Lightsource bp signs 1GW inverter supply deal with Siemens

Facebook
Twitter
LinkedIn
Reddit
Email
Sheep graze under First Solar modules at a Lightsource bp solar farm. image: Lightsource bp.

Solar PV developer Lightsource bp has signed a deal with industrial manufacturing company Siemens for a 1GW supply of solar inverters to be deployed on Lightsource’s US PV projects.

The companies signed a Volume Frame Agreement (VFA), under which Lightsource has committed to purchase 850MW of Siemens central inverter systems over the next two years, with the option for an additional 200MW.

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

The inverters provided will be predominantly rated at 4.3MW – 4.7MW, and include gas-insulated switchgear, step-up transformers and auxiliary power stations. Siemens will provide commissioning and installation support for the projects, which will be located in the Midwest and Southeast US.

Aside from the recent VFA, Siemens expects to ship a further 185MW of inverters to Lightsource bp over the course of this year.

Rachael Legg, chief procurement officer at Lightsource bp, said: “This procurement deal is a testimony to Lightsource bp’s exponential growth in the United States, and our confidence in Siemens’ technology. To reach our worldwide goal of delivering 25GW of developed solar by 2025, we continue to strategically invest in the products that will support our success.”

Since 2019, Lightsource said that it has over 3.2GW of solar PV deployed or under construction across 11 states in the US. In addition to this, it has other long-term US supply deals in place, including a 4GW module procurement plan with First Solar from 2026-28.

“The US solar industry is poised for historical growth, with the Inflation Reduction Act (IRA) offering tailwinds toward delivering 30% of our country’s electricity by 2030,” said Kevin Smith, CEO of the Americas at Lightsource bp. “Executing significant long-term procurement agreements with bankable, world class suppliers like Siemens enables us to meet this urgent demand for sustainable, affordable energy and deliver on Lightsource bp’s industry-leading growth plans.”

The US solar industry has had a turbulent few weeks. Ongoing disputes over the anti-dumping/ countervailing duty import tariffs have been back and forth in Congress, with the latest development seeing the White House threatening to veto any move that would reinstate retroactive tariffs for the last year.

This week, a move by Republican representatives to introduce a ‘Limit, Save, Grow Act’ that would significantly curb federal support for renewable energy brought in under the IRA was met with condemnation by solar industry trade bodies.  

Read Next

October 20, 2026
Solesca has released the second version of its software, which includes the ability to map the terrain for a proposed PV installation site.
October 20, 2026
NYSERDA has announced its allocations of US$200 million to expand access to affordable solar energy across New York state.
October 20, 2026
The South Australian government has selected four solar and wind proposals totalling almost 13GW in the Whyalla West release area, west of the steelmaking city.
October 19, 2026
Independent power producer (IPP) Swift Current Energy has filed a lawsuit against thin-film cadmium telluride (CdTe) solar module manufacturer First Solar in the New York County Supreme Court.
October 19, 2026
Solar PV manufacturer Qcells has unveiled new, US-produced versions of two residential AC solar panels, Q.TRON AC and Q.PEAK DUO AC, by the end of 2026.
October 19, 2026
The skilled worker shortage was one of the key discussions from solar manufacturers at last week's PV CellTech USA Conference.

Upcoming Events

Solar Media Events, Upcoming Webinars
October 21, 2026
2pm AEDT
Solar Media Events
November 3, 2026
Málaga, Spain
Solar Media Events
November 24, 2026
Warsaw, Poland
Solar Media Events
February 2, 2027
London, UK
Solar Media Events
April 20, 2027
Istanbul, Türkiye