CAISO takes control of Arizona-California transmission link

Facebook
Twitter
LinkedIn
Reddit
Email
Over 7GW of renewables projects are applying to connect to the transmission grid via the project. Image: Shutterstock.

The California Independent System Operator (CAISO) has taken control of a 500kV, 125-mile transmission line between California and Arizona.

The Ten West Link project was developed by Connecticut-based private equity investment firm Lotus Infrastructure Partners’ joint venture DCR Transmission. The project aims to connect 3.2GW of renewables throughout California and the south-west US, and became operational on 12 June 2024.

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

Currently, more than 7GW of renewables projects are applying to connect to the transmission grid via the project. Lotus Infrastructure Partners added that the transmission line expects the project to improve electric grid efficiency and reliability.

Construction of this transmission line, between Tonopah, Arizona and Blythe, California, began in January 2023. The Department of the Interior previously said that the construction highlighted the need for the transmission line to accommodate significant solar PV and solar-plus-storage capacity additions.

“This infrastructure project will unlock thousands of megawatts of renewable resources while improving the reliability of the bulk transmission grid. We are pleased to bring this project to fruition for the CAISO and ratepayers across the region,” said Himanshu Saxena, CEO of Lotus Infrastructure Partners.

13 October 2026
San Francisco Bay Area, USA
PV Tech has been running an annual PV CellTech Conference since 2016. PV CellTech USA, on 13-14 October 2026 is our fourth PV CellTech conference dedicated to solar manufacturing in the USA. From polysilicon, wafers, ingots, cells and modules, to critical component suppliers including glass and frames, the event connects every stage of the value chain under one roof. PV CellTech USA also brings together investors, innovators, manufacturers and industry stakeholders to collaborate and strengthen domestic solar manufacturing across the United States.

Read Next

Premium
September 11, 2026
The financial difficulties of one of Europe’s best-known downstream solar companies highlight the faultlines running through the continent’s PV and energy storage business.
September 11, 2026
Plans for the US’ “first end-to-end” solar PV critical materials recovery and recycling facility have been announced.
September 11, 2026
Italian power utility Enel has bought two solar PV projects in the US with a combined 625MW of generation capacity.
September 11, 2026
Georgia Power has secured Georgia Public Service Commission (PSC) approval for seven solar PPAs totalling 1,137MW under its CARES programmes.
September 11, 2026
Recent financial results from China's inverter manufacturers reveal a clear profitability gap between market leaders and mid-tier players.
September 11, 2026
US-based solar tracker and balance-of-system provider Array Technologies has opened a new manufacturing facility in Albuquerque, New Mexico.

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