A heat pump uses renewable energy sources by transferring heat from the ground, lake water or the air. The number of heat pumps in Sweden has increased dramatically since the 1990s, which has contributed to less energy being used for heating and hot water in buildings. .
Ethanol research began in the 1980s, and Sweden has been among the world leaders in this field. But the environmental benefits compared with petrol have been much debated since fertile. .
Using hydrogen is another potential means of decreasing carbon dioxide emissions. Among with many other countries, Sweden is looking into the possibility of using hydrogen as fuel, or for electricity or heating. .
So-called passive houses are built without conventional heating systems and are kept warm by the heat given off by their occupants and electrical.
[pdf] Energy in Belarus describes and production, consumption and import in . Belarus is a net energy importer. According to , the energy import vastly exceeded the in 2015, describing Belarus as one of the world's least energy sufficient countries in the world. Belarus is very dependent on Russia.
[pdf] Solar power in Mexico has the potential to produce vast amounts of energy. 70% of the country has an of greater than 4.5 kWh/m /day. Using 15% efficient , a square 25 km (16 mi) on each side in the state of or the (0.01% of Mexico) could supply all of Mexico's electricity. The first power from a giant solar energy park in the desert of northern Mexico will enter the country's electricity grid in April, officials said on Thursday, as the nation aims to burnish its gre.
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