Solar and wind energy may be nice, but how can we store it_ _ ncpr news

Renewable energy like solar and wind is booming across the country as the costs of production have come down. C gastronomie traiteur avis But the sun doesn’t always shine, and the wind doesn’t blow when we need it to.

A company called SolarReserve may have found a solution: It built a large solar plant in the Nevada desert that can store heat from the sun and generate electricity for up to 10 hours even after sundown.

You can see the Crescent Dunes Solar Energy Plant from miles away. Electricity water analogy animation There’s a 640-foot-tall tower surrounded by 10,347 mirrors. Gas cap light The heliostats, as they’re technically called, are arranged in a circle that is 1.75 miles across. Gas key staking tool They direct heat from the sun to the top of the tower, which glows white-hot.

He says the key to the plant’s ability to store energy is molten salt. 76 gas station jobs You can’t see this special kind of salt because it’s contained in a system of pipes and insulated storage tanks.

He says the molten salt has to remain above 450 degrees Fahrenheit to stay liquid. Electricity song omd It’s sent up the tower to the glowing tip, where it’s heated further. Gas leak los angeles When the salt comes back down, it is 1,050 degrees.

The molten salt is used to make steam to power a generator. Gas prices in texas 2015 The facility can continue to produce electricity for up to 10 hours after the sun goes down. Gas natural fenosa Smith says that flexibility is very important to the local utility.

“That’s the whole concept here is that this facility would operate just like a natural gas, or a coal or nuclear facility — turn us on and off when they want,” he says. M gasol “We have energy in storage so that we can generate at night.”

There was a problem with the plant briefly last year. Gas hydrates are used During a test, observers recorded a video of birds flying into heat from the mirrors and being incinerated.

The plant is on federal Bureau of Land Management property, and the agency says the company fixed the problem by adjusting where mirrors are pointed at certain times. Gas prices going up to 5 dollars The BLM says biologists have documented fewer than five bird deaths a month since then.

Executive Director Laura Cunningham says she supports solar. Electricity lesson plans year 6 “So we’re in a little bit of an unpopular position of trying to defend solar but then criticizing some solar,” she says. Electricity edison Cunningham says in addition to the bird issue, she believes facilities like this should be built closer to where people live and away from wild areas.

Another issue with this plant is cost. Thitima electricity sound effect The utility NV Energy is buying all the electricity from Crescent Dunes for the next 25 years at 13.5 cents per kilowatt-hour. Electricity jokes riddles That’s much more than the same power would cost from a natural gas plant.

Smith says his company learned a lot from building this first project, and he says subsequent plants will be cheaper. Gas vs electric stove cost That’ll reduce the cost of electricity, because once the plant is built, the fuel is free. Eon gas card top up The ability to store solar power will also add value to the plants.

The challenges of renewable energy are becoming apparent in California, where the state’s ambitious goals are driving a boom in solar power. Hp gas online booking hyderabad Earlier this spring, there was so much electricity on the grid that solar companies were told to turn off their production.

To cope with the higher demand for power in the evening, electric utilities are being required to add energy storage to the grid, which would store the extra electricity that solar farms generate during the daytime.

“What you’re looking at really is best described as a giant scuba tank,” says Steve Crane, pointing to a 25-foot tank in the warehouse of his company, LightSail Energy in Berkeley, Calif.

Then, when electricity is needed, the air is released to drive an electric generator. Was electricity invented during the industrial revolution The hard part has been dealing with all the heat this makes.

“Any air compressor that you use, even a bicycle pump, creates heat,” Crane says. Shale gas in spanish “A bicycle pump will feel warm after you’ve used it for a while.”

A California-based company is using the concept to build Ice Bear, a thermal energy storage unit that can both reduce energy demand and store energy during the night.

An Ice Bear can save up energy in a 450-gallon tank of water, for example, by turning it into ice. Gas tax in texas That energy is used later on, to cool the building next door during the hottest time of the day and into early evening.

“Essentially what we’re doing is we’re shutting air conditioners off during the day, consuming energy at night and displacing that peak load for the utility company,” says Greg Miller, executive vice president of the company, Ice Energy.

Peak load refers to the time of day or year when we’re using the most electricity. J gastroenterol In Fort Collins, Colo., that’s in the summer, between 2 and 7 p.m. Z gas guatemala The Ice Bear brings down the total amount of electricity needed during those busy peaks.

In 2014, the company got its first big order from Southern California Edison for 25.6 megawatts of storage, which is around 1,800 Ice Bear units. Gas pain The California utility won’t disclose how Ice Energy’s thermal storage stacked up to the other companies that also won storage contracts. O goshi judo Ice Energy also has a deal in process on the island of Nantucket, Mass.

In Colorado, there is an important limitation to Ice Bear’s technology. Electricity units of measurement During winter, the demand for air conditioning is low, so there is no need for the Ice Bear’s services. Gas after eating bread Miller says that during cold months, the unit just sits idle.

The Ice Bear, unlike compressed air or molten salt storage, saves up energy for temperature control but can’t feed electricity back onto the grid.