You have no items in your shopping cart.
Questions about a product?
PAYERNE, Switzerland – A solar plane with wings as wide as a 747 and the power of a small motorboat took to the skies for the first time Wednesday, cruising a mile high at low speeds for nearly 1½ hours in a step toward becoming the first sun-powered aircraft to circle the world.
In its maiden test flight, “Solar Impulse” — designed by Swiss adventurer Bertrand Piccard’s team — completed a series of turns, slip maneuvers and bank angles reaching 5 degrees. Most importantly, it proved able to take off and land.
The team plans to fly it around the world in 2012, the goal being to show that renewable energy can replace fossil fuel.
“There has never been an airplane of that kind that could fly — never an airplane so big, so light, using so little energy,” said Piccard, who in 1999 copiloted the first nonstop round-the-globe balloon flight. “So there were huge question marks for us.”
At a military airport in the Swiss countryside, the plane lifted off at a speed no faster than 28 mph after only a short acceleration on the runway. It slowly gained altitude above the green and beige fields, and disappeared eventually into the horizon as villagers watched from the nearest hills.
The descent was even slower, as the sun-powered craft hovered ahead of the runway for a couple of minutes before touching down to cheers from spectators.
The weather for the maiden flight was sunny, and there was little wind.
India plans to generate 20GW from sunlight by 2020, putting green energy targets of developed nations in the shade.
India has decided to push ahead with a vastly ambitious plan to tap the power of the sun to generate clean electricity, and after a meeting chaired by the prime minister, Manmohan Singh, it wants rich nations to pay the bill.
Although India has virtually no solar power now, the plan envisages the country generating 20GW from sunlight by 2020. Global solar capacity is predicted to be 27GW by then, according to the International Energy Agency, meaning India expects to be producing 75% of this within just 10 years.
Four-hundred million Indians have no electricity and the solar power would help spark the country’s development and end the power cuts that plague the nation. It would also, say some analysts, assuage international criticism that India is not doing enough to confront its carbon emissions. It is currently heavily reliant on highly polluting coal for power.
(more…)
The solar industry says incremental advances have made transformational technologies unnecessary.
The federal government is behind the times when it comes to making decisions about advancing the solar industry, according to several solar-industry experts. This has led, they argue, to a misplaced emphasis on research into futuristic new technologies, rather than support for scaling up existing ones. That was the prevailing opinion at a symposium last week put together by the National Academies in Washington, DC, on the topic of scaling up the solar industry.
Cheaper solar: First Solar’s improvements in manufacturing photovoltaics have helped lead to big drops in cost. A worker at a First Solar factory in Frankfurt, Germany, moves one of the company’s solar panels.
The meeting was attended by numerous experts from the photovoltaic industry and academia. And many complained that the emphasis on finding new technologies is misplaced. “This is such a fast-moving field,” said Ken Zweibel, director of the Solar Institute at George Washington University. “To some degree, we’re fighting the last war. We’re answering the questions from 5, 10, 15 years ago in a world where things have really changed.”
(more…)
Stirling Energy Systems (SES), based in Phoenix, has decreased the complexity and cost of its technology for converting the heat in sunlight into electricity, allowing for high-volume production. It will begin building very large solar-power plants using its equipment as soon as next year.
Sun catchers: This is the latest design of a system for focusing sunlight on a Stirling engine to generate electricity.
Credit: Sandia National Laboratories/Randy Montoya.
The company is currently building a 1.5-megawatt, 60-unit demonstration plant that will use the company’s latest design. Stirling expects to finish that project by the end of the year. It also has contracts with two California utilities to supply a total of 800 megawatts of solar power in Southern California. The first of the plants that will supply this power could be built starting the middle of next year, pending government permits and loan guarantees from the U.S. Department of Energy (DOE).
The projects are part of a resurgence in what’s known as solar thermal power. Various solar thermal technologies were developed starting in the 1970s, but a breakdown in government funding and incentives caused them to stall before they reached a scale of production large enough to drive down costs and allow them to compete with conventional sources of electricity. “It was a classic problem with solar. The market support to bring solar to high volume wasn’t there,” says Ian Simington, the chairman of SES and chief executive of the solar division of NTR, a company based in Dublin, Ireland, that bought a controlling share of SES last year.
(more…)
