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Why is Energy Important?


Electricity is a necessary, although not sufficient, requirement for modern economic and social development.  Electricity opens the door to a host of technologies that promote education, public health, and economic development, such as emissions-free light, refrigeration, and communication devices.  Without electricity, communities are unable to participate in the benefits of modern advances and are left isolated and literally in the dark....

What is Power? What is Energy?


Power, given in watts (W), kilowatts (kW) or megawatts (MW) is a rate of energy use. By anology, power is equavalent to the rate at which a car travels such as miles per hour (mph) or kilometers per hour (kph).

Energy, given in watt-hours (Wh), kilowatt-hours (kWh) or megawatt-hours (MWh) is a quantity that can do useful work, such as light up a lightbulb. By analogy, energy is equivalent to the quantity of miles or kilometers travelled by a car.

Appliances consume energy, not power, so we are most interested in energy produced and consumed over time.

To calculate energy produced by a generator, you multiply the power of the generator by the time of production: Energy = Power * Time. For example, blueEnergy's turbine produces 1 kW of power in a 13 m/s wind. During one hour of production at this rate, the turbine produces 1 kWh of energy (1 kW * 1 hour = 1 kWh).

Similarly, to calculate the energy consumed by an appliance, or load, you simply multiply the power rating of the appliance by the time of consumption. For example, a 13 W light bulb running for 80 hours will consume approximately 1 kWh (13 W * 80 hours = 1,040 Wh ~ 1 kWh).

For more information about the basics of energy systems, please visit Home Power.



What can you do with 1 kWh?


1 kWh of energy is equivalent to:

80 hours of light!

20 hours of vaccination storage

40 hours of radio

30 hours of television

Featured:

blueEnergy QuickFacts:

Number of Installations:
8
Number of Communities Served:
6
Total Number of Beneficiaries:
1,500
Installed Capacity (kW):
7.5
Number of Local Employees:
14
Total Number of Historical Volunteers:
+85
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:last updated - November 2007
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