Northern Power Systems’ Electrical Certification to UL 1741 SB Opens New Doors for the NPS 100C
After 18 months of dedicated design, engineering and testing, Northern Power Systems (NPS) announced on February 3, 2026, that its NPS 100C wind turbine successfully obtained UL 1741 Supplement B (UL 1741 SB) certification. This upgrade ensures compliance with the IEEE 1547-2018 standard, enabling distributed energy resources to actively support grid stability with advanced features including Volt-VAR and ride-through capabilities.
This certification positions NPS among the very first distributed wind manufacturers with a UL-1741 SB certified converter specifically engineered for its wind turbines. The newly certified NPS 100C is designed to meet strict, modern grid-code regulations, allowing for faster, easier utility interconnection across the U.S. The converter handles voltage/frequency ride-through, Volt-VAR control, and frequency-watt response, preventing system disconnections during disturbances.
For NPS partners, developers, utilities and current customers interested in upgrade capability, this means fewer interconnection barriers, increased uptime (availability) and related return on investment. This certification also translates into long-term regulatory resilience and improved reliability over the 20+ year design life of the wind turbine.
The certification project was completed by Northern Power Systems’ U.S. subsidiary, with significant funding support from the National Laboratory of the Rockies (NLR, formerly NREL) through its Competitiveness Improvement Project (CIP) program; as well as technical and testing automation support from DER Security. Thank you to both NLR and DER Security!
This upgrade shifts the NPS 100C from simple grid interaction to active grid support, essential for high renewable penetration across the U.S. and Worldwide. For more information see related posts: NPS Website | LinkedIn
Member Spotlight: Ryan Storke on “Badass Businesses”
“Badass Businesses” recently released a video featuring wind technician and Storke LLC CEO Ryan Storke, who trains host Dakota Stark in tower climbing, rescue procedures, and turbine mechanics before taking him 220 feet up a live turbine for an emergency rotor-lock repair and annual maintenance. The episode showcases how Ryan’s 6-person team manages and maintains roughly 500 turbines across the Northeast while operating a high-risk repair business that keeps distributed wind projects safely online. Watch the full video on YouTube.