Wind power is to be said unreliable because due to the unpredictabillity of wheather, turbines typically generate only about one-fifth of the energy they’d make if they actually ran. But energy planners have devised tactics to make wind power reliable.
One of the best way is to construct grid connections between different regions of the U.S. Many wind farms are interconnected through the grid and about one-third of the electricity they generate can be counted on as a reliable source of around-the-clock power. A study of the University of Delaware published this spring concluded that a offshore grid, connecting wind generators along the East Coast could provide relatively stable output. So utilities can plan to shunt surplus power generated in one of the country to areas that need it. Over a simulated five-year period, power never petered out entirely.
However wind power is intermittent and the saviest grid connections have limits. If wind can supply about 30 percent of the planet’s electricity by 2030 so power sources like nuclear, hydropower and solar will be needed as supplements. So it might not a good idea to place all bets on wind. But with the latest turbines able to generate pollution-free electricity at less 5 cents per kilowatt-hour, it wouldn’t be smart to let wind go by the wayside while we invest in less sustainable fuels.
(Popular Mechanics Magazine)
Electric vehicles have been long handicapped for long-distance travel by the limited battery power. But now Mira EV has created a world record with completing 1000 km run on a single battery charge non-stop, powered by Sanyo’s lithium-ion battery systems. The long marathon, organised by Japan Electric Vehicle Club, took place on the world’s longest race course in Japan and was accomplished by a relay team of 17-auto-racers from a training school in Ibraki.
Mira EV had already once run for 555,6 km nonstop without recharging last november. But now traveling for 27.5 hours at 40 km/h average speed, the trail run by Mira EV was powered by putting together 8320 cylindrical lithium-ion 18650-type batteries.
It is a fantastic record. But a speed of 40 km/h is rather low. Maybe the average consumer is more happy to have an electric car which can cover that 1000 kms at 80 km/h average speed with a single charge. However the battery technology is going to improve dramatically in the future, which will make electrics competitive with ICE vehicles.
European aerospace giant EADS wil present a hybrid aircraft which runs 100 percent on algae fuel. It is a world premiere at the Berlin Air Show (ILA) that runs from June 9 to 13.
Algae, a slimy fast-growing and full of fat is quickly gaining ground as a potential. It has also potentially useful for its albility to gobble up carbon dioxyde, a greenhouse gas, while living happily in places not needed for goods.
EAD has high hopes for algae, said Jean Botti technical director. ” We soon need an alternative to kerosene. If 10 percent of our fleet is flying with biofuel, we would be extremely happy.’