“Wind power varies depending on the time of day,” said Mugo Kibati, chairman of the Lake Turkana Wind Power Project. “Your typical windfarm would have 25-35% utilisation capacity. Lake Turkana will be 62% utilisation capacity.”
New onshore windfarms are now the cheapest way for a power company to produce electricity in Britain, according to Bloomberg New Energy Finance (BNEF). Costs have dropped to $85 (£55) per megawatt hour (MWh) compared with the current costs of about $115 for constructing coal or gas-fired plants, its analysis found.
Researchers from Harvard University report that they have tested a “flow battery” that uses cheap and abundant chemical elements, can be operated with plastic components, will not catch fire, and can operate at 99% efficiency.
The storage problem has consistently been held against investment in solar and wind energy, but a safe, cheap and capacious technology could change the economics of renewable power generation.
Beijing and 10 other Chinese cities, as well as more than a dozen metropolitan US areas, have announced new pledges to cut pollution.
“This is a big deal,” Eric Garcetti, the mayor of Los Angeles told the Guardian. “It is the heavy hitters. It is the biggest emitters, and it is the folks who are coming ready to act.”
The draft Delhi Solar Policy mandates solar rooftop installations for government buildings and for commercial and residential buildings that are constructed after September 1 this year.
“The Ministry of New and Renewable Energy should endorse a similar solar rooftop policy and make it mandatory for the central government buildings to encourage installation,” said Bhushan.
Pioneering technology to deliver the cheapest, small-scale concentrated solar power plants in the world could revolutionise the renewable energy market
These heliostats, or mirrors to concentrate the sun, in a field near Stellenbosch in South Africa could become the most affordable, small, plug-and play solar solutions in the world.
On Saturday, July 25, Germany set a new national record for renewable energy by meeting 78 percent of the day’s electricity demand with renewables sources. Renewable sources accounted for 27.8 percent of Germany’s power consumption in 2014, up from 6.2 percent in 2000.
The future is grim for private holdings in fossil fuel companies over action – or inaction – around climate change. Private investors stand to lose $4.2tn (£2.7tn) on the value of their holdings from the impact of climate change by 2100 even if global warming is [...]
A commitment by China to limit a rise to 2C would create 2m jobs, the analysis says.
Major economies would boost their prosperity, employment levels and health prospects if they took actions that limited global warming to 2c, according to the first analysis of emissions pledges made before the UN climate summit in Paris later this year.
Researchers have obtained the record-breaking efficiency of 22.1 percent efficiency on nanostructured silicon solar cells. An almost 4 percent absolute increase to their previous record was achieved by applying a thin passivating film on the nanostructures and by integrating all metal contacts on the back side of the cell.
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