Energy

The city aims to add more electric chargers and to convert its bus fleet to meet its emissions-reduction goals

Radioactive plutonium is crucial for keeping this and other power-hungry deep-space missions warm and working for years on end

Originally published in August 1908

The system works like noise-cancelling headphones but fits over an open window. Christopher Intagliata reports. 

As utilities turn off power to prevent wildfires, more homeowners are looking to install battery backup systems

Originally published in May 1967

Pumped storage hydropower could store intermittent energy from wind and solar power to de-carbonize the nation’s electricity supply

The rush to complete concentrating solar power projects led to multiple reliability problems

A new report says that only six of 46 clean energy sectors are making enough progress to limit warming to under 2 degrees Celsius

The fuel is increasingly uncompetitive with cheaper natural gas and renewable energy

The switch from coal to gas has driven down CO₂ emissions, but leaks negate much of those gains in the short term

A new device could open more areas to wind production by using stationary airfoils instead of twirling turbines