Fuel Mix Report

Annual Fuel Mix Report

Richland Energy Services is providing this fuel mix disclosure as required by Washington State Law, RCW Chapter 19.29A. The fuel mix identifies fuel sources used to generate electricity the utility sold to customers in 2024; 88% of our electricity had no emissions. Questions regarding this information should be directed to our office at (509) 942-7403 or by email.

Fuel Type

2024

2023

2022

2021

2020

  Fuel type listed by %
 Coal 0.0 0.0  0.0  0.0  0.0 
 Hydro 74.89  78.0   78.66 78.3  78.24 
 Natural Gas 0.0  0.0  0.0  0.0  0.0 
 Nuclear 12.83 11.3  10.17  10.09  10.09 
 Petroleum 0.0  0.0  0.0  0.0  0.0 
 Solar 0.58  0.2  0 .59 0.63  0.04 
 Wind 0.0  0.4  0.0 0.0  0.0 
 Other Generation -0.03   0 .0  -0.02 0.0  0.0 
 Unspecified* 11.73  10.1   10.60 10.98  11.63 
           
 Total 100.00% 100.00%  100.00%  100.00%  100.00% 

 

*RES purchases power from the Bonneville Power Administration and non-federal sources from which the specific generating resource may not be disclosed at the time of transaction. These are reported as Unspecified resources.

Carbon Emissions

We report the greenhouse gas content of the energy we purchase according to WAC Chapter 194-40-060 Fuel Mix and Greenhouse Gas Emission. The following are the greenhouse gas emissions for RES’ wholesale power purchases:

 
 MT CO2e
 MWh Purchased
Avg. Emission Rate
MT CO2e/MWh
 2024
 16,055.0934  993,138  0.0162
 2023
 17,932.7151  999,179  0.0179
 2022
 24,316.3352  1,024,056  0.0237