Demand for coal and oil will peak in 2020 as the renewable energy revolution gathers pace and undercuts fossil fuels on price, according to a new report.

It found that significant declines in the cost of solar panels and electric vehicles would reduce demand for fossil fuels, warning investors that relying on current industry projections might be a mistake that would leave their money “stranded” in worthless projects.

Cheaper electric vehicles, for example, could cut the market for oil by two million barrels a day by 2025 – “the same volume that cause the oil price collapse in 2014-15”, the report said.

Its authors, from the Grantham Institute of Climate Change and the Environment at Imperial College London and the Carbon Tracker think tank, suggested their projections could actually underplay the speed of the switch to a low-carbon economy.

Technological improvements and the risks posed by climate change were building momentum with rising levels of investment, research and public support in and for renewables.

And that, the report said, “could result in a global explosion of low-carbon technology deployment in the coming decades”.

The cost of solar panels has fallen by 85 per cent in seven years with battery costs dropping by 73 per cent over a similar period, while demand for electric vehicles has been growing by about 60 per cent each year.

Solar electricity was on track to become “materially cheaper than alternative power options globally”, the report said.

“In such a scenario of rapid change, the mass stranding of downstream fossil fuel assets is highly likely,” it said.

The experts predicted the growth in demand for coal and oil would stop from 2020 and begin to fall.

Solar energy alone could provide 29 per cent of global power generation by 2050, resulting in the total phasing out of coal and leaving natural gas with a market share of just one per cent, it added.

The figures are in marked contrast to those produced by major oil companies.

Solar Technology in the UK Show all 7 1 /7 Solar Technology in the UK Solar Technology in the UK Roofs tiled with photovoltaic solar energy panels receive maximum sunlight exposure in Dyfi Eco Park, Machynlleth, Wales. These panels are made up of photovoltaic (PV) cells. PV cells convert sunlight into electrical energy Getty Solar Technology in the UK Jake Beautyman installs solar panels on a barn roof on Grange farm, near Balcombe. The installation is part of an initiative by local residents in Balcombe to encourage more people to use renewable energy rather than energy based on carbon such as fracking. The initaitive is called Repowerbalcombe and is supported by the charity 10:10 Getty Solar Technology in the UK The Solar array of community project Low carbon Gordano, a Solarsense renewable energy project. Delivering 1,750HWh per annum. Avon, Somerset Getty Solar Technology in the UK The solar panels array on the roof of Oldfield Park Infant School, installed with the support of Bath and West Community Energy a community project. Bath, Somerset Getty Solar Technology in the UK The solar array inverters that monitor and invert the energy made by Brixton Energy Solar who have installed several hundred square metres of solar panels on the roof of Elmore House in the Loughborough Estate in Brixton, London Getty Solar Technology in the UK The solar array inverters that monitor and invert the energy on the roof of Elmore House in the Loughborough Estate in Brixton, London Getty Solar Technology in the UK The 25kW solar panel array on the roof of Knowle West Media Centre. Supported by Bristol Energy, a community-owned energy cooperative, growing Greater Bristol's local green energy supply and making the benefits available to all Getty

One industry estimate puts the total contribution from all renewables to global power generation at just 11 per cent by 2040.

Luke Sussams, a senior researcher at Carbon Tracker, said: “Electric vehicles and solar power are game-changers that the fossil fuel industry consistently underestimates.

“Further innovation could make our scenarios look conservative in five years' time, in which case the demand misread by companies will have been amplified even more.”

The switch to low-carbon technologies would help prevent global temperatures rising to a point where climate change becomes particularly dangerous – generally accepted as between 1.5C and 2C above pre-industrial levels – the report said.

But the researchers stressed that their projections were based not on the need to address climate change, but purely financial considerations.

Ajay Gambhir, senior research fellow at Imperial, said: “Most low-carbon pathways analysis considers what needs to be done to meet ambitious climate targets like 2C.

“Here we’ve looked at what would happen to the global energy system and global temperature if the lowest-cost options are deployed, in light of the latest projections of PV [solar panels] and electric vehicle costs.