The world's electricity grids currently make very little use of tidal power, potentially a more continuous and dependable supply than solar and wind power which are intermittent.
Fatih Birol, the IEA's Executive Director, said:“Solar is forging ahead in global power markets as it becomes the cheapest source of electricity generation in many places, including China and India.
Renewables supply more than 26% of global electricity, however they provide only 10% of the energy used for heating and cooling and just over 3% for transport.
Renewables now represent more than a third of total global power provision, overtaking natural gas in the next few years and approaching the pre-eminence of coal as the leading fuel for power generation by 2035.
According to the United Nations Environment Programme(UNEP), lighting accounts for 15 percent of global electricity consumption and 5 percent of greenhouse gas emissions.
The U.N. estimates that buildings account for over half of global electricity usage, about 28% of global carbon emissions and over 10% of potable water consumption.
There are around 450 nuclear power reactors in operation today, supplying about 10 percent of the world's electricity and one-third of all low-carbon electricity.
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