🔌 Interconnection Weekly: Project Updates You Need to Know (3/17/2025 - 3/30/2025)
27 projects moved in the interconnection queues across the country in the past 2 weeks
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We saw the following updates to U.S. transmission grid interconnection projects. For access to our live dataset, contact our sales team here.
New switching station near Rancho Seco 230 kV Substation — 550MW battery + solar 🔋☀️ project in Sacramento County, CA (Sacramento Municipal Utility District). Proposed completion changed from December 28, 2028 to December 30, 2029
Burns 345kV Substation — 360MW wind 💨 project in Butler County, KS (SPP). Proposed completion changed from February 28, 2027 to January 30, 2029
Nashua 161 kV Substation — 300MW battery 🔋 project in Clay County, MO (SPP). Proposed completion changed from December 30, 2027 to April 30, 2030
Tap of Mingo - Red Willow 345 kV Line — 270MW solar ☀️ project in Decatur County, KS (SPP). Proposed completion changed from December 30, 2025 to December 30, 2028
Q3 new switching station near Cordova 230kV Substation — 250MW battery + solar 🔋☀️ project in Sacramento County, CA (Sacramento Municipal Utility District). Proposed completion changed from December 30, 2027 to December 30, 2028
New switching station near Hedge 230 kV Substation — 250MW battery 🔋 project in Sacramento County, CA (Sacramento Municipal Utility District). Proposed completion changed from September 30, 2027 to September 30, 2028
Bison 345kV Substation — 200MW solar ☀️ project in Johnston County, OK (SPP). Proposed completion changed from November 30, 2024 to November 30, 2027
Wilkes 345 kV Substation — 150MW battery + solar 🔋☀️ project in Marion County, TX (SPP). Proposed completion changed from September 29, 2026 to March 31, 2027
McCartney 161 kV Substation — 145MW gas 🔥 project in Greene County, MO (SPP). Proposed completion changed from December 31, 2025 to December 31, 2026
Magley Solar Energy Center — 135MW solar ☀️ project in Adams County, IN (PJM). Proposed completion changed from December 30, 2024 to March 30, 2029
Brown - South Coleman Junction 138kV line — 113MW solar ☀️ project in Bryan County, OK (SPP). Proposed completion changed from February 1, 2026 to May 31, 2028
Greenwood Solar — 100MW solar ☀️ project in Culpeper County, VA (PJM). Proposed completion changed from December 14, 2025 to October 14, 2026
Dulles Solar — 100MW solar ☀️ project in Loudoun County, VA (PJM). Proposed completion changed from December 30, 2023 to October 30, 2026
Canadian Switch 138 kV Substation — 100MW battery 🔋 project in Cleveland County, OK (SPP). Proposed completion changed from December 30, 2026 to December 30, 2027
Silver City 138 kV Substation — 100MW battery 🔋 project in Creek County, OK (SPP). Proposed completion changed from December 30, 2026 to December 30, 2027
Talawanda to Canadian River 138 kV Line Tap — 90MW solar ☀️ project in Pittsburg County, OK (SPP). Proposed completion changed from February 1, 2026 to May 31, 2028
Sumac Solar — 80MW solar ☀️ project in Bertie County, NC (PJM). Proposed completion changed from December 30, 2026 to June 30, 2028
Strinestown Solar Project — 79MW solar ☀️ project in York County, PA (PJM). Proposed completion changed from December 30, 2024 to January 6, 2027
Dover Solar — 55MW solar ☀️ project in York County, PA (PJM). Proposed completion changed from October 31, 2024 to October 13, 2026
Prairie Refuge Solar, Kenzie Creek-Stone Lake 69 kV — 50MW solar ☀️ project in Cass County, MI (PJM). Proposed completion changed from October 30, 2023 to May 30, 2028
Concho Solar I — 49MW solar ☀️ project in Queen Annes County, MD (PJM). Proposed completion changed from June 2, 2027 to June 2, 2024
Scioto Solar — 30MW solar ☀️ project in Hardin County, OH (PJM). Proposed completion changed from December 30, 2028 to December 27, 2026
Harrowgate 1 — 20MW solar ☀️ project in Chesterfield County, VA (PJM). Proposed completion changed from March 29, 2025 to June 29, 2027
Dover Solar — 20MW solar ☀️ project in York County, PA (PJM). Proposed completion changed from October 31, 2024 to October 13, 2026
Chester Solar Technology Park — 20MW solar ☀️ project in Chesterfield County, VA (PJM). Proposed completion changed from October 30, 2022 to June 29, 2027
Concho Solar I — 17MW solar ☀️ project in Queen Annes County, MD (PJM). Proposed completion changed from June 2, 2027 to June 2, 2024
Siouxland 69kV — 15MW gas 🔥 project in Woodbury County, IA (SPP). Proposed completion changed from February 15, 2023 to February 28, 2022
