Overview
NERC collects, maintains, and annually publishes the Electricity Supply and Demand (ES&D) database, which includes 10-year projections for the North American bulk power system (BPS). Data are validated by the NERC Regions, NERC staff, and the Reliability Assessment Subcommittee (RAS) during NERC’s annual development of the Long-Term Reliability Assessment (LTRA).
Data are presented for each NERC Region (and subregions where applicable) for years 1990-2010. For years 2011 to present, data are presented for each NERC Assessment Area. Some information in the ES&D has been aggregated to protect sensitive information.
| Category | Data Description | Data Scope | Availability |
|---|
|
Electricity Energy & Demand
|
Net Energy for Load (NEL)
|
Monthly; Prior Year Actual
|
1997–2023
|
|
Monthly; Reporting Year Forecast
|
1997–2023
|
|
Monthly; Year 1 Forecast
|
1997–2023
|
|
Annual; Prior Year Actual
|
1990–2023
|
|
Annual; Reporting Year Forecast
|
1990–2023
|
|
Annual; Years 1 – 10 Forecast
|
1990–2023
|
|
Peak Hour Demand
|
Monthly; Prior Year Actual
|
1997–2023
|
|
Monthly; Reporting Year Forecast
|
1997–2023
|
|
Monthly; Year 1 Forecast
|
1997–2023
|
|
Seasonal; Prior Year Actual
|
1990–2023
|
|
Seasonal; Reporting Year Forecast
|
1990–2023
|
|
Seasonal; Years 1 – 10 Forecast
|
1990–2023
|
|
Demand & Resource Projections
|
Energy Efficiency and Conservation; Behind the
Meter Generation; Distributed Generation; Total Internal Demand; Available
Demand Response; Net Internal Demand; Other Capacity Adjustments;
Retirements; Scheduled Outages; Transmission Limitation; Existing Generation;
Planned Generation by Tier; Capacity Transfers(Imports/Exports); Resource
Categories; Planning Reserve Margins; Reference Margin Levels
|
Seasonal; Actual, Reporting Year Forecast, and
Years 1-10 Forecast
|
1990–2023
|
|
2023 Transmission Projects
|
Includes 10-year projections for new
transmission line projects, categorized as follows: Country; Region;
Assessment Area; NERC Project ID; Project ID; Project Status; Project Name;
Tie Line; Primary Driver; Secondary Driver; Terminal Origin; Terminal End
Point; Company Name; Company EIA Code; Entity Type; Ownership (%); Line
Length (Circuit Miles); Line Type; Voltage Type; Operating Voltage Class;
Voltage Design (kV); Circuits per Structure – Present; Circuits per Structure
– Ultimate; Capacity Rating (MVA); In-Service Month-Year – Original;
In-Service Month-Year – Expected; Cause of Delay / Other Comments
|
Years 1-10 Projections
|
2023
|
|
2023 Transformer Projects
|
Includes 10-year projections for new
transformer projects, categorized as follows: Project ID; Project Name;
Project Status; Voltage - Low-Side (kV); Voltage - High-Side (kV); In-Service
Month-Year; Description/Status
|
Years 1-10 Projections
|
2023
|
Click here for: 2023 ES&D - Released December 2023
Data Questions
Please direct all data inquiries to NERC staff. References to the data and/or findings of the assessment are welcome with appropriate attribution of the source to the NERC 2023 ES&D.
