ESIG

2025 Spring O&M Users Group Meeting
2025-03-31 - 2025-04-03 | The Brown Palace Hotel and Spa, 321 17th Street, Denver, 80202
Members of the ESIG O&M Users Group are invited to attend the 2025 Spring O&M Users Group Meeting at the Brown Palace Hotel & Spa in Denver, Colorado.
The meeting will feature a pre-meeting workshop, plenary session and manufacturer-specific roundtables. The roundtables provide the opportunity for frank and open discussion among users who share their information, knowledge and experience. As a reminder, participation in the roundtables is limited to employees of ESIG member organizations that own, operate, or maintain wind generation or solar equipment.
Below you’ll find information on accommodations. We encourage you to make your reservation as soon as possible. If your plans change, you can always cancel your reservation with the hotel up to 72 hours prior to your scheduled arrival without penalty.

Pre-Meeting Workshop: Operating Practices Guidebook
ESIG is coordinating an expansion and revision of the Operating Practices Guidebook in 2025. There will be a workshop held on Monday 1pm – 5pm for anyone who is interested in supporting the effort. No commitment is required. All volunteer authors and reviewers are strongly encouraged to attend. And we still have open spots for more volunteers! Reach out to brooke@esig.energy for more information.
Tour: Vestas Nacelles Factory
Monday, March 31, 2025, noon – 3:00 PM
Fully operational since 2010, the Nacelles Factory in Brighton proudly manufactures nacelles and hubs for wind turbines in 265,000 square feet of building space.
Transportation for the tour will leave the Brown Palace hotel at 12PM on Monday March 31st, and return to the hotel before 3PM. If you plan to rideshare to the facility from the airport, please let Brooke know so we can ensure you will have a spot back to the hotel.
We want to emphasize that this is different from the original schedule, if you signed up for the tour and will no longer be able to attend, send Brooke an email in order to issue a refund.
Opening Plenary: Solar
In an ESIG O&M first, solar is taking over the plenary session! We will have three presenters to discuss lessons learned with solar O&M, including module failure modes and serial defects, lessons learned with solar O&M, and specific recommendations related to module replacement. We also have a special fourth speaker to discuss (drumroll please…) battery storage! We’ll hear about a case study on capacity and round-trip efficiency tests, and learn a bit about BESS O&M along the way. Come join us for our first solar + storage session!
Tech Talks
Two practical roundtable discussions on gearboxes, including uptower gearbox inspection, gear oil sampling do’s/don’ts, understanding oil analysis reports, and follow up actions. These sessions will be in roundtable format to allow for a dialogue with all attendees, led by industry experts on TCM, benchmarking, oil testing, and gearbox repair.
About the Roundtables
The heart of the meeting consists of manufacturer-specific roundtables for user group members only. The format consists of open discussions, moderated by Roundtable Chairpersons, centered on a specific wind turbine component or specific model of wind turbine. The Roundtables provide the opportunity for frank and open discussion among users, who share their information, knowledge and experience.
Participation in the Roundtables is limited to employees of ESIG member organizations that own, operate, or maintain wind generation equipment.

The host hotel for the fall event is the Brown Palace Hotel & Spa.
The special ESIG room rate is $249 per night. The deadline to make your reservation is March 10, 2025.
CLICK HERE TO RESERVE YOUR ROOM
Please Note: We have a limited amount of rooms available at the government per diem rate. If you need a room at this rate, please contact Brooke Brown at brooke@esig.energy to make arrangements.
