Building a Brighter Energy Future
At GridLiance, we take pride in delivering projects that transform energy infrastructure and ensure reliable, efficient, and sustainable energy transmission. Explore our portfolio of past and ongoing projects to see how we are leading the way in innovation and excellence.
Showcasing Excellence in Energy Transmission
Sloan Canyon Improvement Project
Providing financial flexibility and expanding the electric highway in southern Nevada to improve reliability and stabilize energy costs.
In 2017, GridLiance West acquired Valley Electric Association’s (VEA’s) high-voltage transmission system in Clark County, Nevada along with a 230 kV transmission line project to physically connect the VEA and GridLiance transmission system to the California Independent System Operator (CAISO). With the funding from GridLiance, VEA was able to pay down debts and reinvest in projects for members, such as a broadband network. GridLiance West physically connected VEA’s transmission facilities to CAISO by building a 3.2-mile 230 kV transmission line and a 230 kV switching station. The upgrades improved the regional electric system’s reliability and resiliency while also facilitating additional renewable energy development in Southwest Nevada.
Sloan Canyon - Mead 230kV Rebuild
Increasing transmission capacity in southern Nevada to save ratepayers money
Electric transmission limitations and congestion on the Sloan Canyon - Mead Transmission Line was increasing the cost of transmitting power and dimming the prospects for future solar development in southwest Nevada. Grid congestion on the 15-mile transmission line limited its capacity to deliver electricity without exceeding thermal, voltage, and stability limits needed for reliability. This inefficient delivery of electricity led to increased energy costs in the region. To eliminate these constraints, CAISO authorized GridLiance West to rebuild and upgrade the transmission line.
CAISO estimates the project, which was completed in December 2020, will save ratepayers $180 million over the 40-year life of the project.
Core Upgrades
Direct investment for Nevadans and minimizing the potential for power outages
GridLiance West will upgrade transmission lines and substations in southern Nevada, replacing existing transmission lines and building new substations that will improve the reliability and resilience of the electrical grid for customers. The new and upgraded infrastructure in Nye and Clark counties will provide dependable power to homes and businesses, reducing service interruptions.
Johnnie Corner – Beatty Upgrade
Keeping the lights on and modernizing Nevada's energy grid with more affordable and reliable energy
The GridLiance West Johnnie Corner – Beatty Upgrade Project aims to replace aging infrastructure in Nye County, Nevada. A new 230-kV transmission line will be constructed alongside the existing 138-kV line from the Johnnie Corner substation, located about 15 miles north of Pahrump, to the Beatty substation. This project will significantly enhance the region’s energy system, improving power reliability and encouraging further economic development in the community.
Panhandle Reliability Improvement
Keeping the lights on and reducing the number and severity of power outages
Tri-County Electric Cooperative (TCEC) members in the Oklahoma Panhandle regularly contended with severe weather that disrupted electric transmission service in the region for days and weeks. To keep the lights on and reduce the number and severity of power outages, GridLiance upgraded transmission facilities, including substations that dated back to the 1950s. The three-year project increased the reliability of the regional grid for TCEC’s members and enabled load growth in the area. The work created more than $440 million of economic benefits in the region, according to a study conducted by Oklahoma Panhandle State University.
City of Winfield Transmission Upgrades
Strategically planning for continuous transmission improvements to improve reliability and resilience
As co-owners of local transmission facilities, the City of Winfield, Kansas and GridLiance collaborated on a series of upgrades to enhance service and harden the system against severe flooding. Projects included relocating lines crossing the Walnut River threatened by erosion and rebuilding 3 miles of transmission line as required by Southwest Power Pool (SPP) to boost regional reliability. Overall, these improvements have improved service to homes and businesses while providing reliability benefits to the region.
Ohio River Crossing Project
In 2020, GridLiance Heartland purchased two substations in Massac County, Illinois, and six 161-kV transmission lines in northern Kentucky from Electric Energy, Inc.
Built more than 50 years ago, these transmission lines are being replaced to maintain the reliability of the transmission service provided to area customers.
In addition, GridLiance Heartland has integrated the 161-kV transmission lines into the regional grid operated by the Midcontinent Independent System Operator (MISO).
MariBell Transmission Project
Supporting grid reliability in Minessota and Wisconsin
A 139-mile, 765 kilovolt (kV)/161 kV double circuit project to enhance grid reliability in Minnesota and Wisconsin by Dairyland Power Cooperative and GridLiance Heartland.
