August 6, 2019: Tesla has launched a 3MWh ‘Megapack’ scalable utility energy storage system, the company announced on July 29. It is the first product by the company specifically for the utility end of the market.
“This larger battery pack has a 60% increase in energy density over the current Powerpack and boasts up to 3MWh of storage capacity per pack as a result,” the firm said. “Using Megapack, Tesla can deploy an emissions-free 250MW/1GWh power plant in less than three months on a three-acre footprint — four times faster than a traditional fossil fuel power plant of that size.”
The Megapack will be used by Pacific Gas and Electric Company in California once approval is granted from the state’s Public Utilities Commission.
Under the project, Tesla’s battery-powered utility installation will store 182.5MW of excess solar or wind energy to supplement power at peak grid times, replacing natural gas peaker power plants.
The world’s largest lithium battery, the Tesla Powerpack, was installed in Hornsdale, South Australia, by Tesla in 2017. Tesla says the facility saved almost $40 million in its first year.
In its first Powerpack installation in American Samoa 2016, Tesla combined a 1.4MW utility-scale solar installation with 6MWh of battery storage consisting of 60 Tesla Powerpack utility and commercial scale batteries.