The first carries compressed air, water, communications and a constant supply of electricity to power lights that are intended to simulate daytime and nighttime.
Most of us also heat our houses, and use electricity for the lights, TV, home appliances and even the computer And everyone eats, too, right?
For that you need water and also electricity to power the lights and machines.
After six months without electricity, everything from lights to radios to television sets has been turned back on.
It is needed to make plastics, to fly planes, to propel construction equipment and to turn generators to make electricity that keeps the lights on and your computer humming in your home or office.
By wirelessly connecting the lights, a computer with Enlighted software can adjust the brightness of the light for each cubicle and automatically lower or cut off the amount of electricity going to the lights at different times of the day.
These solid state lights have a 50, 000-hour lifespan and use half the electricity of traditional metal halide street lights.
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At the same time, the EPA now plans to regulate mercury emissions from coal plants that provide the electricity to power half of those lights.
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Results from a global trial of light-emitting diode (LED) street lights confirm that the fixtures can deliver electricity savings of up to 85% over incumbent technologies.
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And I said turn the lights off because I had looked at the electricity bill.
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Most growers stop at 10 lights lest they attract attention with a steep electricity bill.
As a local energy official, Ms Rousseff kept the lights on after a drought in 2001 led to electricity rationing.
With more than 700 patents to his name, Tesla invented radio, the coil transformer, wireless communication, fluorescent lights and the alternating-current motor, which allowed electricity to flow over long distances.
In a Commons statement on 12 July 2011, Mr Huhne said that new investment was needed in nuclear power, renewable energy, and carbon capture and storage to "keep the lights on" despite Britain's rising demand for electricity.
Otherwise, keeping the lights on may prove a challenge since 40% of our electricity is made in gas-fired power stations.
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In January, millions more briefly turned off the lights in their houses to protest against guerrilla attacks on the electricity grid.
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The results showed that residential electricity use actually rose by 8% because people tended to use more lights and keep them on longer believing that the lighting was cheaper.
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Consumers can help by shutting off unnecessary lights and electrical appliances, minimizing the use of air conditioning and delaying laundry and other activities requiring electricity-consuming appliances until later in the evening.
Whatever the reason, the government is likely to reassess its next phase of electricity reform, which includes privatising the generating and distribution companies, in order to persuade New Zealanders that their lights and air-conditioners will not fail again.
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