Insight: How renewable energy may be Edison's revenge

Insight: How renewable energy may be Edison's revenge | Reuters:

'via Blog this'

At the start of the 20th century, inventors Thomas Alva Edison and Nikola Tesla clashed in the "war of the currents." To highlight the dangers of his rival's system, Edison even electrocuted an elephant. The animal died in vain; it was Tesla's system and not Edison's that took off. But today, helped by technological advances and the need to conserve energy, Edison may finally get his revenge.

The American inventor, who made the incandescent light bulb viable for the mass market, also built the world's first electrical distribution system, in New York, using "direct current" electricity. DC's disadvantage was that it couldn't carry power beyond a few blocks. His Serbian-born rival Tesla, who at one stage worked with Edison, figured out how to send "alternating current" through transformers to enable it to step up the voltage for transmission over longer distances.

Edison was a fiercely competitive businessman. Besides staging electrocutions of animals to discredit Tesla's competing system, he proposed AC be used to power the first execution by electric chair.