What is Tamil Nadu’s wind power capacity? What about national wind energy capacity? What does repowering and refurbishing of wind turbines mean? Why are wind energy generators opposing the new policy of the Tamil Nadu government?

A solar collector (26) includes: an outer tube (64) of circular cross-section, closed at one of its ends, an absorption layer (52) arranged inside the outer tube (64), for absorbing solar radiation (Rs), and a heat pipe (56) including a hot part (58) laid out inside the outer tube (64), a cold part (60) arranged outside the outer tube (64), and a reservoir (62) containing a heat pipe fluid (63) and extending over the hot part (58) and the cold part (60). The outer tube (64) is hermetically closed around the heat pipe (56) at the other of its ends, a vacuum being formed inside said outer tube (64). For the hot part (58) of the heat pipe (56), the reservoir (62) is applied at least locally against the absorption layer (52).

A system comprises an injection well for accessing a reservoir containing a native fluid comprising a hydrocarbon. The reservoir is located below one or more caprocks, is at a first temperature, and is accessible without using large-scale hydrofracturing. The system further includes a production well in fluid communication with the reservoir, a supply apparatus configured to feed a non-water based working fluid at a second temperature that is lower than the first temperature through the injection well to the reservoir. The working fluid mixes with the native fluid to form a production fluid comprising at least a portion of the working fluid and at least a portion of the hydrocarbon at a third temperature that is higher than the second temperature. An energy recovery apparatus in fluid communication with the productions well converts energy contained in the production fluid to electricity, heat, or combinations thereof.

The Russian Prime Minister Dmitry Medvedev has amended Russia’s federal law on the electric power industry. Ordinance No47 lays out a number of measures aiming to stimulate renewable energy sales in the national retail market.

Renewable Energy Generation Ltd., a British low-carbon asset developer backed by BlackRock Inc., will build six waste-to-power plants with Caterpillar Inc. and Finning U.K. Ltd. in an expansion of plans published last month.

It's not just renewables that are driving down emissions.

The Severn Barrage could create 50,000 jobs and provide 5% of the UK's electricity needs. Critics say we can do better than that.

Energy Generation

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