Study: Tesla Powerwall is clearly the most frequently offered in the USA – and the cheapest

Tesla’s energy business with solar modules and roofs as well as stationary batteries from private to industrial scale has to lag behind that with electric cars again and again when time or supply with battery cells is running out. In the first quarter of this year, for example, the installed battery capacity decreased by around 50 percent compared to the end of 2019. In the long term, however, this Tesla business should also be of great importance, and in the second quarter of 2020 battery installations have already recovered significantly. And according to a new US study, no battery storage is offered in the home sector like the Tesla Powerwall.

Large Tesla distance for batteries

EnergySage is a large marketplace for photovoltaic and storage offers in the USA and has now published an Intel report for the period from July 2019 to June 2020, in which consumer queries are evaluated on its website. “The Powerwall 2 from Tesla is the most frequently offered storage option,” says the introduction. The portal has therefore looked at which cordless products are suggested by the providers on its marketplace to inquiring customers.

And the gap from Tesla is remarkably clear here. A good 50 percent of all storage offers were a power wall, according to the data. LG Chem follows a long way behind with just under 30 percent (EnergySage does not give any numbers, it only shows a pie chart for distribution). These two alone account for around 80 percent, and Tesla was offered almost twice as often as LG Chem. The German battery provider sonnen is also represented with a small single-digit share.

The preference for Tesla and LG Chem can also be found in installation data from the funding program for California in recent years, explains the portal. There is at least one simple explanation for Tesla’s dominance: According to EnergySage, the Powerwalls are cheaper per kilowatt-hour than any other storage system on the US market. The second lowest is the price at Generac, which, according to the analysis, is also the smallest provider. Its storage systems (including installation) cost 13 percent more per kilowatt hour than those from Tesla, those from LG Chem are 37 percent more expensive, and the batteries from sonnen cost almost twice as much.

Tesla Powerwall also in Germany

The Powerwall is currently the only one of the Tesla energy products that can be ordered directly on the German website – or at least “pre-order”, as it is called there. The price for a Powerwall unit is 7200 euros, plus 1600 euros for supporting hardware. With a capacity of 13.5 kilowatt hours, that makes around 650 euros per kilowatt hour. A Tesla representative recently said at a German construction trade fair that this was sometimes only half as much as other storage systems. However, the installation costs are added in each case.


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