Solar Panel Sales Surge as Businesses Prioritize Cost Savings Over Sustainability

It's all about saving money now, not just sustainability.

Those are the words of the founder of a solar power firm who sums up the shift in the industry neatly. Ben Harrison's Gloucestershire company has installed 65% more solar panels for businesses since the Iran war started, and energy bills soared.

Across the UK, the total amount of solar power installed has risen 11% compared to last year, according to government figures. For companies, the maths is simple.

In Somerset, the makers of the Henry vacuum cleaner have just spent £1.5m on new solar panels at their Chard factory. The financial director said he will get his money back "in less than four years".

Fly low over a typical industrial estate and you'll see plenty of solar panels on factory rooftops. But at the huge Numatic plant in Chard, they have gone to a new level.

They have just filled a whole field behind the factory.

There are 1,200 people working here, making Henry, the famous little red vacuum cleaner, and his pink friend Henrietta.

They make everything except the motors on site, from scratch. Moulding their own plastic and automated robotic production sucks power like, well a vacuum cleaner.

"Electricity is hugely expensive," says Steve Whitlock, the firm's financial director.

He is proudly showing me the brand new field of solar panels, 2,672 in all.

Until recently, it would be sustainability managers promoting this kind of work. But today, a solar installation costing £1.5m is "a major investment, like any other", according to Whitlock.

"We need electricity to manufacture our products, and with the price going up and up, this solar field has given us a step change to generate our own electricity, and not rely on the market," he added.

On sunny days, the new system will power the whole plant. Across the year, they project it will average about a quarter.

But further investments in high-tech inverters and batteries will take them to about half their total energy needs.

Within four years, Whitlock calculates the solar system will have paid for itself.

And next time a global conflict pushes up the price of electricity, this factory will be more protected.

The Somerset solar field is unusually big, but it's not unique.

Since the Russian invasion of Ukraine first caused energy prices to soar, many firms have looked at solar power as an investment, not just a green initiative.

Now the war in Iran has pushed energy bills up again, and companies worry about what else might happen in the future.

Government figures revealed a big increase in March 2026, with 27,000 new solar installations in total. That is the highest since 2012, and pushed the total number of solar systems to over two million.

Official statistics do not separate solar power on commercial buildings from residential installations. But because companies use power in the daytime, while the sun is out, they stand to save a lot more than domestic customers, whose main use is in the morning and evening.

Chris Hewett, CEO of the trade body Solar Energy UK, said the south-west had seen the biggest increase in the country in solar panels installed by companies.

He believes solar power is the "quickest and most effective" way for business to cut energy bills.

High on a warehouse rooftop in Gloucester, Ben Harrison spells it out starkly for me.

He started Mypower, his solar installation firm, 15 years ago.

"In the early days it was mainly about sustainability," he said.

"Now it's all about money. Customers are all about controlling their long-term electricity costs, as prices of energy have gone up."

Over the last three months, his firm has installed 1,783 solar panels per month, 65% more than the average over the rest of the year.

It all uses a huge amount of electricity. The day I visited it was cloudy, but the 1,710 panels were still powering the whole site, and selling some to the national grid on top.

While many families struggle to keep up with rising energy bills, fueled by the war in Iran, companies are now deciding to spend big money to keep their future bills under control.

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