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September 5, 2025 – A new report from the energy research group Ember argues that the best way to protect household budgets from fuel price swings is to electrify the home, not just the power grid. The study focuses on Britain, but the concept it calls "electro-fortification" travels easily to the United States.
The term is more than a slogan. It describes what happens when a home pairs rooftop solar, a battery, a heat pump and an electric vehicle. Instead of buying every unit of warmth, mobility and light from a volatile global fuel market, a household begins generating, storing and using its own clean electricity. Ember estimates that an electrified home is up to ten times better protected from energy price shocks, while also emitting far less carbon.
That matters in the US, where most houses still burn fossil fuels and most cars still use gasoline. Heating with natural gas, propane or heating oil leaves families exposed to every international gas price tremor. Electro-fortification does not require someone to become an energy expert. It simply swaps a fuel bill for a more predictable electric bill, and then gives the home a way to shrink that bill too.
The UK numbers are moving fast. Ember reports that every month about 6,000 British homes add a battery, 15,000 install rooftop solar and 48,000 households buy electric cars. In Britain, domestic battery uptake has doubled every year for more than three years. Nearly half of new solar installations now come with a storage unit attached. A rooftop solar system can cut the annual cost of charging an electric car by more than £500, because the car is partly fueled by the sun instead of by an oil refinery and a power station.
The US is already heading in a similar direction. The Inflation Reduction Act gives households tax credits for rooftop solar, battery storage, heat pumps and electric vehicles, in some cases covering a third of the installed cost. Major utility programs are starting to pay customers for using their batteries during grid emergencies. And state-level energy efficiency standards are pushing cold-climate heat pumps into many more homes.
Ember's UK findings also carry a geographic lesson. In Britain, Wales has the highest take-up of domestic solar, batteries and heat pumps, while rural Scotland leads on electric heating. More than one in ten homes in the Orkney and Shetland islands now has a heat pump. In the US, the picture is just as uneven. California, Texas and Florida lead in rooftop solar capacity. The Northeast is well ahead on cold-climate heat pumps. The Southeast is seeing a rapid rise in battery storage, in large part because hurricanes make grid outages a predictable cost of living.
That patchwork matters because policy does not have to be uniform. As Ember co-author Josie Murdoch puts it, communities and regions have different starting points, so officials should tackle the easy wins first and tailor the incentives to local conditions.
There is also a wider benefit than lower monthly bills. Homes with batteries and solar can become small power plants that help the grid during evening peaks or winter storms. Utilities in several states are already experimenting with "virtual power plants," in which thousands of household batteries are pooled together and dispatched like a clean gas plant. That can reduce the need for new natural gas peakers, lower wholesale electricity prices and make power outages rarer.
The report's co-author Frankie Mayo calls modern household electrotech "protective armour" for homes: it stabilizes bills and cuts carbon at the same time. He also notes that much of the recent UK adoption happened without large subsidies, mainly because households saw energy prices climbing and decided to act. In the US, the policy support is stronger, so the switch should be easier for more people.
None of this means the transition is automatic. Upfront cost is still the biggest barrier. Renters, older households and low-income families often cannot install a heat pump or a battery, even when they need it most. In the US, that is an urgent design problem. Bringing electro-fortification to manufactured-home communities, multi-family buildings and rural towns will require creative financing, small-dollar loans and incentives that follow the appliance, not the owner.
The US grid is already far cleaner than many people assume. According to recent data from the US Energy Information Administration, roughly half of American electricity comes from low-carbon sources including nuclear, wind, hydro and solar. That means a household that plugs in its heating and transport is not simply switching from one volatile fossil fuel to another. It is moving a larger share of its energy spending onto assets that have no fuel price at all.
Extreme heat, hurricanes and winter gas spikes are becoming more frequent, and they keep teaching the same lesson: relying on a global commodity chain makes a household fragile. An electrified home flips that logic. It still participates in the grid, but it participates from a position of strength.
Ember's report was written for the UK, but its timing is good for the US. Energy costs remain a deal-breaker issue for millions of families, and the fastest way to lower those costs without adding to carbon emissions is to electrify everything that can be electrified. Rooftop solar, batteries, heat pumps and electric vehicles are no longer experimental. They are the household infrastructure that makes energy price shocks survivable.
The US opportunity is actually bigger than Britain's in absolute terms. American homes are larger, use more energy, and own more cars. Every roof that gains a panel and every garage that gains a charger is one more household that stops waiting for the next oil price crisis. The report's message is simple: the technology exists, the savings are real, and the safest home may be the one that is plugged in.
