Ofgem fined OVO Energy £1.2 million this week for forcing prepayment meters onto vulnerable households without proper safeguards. The penalty comes two years after the regulator banned involuntary installations during winter, a ban OVO apparently ignored.
As reported by the End Fuel Poverty Coalition, this is not an isolated case. British Gas was fined £3.4 million last year for similar breaches. The pattern is clear: suppliers treat fines as a cost of doing business rather than a deterrent.
Why prepayment meters matter for eco-home upgrades
A typical prepayment meter tariff costs 10-12% more per kWh than a standard direct debit plan, about £150 extra annually for a 3-bed semi using 12,000 kWh. That is money that could go toward double glazing, loft insulation, or a heat pump survey. The Energy Saving Trust estimates a well-insulated home saves £200-£300 a year on heating. A prepayment meter effectively cancels out that saving before you even start.
Worse, many green energy tariffs, including those offering time-of-use rates for heat pumps or EV charging, are unavailable to prepayment customers. So a household forced onto a prepayment meter cannot access the cheapest renewable electricity deals when they upgrade their heating system.
Who qualifies, and who does not
Ofgem rules state suppliers can only install a prepayment meter as a last resort, after offering debt repayment plans, checking vulnerability, and visiting the home. OVO failed on all three counts. The fine is welcome, but the real question is how many households were pushed onto emergency meters who could have stayed on standard credit.
Homeowners struggling with energy debt should know they have options. The Warm Home Discount provides £150 off electricity bills for qualifying low-income households. ECO4 can fund full insulation and heating upgrades for those on means-tested benefits. Neither requires a prepayment meter. If your supplier threatens one, ask for a debt repayment plan first, Ofgem’s rules require them to offer it.
What this means for your EPC rating and resale value
A prepayment meter does not directly affect your Energy Performance Certificate rating. But the higher tariff means you spend more on energy for the same home, so your actual energy costs are higher than the EPC assumes. That matters when selling. Buyers see high bills and factor them into offers.
The catch is that many households on prepayment meters are also the least likely to afford eco-upgrades. The government’s Boiler Upgrade Scheme offers £7,500 toward a heat pump, but you need a suitable EPC rating (usually C or above) and a home with decent insulation. If you are spending £150 extra a year on meter premiums, saving for that upgrade takes longer. The cycle reinforces itself.
Yet there is a path out. The Energy Company Obligation (ECO4) scheme can cover 100% of insulation and heating replacement costs for eligible households, no upfront payment. That includes moving you off a prepayment meter if your new heating system requires a different tariff. The catch: you need to apply through your energy supplier, and many do not advertise the scheme. Call them. Ask specifically about ECO4 flexibility.
What to do next
Check your latest bill. If you are on a prepayment meter and were not offered a debt repayment plan first, complain to your supplier. If they do not resolve it, escalate to the Energy Ombudsman. The OVO fine shows the regulator is watching, but it only acts on complaints. Do not accept a prepayment meter without exhausting every other option. And if you qualify for ECO4 or Warm Home Discount, apply now, before winter pushes more households into the same trap.
Frequently Asked Questions
Yes. Ofgem rules require suppliers to offer a debt repayment plan first and assess vulnerability before installing a prepayment meter. If they do not, you can refuse and complain to the Energy Ombudsman.
No, but it may limit your choice of heat pump tariffs. Some suppliers offer time-of-use rates that are not available on prepayment meters. Switching to a standard credit meter before applying can help you access cheaper green electricity deals.
