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

June 5, 2026
The Western Australian government has allocated AU$17.8 million (US$12.7 million) in its 2026-27 State Budget to build the state's capacity to recycle solar modules and embedded batteries, under its Remade in WA programme.
June 4, 2026
Inox Clean Energy has acquired Vena Energy India's 6GW renewable energy portfolio, expanding its operating capacity and project pipeline. 
June 4, 2026
The opening of this week’s SNEC show in Shanghai was marked by a shared recognition of the need for China’s PV industry to move beyond unchecked capacity expansion and brutal competition, writes Carrie Xiao.
June 4, 2026
As solar imports to the US face increasing restrictions, domestic manufacturers are racing to build upstream production capability. With 66GW of module capacity chasing just 11GW of domestic cells, the supply chain crunch is reaching a critical inflection point, write Moustafa Ramadan and Joe Hennessy.
June 4, 2026
US-based solar manufacturer Thornova Solar has signed a strategic cooperation agreement with PV solutions provider Nextpower to incorporate steel frames into certain modules.
June 3, 2026
Avangrid has completed construction of its 166MWdc Tower Solar project in Oregon and connected the facility to the regional transmission grid.

Upcoming Events

Solar Media Events
June 16, 2026
Napa, USA
Media Partners, Solar Media Events
June 30, 2026
Sacramento, California
Media Partners, Solar Media Events
August 25, 2026
São Paulo, Brazil
Media Partners, Solar Media Events
September 1, 2026
Mexico City, Mexico
Media Partners, Solar Media Events
September 9, 2026