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Tesla solar deployments plummet while energy storage rises

The nation’s largest residential PV installer deployed only 109 MW of solar during Q3, its lowest level in many years, but it did install 110 MWh of battery storage.

Elon Musk has a lot going on these days. The start of mass production of Tesla’s low-cost Model 3 electric vehicle (EV) has experienced major hiccups, resulting only 222 rolling off the production lines during Q3. Additionally, Tesla is busy supplying hospitals in Puerto Rico with power, building what is perhaps the world’s largest battery system in Australia, and preparing to roll out an electric semi later this month.

What appears to not be a priority for Tesla is growing or even maintaining its market share in the distributed solar space. The company deployed only 109 MW of PV systems during Q3 2017, its lowest level in many years.

In its quarterly letter to investors Tesla excused this decline by noting that it was pulling away from lower-margin commercial and industrial solar deals. However such a low level indicates a fall in residential solar deployment as well and can also be seen in light of the contraction of the national residential solar market beginning in late 2016.

Both Tesla/SolarCity and Vivint pulled back from ambitious growth paths last year, which was followed by a decline in the overall residential solar market, with more business going to the “long tail” of local installers. Of the big three residential solar companies only Sunrun continues to grow, and while the company has not released quarterly results for Q3, it is now in competition with Tesla to be the largest residential solar provider.

Tesla’s approach to sales may be a major factor, and the company has moved away from the door-to-door model previously popular with SolarCity and other large installers. And while Tesla says that increasing numbers of its EV customers buying PV and battery storage systems in its stores “validates its strategy”, this must be seen in the context of dramatically reduced sales volumes.

Tesla is also continuing the shift from third-party solar to direct sales, in line with national trends. The company estimates that direct purchases represented 46% of its sales during the quarter, and forecasts that this will represent more than 50% of its solar business next quarter.

Read full article at PV Magazine