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Electric utility energy mix and emission rates
October 2021


This electric energy mix and emission rate information is provided for retail electric customers of Upper Michigan Energy Resources Corporation (UMERC), a regulated utility subsidiary of WEC Energy Group (WEC) operating in the state of Michigan. The emission rates are supplied for customers to estimate their environmental footprint from electric energy supplied by UMERC, such as Scope 2 (indirect) greenhouse gas emissions.

Emission rates are calculated using total emissions and megawatt-hours from generation by owned facilities. The emission rates apply to UMERC’s retail electric utility customers, except for customers of Energy for Tomorrow® or NatureWise®, renewable energy programs that are offered to UMERC’s retail electric customers.

Emissions from electric generation facilities are calculated in accordance with the U.S. Environmental Protection Agency mandatory Greenhouse Gas Reporting Program regulations under 40 CFR Part 98. The energy resource mix represents net generation from UMERC-owned facilities.

WEC and UMERC reserve the right to use all or some of the environmental attributes associated with generation from renewable energy sources in future years to comply with renewable energy standards or other regulatory requirements, or to sell to third parties the environmental attributes such as renewable energy credits, offsets, allowances and the avoided emissions of greenhouse gases. All information is provided on a voluntary basis, could be subject to change, and has not received independent third party verification. Neither WEC nor UMERC makes any assurances regarding the use of this information by external parties for marketing or other sustainability claims.

Upper Michigan Energy Resources Corporation energy mix and emissions

  2018 2019 2020
Emission rates: Owned generation (lbs/megawatt-hour)
Carbon dioxide (CO2) UMERC generation began commercial operations on 3/31/2019. 1,149 1,109
Methane (CH4) 0.022 0.021
Nitrous oxide (N2O) 0.002 0.002
Carbon dioxide equivalent (CO2e) 1,150 1,110
Sulfur dioxide (SO2) 0.01 0.01
Nitrogen oxides (NOx) 0.20 0.18
Energy resource mix: Retail customers
Energy from owned generation (megawatt-hours)   644,730 763,872
Natural gas 100.0% 100.0%