Rate and Regulatory Matters (Tables)

3 Months Ended

Mar. 31, 2023

The following table provides information with respect to each build-transfer agreement:


	Boomtown Solar Project(a)	Huck Finn Solar Project(b)
Agreement date	February 2022	June 2022

Developer	Invenergy Renewables, LLC	EDF Renewables, Inc.
Facility size	150-MW	200-MW
Location	Southeastern Illinois	Central Missouri
Status of MoPSC CCN	Approved April 2023	Approved February 2023
Status of FERC approval of acquisition	Expect to request by mid-2023	Received March 2023
Expected completion date(c)	As early as fourth quarter 2024	As early as fourth quarter 2024

(a)The Boomtown Solar Project is expected to support Ameren Missouri’s transition to renewable energy generation and serve customers under the Renewable Solutions Program discussed below.

(b)The Huck Finn Solar Project represents approximately $0.35 billion of capital expenditures and is expected to support Ameren Missouri’s compliance with the state of Missouri’s requirement of achieving 15% of retail sales from renewable energy sources, of which 2% must be derived from solar energy sources.

(c)The expected completion dates may be impacted by the timing of FERC approval for the Boomtown Solar Project and potential sourcing issues resulting from a United States Department of Commerce investigation of solar panel components imported from four Southeast Asian countries initiated in March 2022 and the detention of certain solar panel components sourced from China as a result of the Uyghur Forced Labor Prevention Act that became effective in June 2022.

Schedule of MYRP details

The following table includes the forecasted revenue requirement, the requested ROE, the requested capital structure common equity percentage, and the forecasted average annual rate base for 2024 through 2027, as reflected in Ameren Illinois’ MYRP:


Year	Forecasted Revenue Requirement (in millions)	Requested ROE	Requested Capital Structure Common Equity Percentage(a)	Forecasted Average Annual Rate Base (in billions)
2024	$1,282	10.5%	53.99%	$4.3
2025	$1,373	10.5%	53.97%	$4.6
2026	$1,477	10.5%	54.02%	$5.0
2027	$1,556	10.5%	54.03%	$5.3

(a)A capital structure of up to and including 50% common equity is deemed prudent and reasonable by law. A higher equity ratio requires specific ICC approval.