Updates & Events
Below is a graphic of all tasks currently included as part of this project. It is important to note that it is not possible to prioritize every task each year. Some tasks are long term efforts that result in a deliverable after several years, while some are short term and have deliverables during the year they are focused on. A brief task description for each is included in the carousel. The ratings team welcomes member input on tasks that should be added, removed, or be prioritized in the coming years.
2026 Engagement Opportunities
| Event Name | Date | Location | Contact | Information |
|---|---|---|---|---|
| EPRI R&D Information Exchange Webcast (P35.013) | January 27 10:00 - 11:30 am | Webcast | Justin Bell | Meeting Information |
| Transmission and Substations Task Force Meeting | February 9 - 12 | Charlotte, NC EPRI Offices | Rachel Moore | Meeting Information |
| EPRI R&D Deep Dive Webcast: (P35.013) | March 26 | Webcast | Justin Bell | More information coming soon |
| Transmission & Substations Advisory Meeting | March 30 - April 1 | Charlotte, NC EPRI Offices | Rachel Moore | Meeting Information |
| EPRI R&D Project Update Webcast: Line Ratings (P35.013) | May 19 11:00 am - 12:00 pm ET | Webcast | Justin Bell | More information coming soon |
| Overhead Transmission 2025 ARP Rollout #1 | June 18 10:00 - 11:30 am ET | Webcast | Rachel Moore | More information coming soon |
| Overhead Transmission 2025 ARP Rollout #2 | July 30 10:00 - 11:30 am ET | Webcast | Rachel Moore | More information coming soon |
| Transmission and Substations Task Force Meeting | August 10-14 | Charlotte, NC EPRI Offices | Rachel Moore | More information coming soon |
| Transmission & Substations Advisory Meeting | August 31- September 2 | Rachel Moore | More information coming soon | |
| TLW and HTC Matrix Software Demonstration | September 10 10:30 am - 12:00 pm ET | Webcast | Justin Bell | More information coming soon |
| EPRI R&D Deep Dive Webcast: Update on DLR Status in Industry (P35.013) | 10/22/2026 | Webcast | Justin Bell | More information coming soon |
| EPRI R&D Project Update Webcast: Line Ratings (P35.013) | December 2 11:00 am - 12:00 pm ET | Webcast | Justin Bell | More information coming soon |
2026 Anticipated Deliverables
| Deliverable | Deliverable Type |
|---|---|
| DLR Field Demonstration Guide | Technical Update Report |
| EMF Tradeoffs with Uprating | Technical Update Report |
| Uprating for Data Center Load Growth | Technical Update Report |
| Results of Emissivity and Absorptivity Testing 2006–2026 | Technical Update Report |
| EPRI Increased Power Flow Guidebook—2026: Increasing Power Flow inLines, Cables, and Substations (The Platinum Book) | Reference Book |
| Transmission RatingsWorkstation: 2026 | Software |
2025 Engagement Opportunities
| Meeting | Date | Location | Information |
|---|---|---|---|
| EPRI R&D Information Exchange Webcast: TopoloNet, New Technology (P35.013) | February 10 11:00-12:00 PM |
Webcast | Meeting Materials |
| Increased Overhead Transmission Capacity Task Force | March 10-13 (In-person) March 17-20 (Virtual) |
Charlotte, NC | Meeting Materials |
| EPRI Overhead Transmission Program (P35) New Supplemental Launch Webcast | April 3 2:00 pm - 3:00 pm ET |
Webcast | Meeting Materials |
| EPRI R&D Information Exchange Webcast: BPA DLR Field Trial (P35.013) | April 17 10:00-11:30 pm ET |
Webcast | Meeting Materials |
| EPRI R&D Project Update Webcast: Line Ratings (P35.013) | May 14 10:00-11:00 AM |
Webcast | Meeting Materials |
| Overhead Transmission 2026 ARP Rollout #1 | July 17 10:00 am - 11:00 pm ET |
Webcast | Meeting Material |
| Overhead Transmission 2026 ARP Rollout #2 | July 24 2:00 pm - 3:30 pm ET |
Webcast | Meeting Material |
| Increased Overhead Transmission Capacity Task Force | August 18-22 (In-person) August 25-29 (Virtual) |
Charlotte, NC | Meeting Materials |
| EPRI R&D Information Exchange Webcast: Update on DLR Status in Industry (P35.013) | October 20 9:00-10:30 am ET |
Webcast | Meeting Materials |
| EPRI End of Year Webcast: Line Ratings (P35.013) | November 17 11:00-12:00 pm ET |
Webcast | |
| TRW Training | December 3 3:00-4:00 pm ET |
Webcast | Meeting Materials |
2025 Deliverables
| Product ID | Name |
Type |
|---|---|---|
| 3002032786 | EPRI Increased Power Flow Guidebook—2025: Increasing Power Flow in Lines, Cables, and Substations |
Guidebook |
| 3002032204 | Transmission Ratings Workstation: 2025 Beta |
Pre Software |
| 3002032787 | Transmission Ratings Workstation: 2025 Final |
Final Release |
| 3002032788 | Technical Review of Methods Used to Determine Dynamic Line Ratings (DLR) |
Final Report |
| 3002032789 | Increased Transmission Line Capacity Projects 69 kV and Above |
Technical Update |
| 3002032790 | Radial Temperature Effects on Conductors and Ratings: State of the Science |
Technical Update |
| 3002032791 | Uprating Project Stakeholder Coordination: Cybersecurity for Rating Engineers |
Technical Update |
Key Deliverables
| Product ID | Name |
Type |
|---|---|---|
| 3002030550 | Dynamic Line Ratings |
Whitepaper |
| 3002024452 | Guidance for clearance limited lines: LiDAR, UAS, and ratings best practices |
Technical Update |
| 3002027075 | Guide for Application of Weather and Forecast Models to Line Ratings |
Technical Update |
| 3002027077 | Summary of Existing Rating Practices and Considerations for Emergency Ratings |
Technical Update |
| 3002027082 | Utility Experiences with Dynamic Line Rating Technologies |
Technical Update |
| 3002027093 | Improved Methods Identifying At-risk and Wind Sheltered Spans |
Technical Update |
| 3002024453 | Using risk to establish seasonal ratings: updating to 4 seasons |
Technical Update |
| 3002024561 | Quick Insight: Ambient Adjusted and Dynamic Line Ratings on Transmission Facilities |
Whitepaper |
| 3002021564 | Ambient Adjusted Ratings Application Guide |
Technical Update |
| 3002021565 | Line Ratings Sensor Field Trials - Phase 2: LineVision V3 |
Technical Update |
| 3002020158 | Summary of Recent Increased Transmission Line Utilization Projects: 115 kV and Above |
Technical Update |