Updates & Events
Task: Underground Transmission Education Workshops
Task Description: EPRI intends to hold educational workshops in conjunction with the Underground Transmission Task Force meetings, twice annually. Topics include design, construction, installation, operation, and maintenance of both extruded and laminar dielectric cable systems. Workshop proceedings will be made available.
Task: EPRI Underground Transmission Systems Reference Book (The Green Book)
Task Description: The EPRI Underground Transmission Systems Reference Book (the Green Book) is a desk and field compendium on the general principles involved in planning, design, manufacturing, installation, testing, operation, and maintenance of underground transmission cable systems. The project team continuously updates the Green Book, focusing on one or two sections each year.
Task: EPRI Underground Transmission Reference Book Training Proceedings
Task Description: Report contains training session proceedings in
• Underground Transmission Cable Systems
• Pipe-Type Cable Systems
• Extruded Cable Systems
• Installation, Construction, and Operations & Maintenance
Task: Increased Power Flow Guidebook (The Platinum Book) Task Description: This report will be continuously augmented with updated and additional materials on the state of the science and best practices for increasing and optimizing power flow through underground transmission cables and their associated circuit components.
Engagement Opportunities
| Meeting | Scheduled Date | Location | Information |
|---|---|---|---|
| Underground Transmission Task Force | February 19-21 (In Person) : February 26-29 (Virtual) | Charlotte, NC | Meeting Materials |
| EPRI R&D Project Update: Underground TransmissionMid-Year Webcast | June 11 : 1:00pm - 2:30pm ET | Webcast | Meeting Materials |
| Underground Transmission 2026 ARP Rollout #1 | June 18 : 1:00pm - 2:30pm ET | Webcast | Meeting Materials |
| Underground Transmission 2026 ARP Rollout #2 | August 6 : 1:00pm - 2:30pm ET | Webcast | Meeting Materials |
| Underground Transmission Task Force | August 19-22 (In Person) : August 26-29 (Virtual) | Charlotte, NC | Meeting Materials |
| EPRI Underground Transmission (Program 36) NewSupplemental Launch Webcast | October 15 : 1:00pm -2:00pm ET | Webcast | Meeting Materials |
| EPRI End of Year Webcast: P35.019, P36.008, P37.116High Voltage Direct Current | November 22, 11:00am - 12:00pm ET | Webcast | Meeting Information |
| Underground Transmission Task Force - March 2025 | March 10-13 (In Person) : March 17-20 (Virtual) | Charlotte, NC | RegisterHere |
| EPRI Kick Off Webcast: High Voltage Direct CurrentConverter Stations and FACTS | January 31 11:00am - 12:00pm ET | Webcast | Webcast Information |
2025 Planned Deliverables
| Product ID | Name | Type |
|---|---|---|
TBD |
Underground TransmissionEducation Workshop Proceedings - 2025 Update |
Report |
TBD |
EPRI Underground Transmission SystemsReference Book (The Green Book) – 2025 Edition |
Report |
TBD |
EPRI Underground Transmission SystemsReference Book Training Proceedings – 2025 Update |
Report |
TBD |
Increased Power FlowGuide Book (The Platinum Book) – 2025 Edition |
Report |
2024 Deliverables
| Product ID | Name | Type |
|---|---|---|
| 3002031283 | Underground Transmission Workstation (UTW) Module Training-Workshop Proceedings |
Report |
| 3002029513 | EPRI Underground Transmission Systems Reference Book: 2024 Edition |
Report |
| 3002029514 | EPRI Underground Transmission Systems Reference Book Training Proceedings: 2024 Update |
Report |
| 3002030267 | EPRI Increased Power Flow Guidebook (The Platinum Book)-2024: Increasing Power Flow in Lines, Cables, and Substations |
Report |
| 3002029515 | Underground Cable Fault Location Reference and Application Guide: 2024 Update |
Report |