Since way back when Romans ruled, ACs have evolved very little. Several companies are now on the case. How cool is that?
A tiny country with little space to spare looks to its water reservoirs to expand its use of renewable energy.
There isn’t much extra space in Singapore, since the entire country is smaller than New York City and fully developed. So when the government decided to install more solar power to help meet the area’s energy needs, they turned to water instead of land: When finished, the country’s new power plant would be the world’s largest floating solar farm.
If the Solar Wind Downdraft Tower is ever built in the Arizona desert, it truly will be a wonder of the modern world. At 2,250 feet, it would be taller than the new Freedom Tower in New York (1,776 feet), and 1,000 feet higher than the Empire State Building. It would have 120 huge turbines at its base, and enough pumping capacity to keep more than 2.5 billion gallons of water circulating. And it would have colossal power output: the equivalent of wind turbines spread over 100,000 acres, or as big as the Hoover Dam.
“I guess the word now is ‘disruption.’”
Does it bother you to distraction when you see someone wasting electricity? The LightsOut app is for you to tattle on others.
Choosing solar power no longer has to be a sacrifice for the sake of the environment. In Germany, Italy, and Spain, installing your own solar panels can now actually save money.
A report released by European renewable energy consulting firm Eclareon shows that solar energy has reached “grid parity.” In other words, over the full lifetime of the equipment, the total cost of owning and operating rooftop solar panels is about the same as buying electricity from the grid.
There’s little need to be wary of a nighttime stroll though a park in Cambridge, England. During the day, particles in the surface of the path absorb UV light. In the evening, they release that energy again. The result is a beautiful effect that its creators call “Starpath.”
The killer app? That would be solar panels plus batteries. When you put the two together, homeowners don’t need utilities anymore, and perhaps not the grid either.
"Let’s be innovative and free ourselves from the old habits and beliefs that prevent us from inventing a better future."
The world has a challenge on its hands: As people rise out of poverty, their energy consumption rises, too, putting pressure on everyone around the globe to offer game-changing solutions to the greenhouse-gas crisis. These folks are meeting the task. Read more>
We’ve gone from one small collection of turbines in 1975 to nearly 1,000 wind farms—capable of generating enough electricity for 15 million homes.
Designed to rise 1,000 feet in the air and deliver electricity to the ground, the Buoyant Airborne Turbine is a blimp on a mission. - A Wind Turbine Inside A Floating Blimp Can Bring Power Anywhere