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 - March 2025 | March 10-13 (In Person) : March 17-20 (Virtual) | Charlotte, NC | Meeting Materials |
| Underground Transmission (Program 36) New Supplemental Launch Webcast | March 31 1:00pm - 2:00pm ET | Webcast | Meeting Materials |
| EPRI R&D Project Update Webcast: Underground Transmission (P36) | June 10 1:00pm - 2:30pm ET | Webcast | Webcast Information |
| Underground Transmission 2025 ARP Rollout #1 | June 17 1:00pm - 2:00pm ET | Webcast | |
| EPRI R&D Project Update Webcast: High Voltage Direct Current Converter Stations and FACTS (P35.019, P36.008, P37.116) | June 27 11:00am - 12:00pm ET | Webcast | Webcast Information |
| Underground Transmission 2025 ARP Rollout #2 | August 5 1:00pm - 2:30pm ET | Webcast | |
| Underground Transmission Task Force | August 18-22 (In Person) : August 25-29 (Virtual) | Charlotte, NC | |
| EPRI End of Year Webcast: High Voltage Direct Current Converter Stations and FACTS (P35.019, P36.008, P37.116) | November 21 8:00am - 9:00am PT | Webcast |
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 |