Illinois Transmission Project Ameren Illinois

Brokaw to South Bloomington 345,000-volt transmission line project

Ameren Lineman on South Bloomington Transmission Line

Quick Facts

Completion Date: December 2014

Type: 345,000-volt transmission line

Length: Approximately 6 miles


Recent News

On Sept. 6, 2012, the Illinois Commerce Commission granted a Certificate of Public Convenience and Necessity to construct, operate and maintain the 345,000 volt Brokaw Transmission Line. This is ICC Case Number: 12-0154.


Ameren Illinois has completed the three scheduled public open house events.


Why Do We Build Transmission Lines?

First, it is important to understand the purpose of a transmission line. These lines carry high-voltage (100,000 volts and above) electricity for long distances to deliver energy from power plants to your home or business. Common transmission line voltages include 138,000 volts, 161,000 volts, 230,000 volts and 345,000 volts.

In order to get the power to you, transmission lines deliver electricity to substations, which reduce the electricity to lower voltages so it can travel through the distribution system to your home or business.

We build new transmission lines for two important reasons.

First, we build these lines to improve the reliability of our service. This means fewer outages, and shorter power outages when they do occur.

Second, we build new transmission lines to meet the growing need for safe, reliable electricity. New homes, new stores, new offices, new factories – they all need electricity, and they all call on us to deliver it. Also, consumers are using a growing number of electrically powered devices and equipment, which creates new demand for power. We must make certain we have enough transmission lines to supply the electricity our customers need.