The conference, Aug. 5-9 in Minneapolis, will focus entirely on climate change, with an emphasis on advocacy over academics.
Critics say tracking renewable natural gas production and sales will be difficult and present opportunities for fraud.
A 2019 state law requires utilities to consider energy storage in their long-range resource plans.
The agreement between Xcel Energy and clean energy advocates also includes building 3,000 megawatts of solar.
A Minnesota road repaving project highlights an uphill battle for cities trying to reduce transportation emissions.