Tesla’s branded solar panels accounted for almost 70% of its California rooftop installs in July

Facebook
Twitter
LinkedIn
Reddit
Email
Tesla continues to shift away from using third party mainstream solar PV panel suppliers as it ramps Gigafactory 2 in in Buffalo, New York state.

Tesla continues to shift away from using third party mainstream solar PV panel suppliers as it ramps Gigafactory 2 in in Buffalo, New York state.

According to the most recent data compiled by ROTH Capital from the California Distributed Generation Statistics (CDGS) and associated contributors, Tesla successfully ramped its own branded residential solar rooftop deployments in California to 68% of total installs in the month of July, 2018, a new record high, helped by residential applications up 17% in the second quarter of 2018, compared to the previous quarter. 

This article requires Premium SubscriptionBasic (FREE) Subscription

Try Premium for just $1

  • Full premium access for the first month at only $1
  • Converts to an annual rate after 30 days unless cancelled
  • Cancel anytime during the trial period

Premium Benefits

  • Expert industry analysis and interviews
  • Digital access to PV Tech Power journal
  • Exclusive event discounts

Or get the full Premium subscription right away

Or continue reading this article for free

PV Tech had previously detailed the rapid shift taking place amongst Tesla’s solar panel suppliers, notably the shift to using panels produced by partner Panasonic using its high-efficiency N-type mono HIT (Heterojunction with an intrinsic layer) cell technology at Gigafactory 2. 

As noted in the chart below, Tesla branded panels accounted for a declining percentage of installations in California from May through June, which was potentially due to manufacturing equipment upgrades at Gigafactory 2.

According to the most recent data compiled by ROTH Capital from the California Distributed Generation Statistics (CDGS) and associated contributors, Tesla successfully ramped its own branded residential solar rooftop deployments in California to 68% of total installs in the month of July, 2018, a new record high, helped by residential applications up 17% in the second quarter of 2018, compared to the previous quarter. Image: PV Tech

However, supply significantly jumped in July, which meant a decrease in supplier from third party suppliers such as Trina Solar, Hanwha Q CELLS and a suite of ‘other’ suppliers.
 
Tesla’s branded panels accounted for around 53% of percentage total in the first seven months of 2018, compared to a total of 18% through 2017.

Tesla recently reported total third quarter 2018 solar installations of 93MW, 11% higher than the previous quarter (84MW), which are the best installation figures since the fourth quarter of 2017, yet lower (107MW) than the prior year period.

Note: The California Distributed Generation Statistics publishes all IOU solar PV net energy metering (NEM) interconnection data from the three large California Investor Owned Utilities (IOUs) which include Pacific Gas & Electric Company (PG&E), Southern California Edison Company (SCE), and San Diego Gas & Electric Company (SDG&E). 

California Distributed Generation Statistics also publishes all IOU data from the California Solar Initiative incentive program and other publicly available incentive program data sets.

Read Next

October 2, 2026
Germany is on course to produce over 600,000 tonnes of solar PV waste material by 2030, potentially worth billions in aluminium and silver.
Premium
October 2, 2026
PV Talk: PV Tech spoke with Dana Hankey about restarting ACI Materials' silver paste production for US solar manufacturing.
Sponsored
October 1, 2026
To explore the technology, design philosophy, and real-world implications of this latest innovation, we spoke with Zander Yuan, Director of Product & Technology at Tongwei Solar.
September 30, 2026
Kern County has approved US independent power producer (IPP) Terra-Gen’s 600MW solar and 4GWh battery storage project near California City.
September 21, 2026
A Chinese satellite carrying prototype heterojunction solar modules produced by the leading PV manufacturer JA has been launched into Earth’s orbit.
September 17, 2026
SEG Solar has started commercial-scale production of heterojunction (HJT) modules at its second US manufacturing facility in Tomball, Texas.

Upcoming Events

Solar Media Events
October 13, 2026
San Francisco Bay Area, USA
Solar Media Events
November 3, 2026
Málaga, Spain
Solar Media Events
November 24, 2026
Warsaw, Poland
Solar Media Events
February 2, 2027
London, UK