A Los Angeles consultant to health clubs and an advocate of greening them, says it appears the payback period for electricity-generating exercise equipment is about 15 years -- two to three times the machines' life span.
Most users normally generate between 50 and 150 watts while working out which is enough energy, if stored to power a mobile phone for a week. The electricity generated is used to help power the lights, fans, stereo and flat screen TVs in the gym.
The gym had generated 36 pc of its own electricity or 37,000 Kilowatt hours equal to 74,000 pounds of carbon emissions, 81,400 miles not driven and 15 acres of trees planted.
Most users normally generate between 50 and 150 watts while working out which is enough energy, if stored to power a mobile phone for a week. The electricity generated is used to help power the lights, fans, stereo and flat screen TVs in the gym.
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