After Giga, Mega: Tesla launches 3MWh scalable utility ESS

One of Tesla's first big Powerpack installations, completed in 2016 in American Samoa, combined a 1.4MW utility-scale solar installation with 6MWh of battery storage in the form of 60 Tesla Powerpack utility and commercial scale batteries. Image: Tesla.

Following recent success for its stationary storage division, Tesla has launched a 3MWh ESS ‘Megapack’, promising a quick turnover even for gigawatt-scale projects.

‘The Tesla Team’ posted a blog on the company’s website yesterday to "introduce" the Megapack, specifically marketed as utility-scale energy storage. Each pack is assembled with 1.5MW inverter capacity and up to 3MWh of storage, with AC interface adapted from the commercial Powerpack and claiming a “60% increase in energy density”.

“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 blog said.

The packs can be DC-connected to solar farms and will operate using Tesla’s own Powerhub monitoring and control platform. The Silicon Valley company has also developed its own energy trading platform – which as you might expect, is automated.

Although Powerpack has already been deployed at large-scale, this is the company’s first product specifically for the utility end of the market. The company mentioned that Megapack will be used in the forthcoming 1,200MWh Moss Landing fossil fuel peaker plant replacement project in California in the blog.

Recently, rival Saft launched its own expanded containerised storage product in 2.5MWh 'blocks', which company representative Michael Lippert told was in direct response to growing customer demand for "energy as well as power"

The announcement that during the financial quarter just gone, Tesla went beyond 50,000 cumulative residential Powerwall deployments worldwide and a company record 415MWh of combined stationary battery energy storage deployments during the quarter, was tempered by a continued slide in performance for its solar division and a continued wait for the much-vaunted roof tiles.

Tesla staff posted this rendering on the company's blog. Image: Tesla.

Stay up to date with the latest news, analysis and opinions. Sign up here to the Newsletter.