Energy and Carbon Management Commission approves Bison 4's Eider North oil development plan

The Colorado Energy and Carbon Management Commission (ECMC) has approved an amended oil and gas development plan by Bison 4 Operating LLC for the Eider North site, marking a significant step in local energy production. The commission voted unanimously, 4-0, to approve the application during their meeting on July 9, 2025, following a thorough review process that included no public opposition.

The approved plan expands the existing development to include four additional horizontal wells, bringing the total to eleven. This expansion will occur on a previously disturbed site, ensuring minimal new surface impact. The project is located in Weld County, where it has received local support and has complied with all necessary regulations, including environmental assessments.

Key features of the development include the use of existing infrastructure and a commitment to best management practices aimed at reducing emissions and environmental impact. Bison plans to utilize advanced technologies, such as dual fuel engines with battery assist for drilling and electrified compression systems, to enhance operational efficiency and minimize noise and emissions.

Despite the approval, some commissioners expressed concerns regarding the number of storage tanks required for the new development. The need for additional tanks arises from federal regulations that prevent the commingling of production from different mineral sources. While the operators assured that the number of tanks is necessary for compliance, commissioners encouraged Bison to explore opportunities for repurposing existing tanks and reducing overall storage needs in the future.

The commission's decision reflects a balance between advancing energy development and addressing environmental concerns, with a focus on sustainable practices. As Bison prepares to move forward with construction slated for late 2025, the ECMC will continue to monitor the project's implementation and its adherence to best practices. This approval not only supports local energy production but also emphasizes the importance of responsible resource management in Colorado.