The 346-MW Gibson City Solar Project, developed by Earthrise Energy and constructed by Burns & McDonnell, achieved commercial operation in Illinois using Earthrise Energy’s surplus interconnection strategy. By connecting through the existing switchyard of an adjacent gas-fired peaking facility, the project leveraged available grid capacity rather than requiring a new interconnection, illustrating one approach to accelerating renewable energy deployment while maintaining grid reliability.
As utilities and renewable energy developers across the United States face growing delays connecting new generation to the electric grid, this project demonstrated faster ways to bring renewable generation online using existing assets. In addition to the innovative grid interconnection strategy, Burns & McDonnell paired advanced construction technologies and terrain-following solar trackers to reduce environmental impacts and improve construction execution.
“Interconnection has become one of the defining challenges for new energy projects,” said Jami Stone, construction project manager for Burns & McDonnell. “Projects like Gibson City demonstrate how developers can take advantage of existing infrastructure while combining innovative construction methods to deliver new renewable generation more efficiently. It’s an example of how the industry can rethink traditional approaches to meeting growing energy demand, and we applaud Earthrise Energy for this creative solution to help bring clean power online faster.”
Spanning approximately 1,700 acres across McLean and Ford counties, the facility is expected to generate enough renewable electricity to power approximately 46,000 homes.
The scope of work for Burns & McDonnell spanned EPC services. AZCO, a construction subsidiary of Burns & McDonnell, self-performed construction of underground electrical systems for a portion of the project, drove piles, and installed trackers and modules. The project team also provided environmental support, constructed a 34.5-/138-kV collector substation featuring a two-transformer station, and built a gen-tie line connected to a new line position in the existing Gibson City energy center substation. The site was built with union labor under the National Maintenance Agreement.
Burns & McDonnell worked with Nextpower to provide the terrain-following trackers, Shoals to provide the aboveground collection system and SMA to supply the inverters for this project. Earthrise procured Runergy solar modules, high-voltage breakers and transformers.
The project was developed to serve multiple power purchase agreements. To support this coordinated operation, Burns & McDonnell designed and commissioned the project’s supervisory control and data acquisition (SCADA) systems, providing the controls needed to safely manage both generating resources.
The Gibson City site also served as a proving ground for next-generation construction automation. Burns & McDonnell deployed AI software and robotics from Gritt to install a portion of the solar modules on-site. Gritt combines AI and robotics to automate labor-intensive construction activities by creating intelligent systems that can be attached to standard construction equipment. At Gibson City, the Gritt machines lifted and placed solar modules, reducing the need for repetitive heavy lifting while improving safety and productivity.
The project also demonstrated how engineering and technology can substantially reduce construction impacts. Using Nextpower terrain-following tracker technology, the design follows the site’s natural contours, limiting grading to fewer than 40,000 cubic yards across the project’s footprint. Compared with conventional utility-scale solar construction, the approach reduced grading requirements by as much as 90%, helping preserve existing landscapes, minimize erosion risks and reduce reseeding requirements. Burns & McDonnell also worked with the owner to establish a native seed mix and start growth before mobilizing to the site, enhancing the appearance of the finished project.
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Facts Only
* The Gibson City Solar Project has a capacity of 346 MW.
* The project was developed by Earthrise Energy and constructed by Burns & McDonnell.
* Commercial operation in Illinois was achieved using Earthrise Energy’s surplus interconnection strategy.
* The interconnection utilized the existing switchyard of an adjacent gas-fired peaking facility.
* The project spans approximately 1,700 acres across McLean and Ford counties.
* The facility is expected to generate enough renewable electricity for approximately 46,000 homes.
* Burns & McDonnell provided EPC services for the project.
* AZCO, a subsidiary of Burns & McDonnell, self-performed construction for underground electrical systems, pile driving, and tracker/module installation.
* A 34.5-/138-kV collector substation featuring a two-transformer station was constructed.
* The site utilized AI software and robotics from Gritt to install solar modules on-site.
* Nextpower provided the terrain-following trackers; Shoals provided the aboveground collection system; SMA supplied inverters; Runergy supplied solar modules, breakers, and transformers.
* The design reduced grading requirements by as much as 90% compared to conventional construction using terrain-following tracker technology.
Executive Summary
The 346-MW Gibson City Solar Project, developed by Earthrise Energy and constructed by Burns & McDonnell, achieved commercial operation in Illinois through Earthrise Energy’s surplus interconnection strategy, utilizing an existing switchyard. This approach leveraged available grid capacity instead of requiring a new interconnection. The project involved innovative construction methods, including the use of terrain-following solar trackers and advanced construction automation. Burns & McDonnell managed EPC services, coordinating with several partners for components and systems, including Nextpower for trackers, Shoals for collection systems, SMA for inverters, and Runergy for modules. The facility spans approximately 1,700 acres across McLean and Ford counties and is expected to power about 46,000 homes.
The project demonstrated an approach to accelerating renewable energy deployment by utilizing existing infrastructure while improving execution efficiency through technology. Construction involved union labor under the National Maintenance Agreement, and the site incorporated AI and robotics from Gritt for module installation. Furthermore, the design utilized terrain-following tracker technology to minimize environmental impacts, reducing grading requirements by as much as 90% compared to conventional methods.
The project served multiple power purchase agreements, and Burns & McDonnell designed and commissioned the Supervisory Control and Data Acquisition (SCADA) systems to manage the generating resources safely. The overall execution combined grid strategy innovation with technological advances in construction and environmental mitigation.
Full Take
The narrative centers on decoupling renewable energy deployment speed from traditional grid interconnection bottlenecks by leveraging existing assets. This illustrates a necessary pivot where infrastructure management and construction methodology are treated as integrated solutions rather than separate logistical hurdles. The efficiency gained through combining surplus interconnection strategies with advanced, automated construction techniques—like AI robotics for module placement and terrain-following design to minimize site disturbance—suggests a pattern where technological integration is the primary lever for achieving scalable energy transitions, superseding purely infrastructural constraints.
The reliance on innovative solutions (surplus interconnection, AI installation) positions the project as an example of industry evolution rather than mere compliance. The implication is that future grid expansion must prioritize flexible integration strategies over singular capacity acquisition. However, a critical question arises regarding the externalization of complexity: while construction impacts were demonstrably reduced via design choices, the reliance on specialized technology providers (Nextpower, Shoals, Gritt) and proprietary software introduces new points of potential systemic vulnerability or dependency. Furthermore, the focus is heavily on efficiency and execution speed; the implications for long-term grid stability beyond immediate deployment need deeper scrutiny regarding how this rapid integration interacts with legacy infrastructure planning across the broader system.
Bridge questions: If innovative interconnection strategies become the norm, what regulatory frameworks must evolve to certify these novel asset aggregation methods? How does the increasing reliance on autonomous construction systems impact workforce skill development and labor relations within established agreements like the National Maintenance Agreement? What are the long-term implications for grid reliability when generation is accelerated using existing peaking capacity rather than building new transmission lines?