Tesla Powerwall

Deliveries begin this summer The average home uses more electricity in the morning and evening than during the day when solar energy is plentiful. Without a home battery, excess solar energy is often sold to the power company and purchased back in the evening. This mismatch adds demand on power plants and increases carbon emissions.

Tesla Powerwall Keynote by Elon Musk "The Missing Piece" English and Spanish subtitles added, credit to Luis Gámez for transcribing and translating.

CEO of Tesla Motors, Elon Musk, landed an official message unveiling the Powerwall, a battery designed to power your home. The message came at a convention center powered completely by renewable battery power. The battery unit itself contains the same batteries present in the Tesla electric cars.

Elon Musk does it again It's barely been a week since Tesla unveiled its Powerwall energy system, which scales from residential houses to massive gigawatt-hour utility scale. Not enough time for much to happen, right? Well, apparently people have been waiting for something like this and there's a lot of pent up demand.

Tesla CEO Elon Musk unveiled the company's new foray into the energy market with energy storage devices for residential and commercial buildings at an event in California on Thursday night. "Our goal here is to fundamentally change the way the world uses energy," Musk said. CBC News answers five questions about the newly announced batteries.