The Wholesale Electricity Prices (WEP) Tool

The Wholesale Electricity Prices (WEP) tool, allows users to explore trends in nodal wholesale energy pricing across the country and over time. Nodal wholesale energy pricing patterns can be complex, and those patterns are often obscured when looking at regional average annual pricing trends. The WEP tool allows users to compare pricing trends across locations, regions, and several different timeframes. These comparisons illustrate the ongoing interactions between generation resources, demand, and wholesale energy prices.

Data Download Feature: Scroll to the bottom of the tool to find an option to download selected data 
Documentation: Click here for a document describing the functionality and methods of the tool.

Past updates:

• May, 2024
• March, 2023
• March, 2022
• May, 2021

Further reading:

• "Electric transmission value and its drivers in United States power markets" in Nature Communications
• Electric transmission value tool
• Berkeley Lab’s Utility-Scale Generation and Storage Tools and Data
• “Plentiful electricity turns wholesale prices negative” in Advances in Applied Energy

Suggested citation: Dev Millstein, Eric O’Shaughnessy, Ryan Wiser. 2026. Wholesale Electricity Prices (WEP) tool. Lawrence Berkeley National Laboratory. Version 2026.1 https://emp.lbl.gov/wholesale-electricity-prices-wep-tool

We want to hear from you. If you have questions about WEP or the underlying data, contact Dev Millstein at [email protected].