Coleman Substation is a 345kV substation located in Coleman, Kentucky, US.

The Coleman Substation project’s construction began in 2020. Work is expected to be commissioned in 2021.


Coleman Substation project, which is an upgrade substation, will be operated by Midcontinent Independent System Operator.

The designed voltage level of the substation is 345kV and the operating voltage level is 345kV.

The step-in voltage of the project is 345kV.

Coleman Substation project development status

The development of the Coleman Substation project was approved by Kentucky Public Service Commission in 2020. The project is expected to be commissioned in 2021. Approximately $5.2m was financed by the authorities to undertake the construction works of the project.

About Midcontinent Independent System Operator

Midcontinent Independent System Operator Inc (MISO) formerly, Midwest Independent Transmission System Operator Inc is a provider of utility services. It is an independent and not-for-profit organisation. The company transmits electricity to commercial, industrial and residential customers. MISO serves customers in the US and Canada. MISO is headquartered in Carmel, Indiana, the US.


All publicly-announced T&D Line & Substation projects included in this analysis are drawn from GlobalData’s Power IC. The information regarding the projects is sourced through secondary information sources such as country specific utility players, company news and reports, statistical organisations, regulatory body, government planning reports and their publications and is further validated through primary from various stakeholders such as power utility companies, consultants, energy associations of respective countries, government bodies and professionals from leading players in the power sector.