Herleman – Meredosia Line is a 345kV overhead line with a length of 74.99km from Herleman, Illinois, US, to Meredosia, Illinois, US.

Construction works on the Herleman – Meredosia Line started in 2016 and the project was commissioned in 2017.


The Herleman – Meredosia Line, which is an overhead line, is being operated by Ameren Illinois. The Herleman – Meredosia Line is an upgrade line. The line carries alternating current (AC) through double circuit cable.

Herleman – Meredosia Line project development status

The development of the Herleman – Meredosia Line project was approved by Illinois Commerce Commission in 2016 and the project works were completed in 2017.

About Ameren Illinois

Ameren Illinois Co (Ameren Illinois), a subsidiary of Ameren Corp is engaged in regulated electric and gas distribution related activities to various users residing in central and southern Illinois regions. The company is headquartered in Illinois, 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.