from The American Heritage® Dictionary of the English Language, 4th Edition
- n. A unit of electric energy equal to the work done by one kilowatt acting for one hour.
from Wiktionary, Creative Commons Attribution/Share-Alike License
- n. a unit of electrical energy equal to that done by one kilowatt acting for one hour
- n. a “unit” of electrical consumption by which domestic consumers are charged
from The Century Dictionary and Cyclopedia
- n. The energy developed in one hour by a kilowatt of power or activity: a practical unit of energy.
Sorry, no etymologies found.
The work of such a current for one hour is called a _kilowatt-hour_, and in our cities, where electricity is generated from steam, the retail price of a kilowatt-hour varies from
In the paper, they project batteries that cost $250 per kilowatt-hour, which is less than half of today's prices.
The Leaf or comparable EV operating on electricity at the national average of 11 cents per kilowatt-hour will cost 2.6 cents per mile.
In Palo Alto, California, more than one in five residents participate in PaloAltoGreen, a voluntary renewable-energy program that costs just 1.5 cents more per kilowatt-hour.
The report, validated by the independent Illinois Commerce Commission ICC, notes that power produced by Tenaska will cost 21.2 cents per kilowatt-hour, which is roughly 500% higher than current wholesale electric prices in the Midwest.
Last week a Minneapolis firm called TenKsolar announced that it reckons it can soon cut the cost of rooftop solar power in sunny locations to as little as eight cents a kilowatt-hour—which is almost competitive with conventional electricity.
But if wind energy doesn't significantly reduce carbon dioxide emissions, then critics can easily challenge the industry's hefty subsidies, which include the federal production tax credit of $0.022 for each kilowatt-hour of electricity.
According to estimates by Dilip Warrier , an analyst at investment bank Stifel Financial Corp., A123's cost of building batteries is about $1,000 per kilowatt-hour, while some Asian manufacturers are bidding as low as $400.
A company spokesman says at this point "it's fairly meaningless" to provide a general dollar figure per kilowatt-hour, because the company's factories are not yet fully utilized.
That generator is a greater concern: The onboard electricity - used to run lights, fridges, exhaust hoods, microwaves and air conditioning - is likely to be dirtier per kilowatt-hour than the electricity powering a restaurant.