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Study: A Tesla Powerwall pays for itself after nearly 40 years (Update)
The Tesla Powerwall promises to power your home in a more efficient, green way than traditional energy options, all for a manageable cost. The Institute for Energy Research looked into the numbers and found that it would take 38 years for the Powerwall to pay for itself if your home isn't already hooked up with the proper solar-power connections. If your house does have the necessary solar-cell components, it'll take about 31 years for Tesla's Powerwall to break even, IER says.
