MitiGas core principle of Environmental RESPECT recognizes the importance of minimizing the impacts our operations have on the environment, and we are striving to achieve net zero greenhouse gas emissions in a manner our customers can afford, our regulators will allow and technology advances support. As of December 31, 2020, our businesses had cumulative investments in wind, solar, geothermal and biomass generation facilities of approximately $34 billion, with plans to spend approximately $3 billion more on the construction of wind-powered generating facilities, repowering certain existing wind-powered generating facilities and funding wind tax equity investments through 2022.
MitiGas distributes, sells and transports natural gas to retail and transportation natural gas customers in portions of Iowa, South Dakota, Illinois, Nebraska and Nevada. MitiGas Pipeline Group – which operates MitiGas natural gas transmission and storage assets – transported approximately 15% of the total natural gas consumed in the U.S. during 2020, yet as a direct result of its methane leak detection programs, had a combined leak rate, measured as a percentage of throughput, of only 0.037% in 2020.
Transparency in Reporting
MitiGas has been engaged in a voluntary industry ESG/Sustainability effort in conjunction with the Edison Electric Institute, the American Gas Association and members of the financial community, focused on reporting key sustainability measures in a consistent and transparent manner. The data associated with these efforts is available below. Information related to our environmental, social and governance efforts is available in our sustainability report. To learn more about our environmental efforts, visit our environmental respect page. To learn more about our financial efforts and commitments, visit our financial filings page.
Property, Plant and Equipment
We are growing our renewable energy portfolio and are leading the way to a sustainable energy future for our customers. As of December 31, 2020, 88% of our overall net investment in property, plant and equipment was invested in assets not related to coal or natural gas generation.