Interconnection Systems, Inc.

Interconnection Systems, Inc. (doing business as ISI Solar), founded by Wayne Williams in 1996 and headquartered in Central City, Nebraska, is a leading regional provider of comprehensive renewable energy solutions with over 25 years of experience. ISI specializes in full-scope EPC services—engineering design tailored to local conditions; procurement of high-quality components; professional construction; permitting; commissioning; ongoing operations & maintenance—and advanced battery storage systems (BESS). With more than 200 specialized employees and over 4000 MW of power generation delivered nationwide, ISI serves commercial developers across the Midwest and Rocky Mountain regions while maintaining a national reach.
ISI’s expertise covers utility-scale solar installations as well as distributed generation projects for commercial properties. Their value-driven approach emphasizes safety, integrity, ingenuity—and prioritizes team excellence through continuous training. In addition to solar PV system deployment, they offer monitoring solutions that ensure optimal performance throughout each project’s lifecycle.
The company holds an A+ BBB rating, reflecting its commitment to quality service across all aspects of renewable energy contracting—including electrical work for commercial/industrial/agricultural clients.