Panasonic starts making something at Tesla’s Buffalo plant

Facebook
Twitter
LinkedIn
Reddit
Email
Panasonic has started making its high-efficiency HIT (Heterojunction with Intrinsic Thin layer) solar cells at Gigafactory 2 in RiverBend, Buffalo, New York State but actual modules like these not in production until 2019. Image: Panasonic

According to brief reports citing Tesla’s CTO, Panasonic has started making its high-efficiency HIT (Heterojunction with Intrinsic Thin layer) solar cells at Gigafactory 2 in RiverBend, Buffalo, New York State.

No ribbon cutting ceremony, webcast or speeches, nor press releases or new images of outside or inside the facility seem to exist but a few words from Tesla’s CTO, JB Straubel. 

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

Should solar cell production have started then in itself it is a remarkable feat by Panasonic. Tesla and former SolarCity have proved adept at over-hyping and under-delivering on just about everything to date. 

Considering that it was mid-October 2016 when Panasonic and Tesla said they would collaborate on solar cell and module production at the Buffalo facility, then later ditching SolarCity’s Silevo cell technology for Panasonic’s, no more than 10 months has gone by since that announcement. 

Heterojunction solar cell processing equipment is not an off the shelf item at your local store and due to a major technology and capacity buy cycle in the upstream solar manufacturing sector, lead times for cell production equipment have lengthened to 9 to 12 months. 

Of course the deal with Panasonic could have been made at an earlier time so lead times may not have been an issue but it is more likely that Panasonic may have shipped a small number of idled tools from Japan to Buffalo to meet milestones with new equipment ordered and delivered at later date. 

Not surprisingly the mainstream media reports didn’t cover any of this and even JB’s limited comments were inline with Tesla's culture of vagueness. The one I liked the most was this from the Bloomberg post of an AP (Associated Press) article. 

“By the end of this year we will have the ramp-up of solar roof modules started in a substantial way,” Straubel told The Associated Press Thursday. “This is an interim milestone that we're pretty proud of.”

Indeed, as PV Tech first reported in February, 2017 that Panasonic said it would have the equipment delivered, installed and commissioned and an initial ramp of production started in the summer of 2017.

That didn’t last long as PV Tech later reported Tesla had stated that production of the roofing tiles would not enter mass production at its Gigafactory 2 until the end of 2017.

It should be noted that production of the initial solar roof tile products that grace some of Tesla’s executives homes are being made at the former SolarCity pilot line in Fremont California, with cells shipped supplied by Panasonic from its Malaysian or Japanese plants. 

In another liked quote from JB, Panasonic is expected to ramp the real volume product, solar cells and panels for conventional solar rooftop systems to 2GW at Gigafactory 2, not the 1GW initially planned under the SolarCity/Silevo plans. 

Of course JB noted (not) that the initial Panasonic ramp to 1GW had been pushed back to 2019 and simply failed to say when a further gigawatt of capacity would come on stream. 

At the moment, I can only assume that Panasonic has a small solar cell production line in place to feed the niche roof tile product assembly at Fremont. 

7 October 2025
San Francisco Bay Area, USA
PV Tech has been running an annual PV CellTech Conference since 2016. PV CellTech USA, on 7-8 October 2025 is our third PV CellTech conference dedicated to the U.S. manufacturing sector. The events in 2023 and 2024 were a sell out success and 2025 will once again gather the key stakeholders from PV manufacturing, equipment/materials, policy-making and strategy, capital equipment investment and all interested downstream channels and third-party entities. The goal is simple: to map out PV manufacturing in the U.S. out to 2030 and beyond.
21 October 2025
New York, USA
Returning for its 12th edition, Solar and Storage Finance USA Summit remains the annual event where decision-makers at the forefront of solar and storage projects across the United States and capital converge. Featuring the most active solar and storage transactors, join us for a packed two-days of deal-making, learning and networking.
16 June 2026
Napa, USA
PV Tech has been running PV ModuleTech Conferences since 2017. PV ModuleTech USA, on 16-17 June 2026, will be our fifth PV ModulelTech conference dedicated to the U.S. utility scale solar sector. The event will gather the key stakeholders from solar developers, solar asset owners and investors, PV manufacturing, policy-making and and all interested downstream channels and third-party entities. The goal is simple: to map out the PV module supply channels to the U.S. out to 2027 and beyond.

Read Next

September 8, 2025
German inverter manufacturer SMA Solar is to restart US manufacturing for the first time in ten years.
September 8, 2025
Vaisala has launched a new hail alert system aimed at solar operators grappling with an increasingly costly problem for PV installations.
September 5, 2025
Scientists from Germany and Saudi Arabia have discovered that perovskite thin-film cells are compatible with current industry standard silicon solar cells, which they claim is a “crucial step toward the industrialisation of perovskite silicon tandem solar cells”.
September 2, 2025
The Fraunhofer Institute for Solar Energy Systems (ISE) will build a pilot solar cell line in Germany to support US manufacturer Talon PV’s efforts to establish solar cell capacity in the US.
August 27, 2025
Long-term procurement decisions from the US solar industry could support US solar manufacturing, regardless of changes to federal tax credits, PV Tech has heard.
Premium
August 27, 2025
American Clean Power Association’s MJ Shiao assesses the state of US PV manufacturing in the wake of recent policy developments.

Subscribe to Newsletter

Upcoming Events

Solar Media Events
September 16, 2025
Athens, Greece
Solar Media Events
September 30, 2025
Seattle, USA
Solar Media Events
October 1, 2025
London, UK
Solar Media Events
October 2, 2025
London,UK
Solar Media Events
October 7, 2025
Manila, Philippines