WHAT are we doing to demonstrate that?

Creating Value by Investing in Infrastructure

Utilities are among the nation’s most capital-intensive industries, and our projects support jobs and economic development. The strategic investments Ameren makes in regulated infrastructure—reliability upgrades, environmental enhancements and service improvements for homes and businesses—create value for customers and shareholders alike. In 2017, Ameren invested $2.1 billion in the energy infrastructure serving Missouri and Illinois. We’re making the grid smarter while looking to the future, identifying a long-term, sustainable investment pipeline.

Learn more about our investments in Illinois and Missouri.

The Illinois Rivers Transmission Project directly aligns with our goal of providing reliable, efficient and environmentally responsible energy.

Progress continues on the $1.4 billion Illinois Rivers Transmission Project, the largest ever transmission project in Ameren’s history. This 345-kilovolt transmission line will span approximately 375 miles. At the end of 2017, the seventh of nine line segments was energized and all ten substations were in service. With two of the river crossing towers standing at approximately 490 feet and a total span length over the river of 3744 feet, the section of the line that crosses the Illinois River has both the largest towers and the longest span length on Ameren's system. Construction is expected to be completed in 2019.

Planned capital investment allocation 2018-2022*

Looking ahead, we plan to invest around $11 billion in regulated infrastructure from 2018-2022, allocating 61% of our capital to FERC-regulated electric transmission, Illinois gas distribution and Illinois electric distribution; and 39% to Missouri operations.

This five-year plan currently excludes Ameren Missouri's proposed addition of at least 700 megawatts of wind generation by 2020 that is subject to contract finalization and regulatory approval. This generation is an approximate $1 billion investment opportunity designed to accelerate our transition to a cleaner, more diverse energy portfolio in a responsible manner. The five-year plan also excludes potential Ameren Missouri incremental grid modernization investments that would be enabled should constructive Missouri electric utility legislation be enacted.


*Issued and effective as of Feb. 16, 2018 Earnings Conference Call.

Transmission and Distribution Comprise 70 Percent of our Rate Base

At year-end 2017, electric and gas transmission and distribution investments comprised 70% of Ameren's regulated infrastructure rate base, while fossil fuel-fired generation investments comprised only 17% of rate base. These percentages reflect our strategic allocation of increasing amounts of capital to distribution and transmission businesses and our view that the energy grid will be increasingly important and valuable to our customers, the communities we serve and our shareholders. This value is expected to be driven by the need for a smarter, more hardened grid to incorporate increasingly more distributed and renewable generation sources. We expect the percentage of rate base represented by fossil fuel-fired generation investments to decline in the years ahead as we focus on transmission and distribution investments and our plan to increase renewable generation investments.

Understanding the Importance of Modern Regulatory Frameworks

Ameren's strategy is to invest in regulated energy infrastructure, continuously improve performance and advocate for responsible energy policies to deliver superior customer and shareholder value. Ameren continues to work to enhance regulatory frameworks in Missouri and Illinois.


Missouri established its regulatory framework in 1913. Forty-six other states have already modernized energy regulations and generated new and needed investments. To give Missourians smarter, more secure and more stable energy, Missouri needs legislation that helps advance smart technologies while maintaining strict regulatory oversight and consumer protections such as strong rate caps.



In recent years (starting in 2011), Illinois has updated its regulatory framework to encourage electric and natural gas infrastructure investments. The state was recently rated No. 2 in the nation by the National Grid Modernization index for creating an environment that encourages investment. In 2016, electric distribution formula ratemaking was extended through 2022; the passage of this important legislation paved the way for Ameren to continue implementing a world-class energy infrastructure modernization program for central and southern Illinois.