Three key facts we like from The Immune System and Foreign Invaders: 1  White blood cells known as leukocytes make up the immune system portion of the blood. 2  Leukocytes are divided into three main groups that help protect our bodies: granulocytes, lymphocytes, and monocytes.
The average price people in the U.S. pay for electricity is about 12 cents per kilowatt-hour. (Context: A typical U.S. household uses about 908 kWh a month of electricity.). But there's huge variation from state to state. Here's a map of residential electricity prices, according to the Energy Information Administration. People in Hawaii pay the most for electricity, about 33 cents per kWh. A Hawaiian household whose electricity use was around the national average would have a monthly electric bill over $300.
The price (in megawatt hours) can vary wildly; depending on market and environmental conditions. For example, a heatwave can send wholesale prices skyrocketing to more than $12,000 per megawatt hour â or $12 a kilowatt hour.The rules of the NEM set a maximum spot price of $13,100/MWh for the 2013-2014 financial year.These wild fluctuations are taken into account when determining the electricity prices we pay.he NEM (National Electricity Market) covers New South Wales, Queensland, South Australia, Tasmania and Victoria. While the cost per kilowatt hour of electricity may only have a couple of different pricing points on our electricity bills; for example, peak and off-peak, the wholesale market is a different story.