Friends of the Earth has welcomed the announcement that Sainsbury's has increased its effort to cut its carbon emissions.
The leading supermarket chain has installed 69,500 new solar panels across 169 stores in the UK.
According to director of policy and campaigns at Friends of the Earth Craig Bennett, Sainsbury's is now host to the largest solar array in Europe.
He claimed the solar investment will give a "significant boost" to the UK's renewable energy sector.
Mr Bennett added: "Firms across the UK are waking up to the business benefits of using clean British energy from the sun, wind and waves to reduce our reliance on increasingly expensive fossil fuels."
It was suggested the government needs to do more to take advantage of the country's "huge potential" in the renewable sector and aim for a carbon-free electricity market by 2030.
Mr Bennett noted that 85 per cent of the public want the government to force energy companies to use less fossil fuels and more green energy.
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