OpenEI Utility Rates
Access complex utility rate structure information (across all sectors) for most U.S. utility companies from the National Utility Rate Database. This information is collected and quality controlled on a continual basis by Illinois State University on behalf of DOE and housed within the OpenEI.org platform.
For web service details and documentation, see OpenEI's Web Services.
Note: Your developer.nrel.gov API key is not necessary for accessing OpenEI's web services.