Solar power

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Thinking of going solar? Prices are approaching the cost of grid electricity, but only in some places – so far. joncallas/flickr

When will rooftop solar be cheaper than the grid? Here’s a map

When will residential solar be cheaper than the cost of power from the grid? This point of 'grid parity' is a moving target but moving closer in a number of places.
Solar power in suburbia: what’s not to like? Gray Watson

Utilities, solar energy and the fight for your roof

Utilities are pushing back against the spread of rooftop solar power and charging bigger fees to solar homes. Who is right in this solar-versus-utilities fight?
A solar array goes up in New York. Is this the best place to locate solar, given the relatively clean New York state grid? Lucas Braun

To cut emissions faster, U.S. should ditch tax credit-based subsidies for renewable energy

The wind and solar industries scored a huge win by getting extended tax credits, but research shows this isn't the best policy for lowering emissions through renewable energy.
South Africa has installed solar water heaters in low cost housing areas. It should be installing solar PV for energy. Shutterstock

How South Africa can spread renewable energy to low income areas

South Africa has been slow to adopt renewable energy sources. One option, which has proved successful elsewhere, would be to install solar photovoltaic panels on rooftops in low-income areas.
Small solar panel installations can provide electricity and jobs, while not adding to emissions. Manukrishna CK/Praveen R/Wikimedia Commons

India is focused on energy and poverty, but it can still sign a global climate deal

Much of India's huge population is still without electricity, perhaps making climate action a tough sell. But India's vision for green development chimes well with the world's climate agenda.
Renewable energy developers choose sunny locations, which can be near protected lands. jsmoorman/flickr

Can we expand solar power dramatically without damaging protected lands?

Study shows that many of the utility-scale solar power plants in California have been placed near protected and environmentally sensitive lands.

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