rooftop generation via the Smart Export Guarantee. The Energy Saving Trust notes that export tariffs are already falling, from 15p/kWh in 2021 to around 8p/kWh today for new installations.
Who wins, and who pays
The immediate winners are the 5,000 homes the farm will power once it connects. But the ripple effect matters more. Every megawatt of utility-scale solar reduces the UK’s reliance on gas-fired peaker plants, which pushed household bills up by £200 during the 2022 crisis. The real prize for homeowners, however, is community solar. The government’s upcoming Local Power Plan, expected in autumn 2025, will allow neighbourhoods to invest in shared solar arrays and receive credits on their bills. Hampshire’s decision proves that the model works, the question is whether the grid can absorb it. Ofgem’s new ‘first ready, first connected’ rule, introduced in November 2024, should help, but it will take at least two years to clear the backlog.
What you can do now
Check whether your local council has a solar-specific planning policy, 68% of English councils still don’t. If you’re considering rooftop solar, the best time to buy is now: panel prices are at a five-year low and the 0% VAT on installations, introduced in April 2022, runs until March 2027. For those without a suitable roof, ask your local energy group about community solar shares. The Lockerley decision shows that big solar is coming, but the real revolution will be when every street can generate its own power. That moment is closer than it was last week.
Frequently Asked Questions
Indirectly, yes. Large solar farms reduce the UK's reliance on expensive gas generation, which lowers wholesale electricity prices. The effect is small, typically £5-£10 per year per household, but cumulative as more solar comes online.
