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.

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 2028 and beyond.
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
June 16, 2026
PV Tech Premium sat down with Anne Loomis, partner at Troutman Pepper Locke, to discuss the safe harbour deadline for US solar developers.
June 16, 2026
Brisbane-based developer Renewable Energy Partners (REP) has expanded the Bogunda Energy Hub to include solar PV and battery energy storage, with the project now formally in early-stage development south of Hughenden in Queensland, Australia.
June 15, 2026
HVR Solar has signed a series of agreements to develop of a 1.2GW TOPCon solar cell manufacturing plant in Amroha, Uttar Pradesh. 
June 15, 2026
SECI is inviting bids for 4,800MWh of firm and dispatchable renewable energy capacity supported by co-located energy storage systems. 
June 15, 2026
CPUC has finalised details of its community solar, which has been dismissed as 'unworkable and destined for continued failure' by CLASS.
June 15, 2026
SmartHelio, the Swiss solar predictive analytics specialists, has secured new investment from the technology funder quantumEDGE Ventures to develop its technology and expand into new markets.

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