In this week’s top stories: News that Tesla is doubling Powerpack energy capacity with the Gigafactory’s new battery cells, Toyota reveals a $27,100 price tag for its Prius Prime plug-in hybrid, details on SolarCity/Tesla’s upcoming ‘Solar Roof’, and much more.

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We kick off this week’s top stories with news that Tesla is doubling the energy capacity of the Powerpack with new battery cells from the Gigafactory. The company also reveals plans to double the size of the Fremont factory for Model 3 as it delivers a record-breaking 24,500 vehicles last quarter. And more details on Tesla/SolarCity’s ‘Solar Roof’ that is said to be ‘very similar’ to Forward’s solar roofing.

Toyota also announces specs and pricing for its Prius Prime plug-in hybrid, and Mercedes’ CEO talks about expectations for the company’s new all-electric EQ brand.

These and the rest of this week’s top stories below:

Tesla |

EV news |

Solar |

This week’s top videos |

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