BRITAIN’S solar industry is facing devastation and consumers could see energy bills rise after the Chancellor refused to cancel a planned tax hike of up to 800 per cent on rooftop solar schemes.

The Solar Trade Association described the Government’s refusal to bend over the increase which are due to come into force in April as “nonsensical” and “absurd”.

State schools with solar panels will be forced to pay, while private schools will remain exempt.

According to the Government’s own figures, solar power is expected to become the cheapest form of electricity generation sometime in the 2020s.

But the UK solar industry lost 12,000 jobs last year and there has been an 85 per cent reduction in the deployment of rooftop solar schemes.

The sector had hoped the Government would listen to its request to drop the huge increase in business rates affecting rooftop solar from next month.

Some 44,000 solar “microgenerators” currently exempt from business rates could be faced with a bill of hundreds, or even thousands, of pounds.

Leonie Greene, of the Solar Trade Association, said: “Fair to say we are dismayed. We are facing an extreme business rate rise of up to 800 per cent. Listening to what the Chancellor said today, there was no mention of energy apart from oil and gas. I have to say we are astonished because deployment of solar is at a six-year low.

“This is slightly less than helpful for the British solar industry,It’s absurd. Energy tax policy is going in the opposite direction to how we know energy needs to change and how it is changing.”

The tax hike affects businesses that install solar panels and use the electricity themselves. But Ms Greene said consumers would end up paying more for their energy because of the overall downturn in the industry, which she said was also being “shut out” of the wholesale power market.

She added: “That is crazy because it is the cheapest and most popular source of energy. What that means is consumers are paying more. We are taking away the competitive pressure solar has put on other technologies.

“We need something to change for the solar industry. We are just trying to get a level playing field with fossil fuels.”

James Court, head of policy at the Renewable Energy Association, said technologies like solar “are unstoppable”, but he warned: “The UK is going to be left behind while the rest of the world is steaming ahead with renewable deployment. Solar and onshore wind are potentially already cheaper than new gas and certainly cheaper than new nuclear, so we are locking ourselves into a overly ‘fossilised’ and more expensive energy future.”

Other key decisions affecting renewable energy, such as the price levied on carbon emissions by big companies after Brexit, were also put off until later, creating uncertainty that could dissuade potential investors.

ClientEarth, a group of environmental lawyers, that has twice successfully taken the Government said the Budget showed Mr Hammond had “failed to grasp the severity of the UK’s air quality crisis”.

James Thornton, ClientEarth’s chief executive, said: “Despite being ordered twice by the courts to take urgent steps to tackle the country’s air pollution crisis, it seems the Treasury has still not grasped the urgency of the situation.”