AEE

Ameren Corporation 10-Q Summary: Period Ended June 30, 2005

Business Context and Reporting Period

This Form 10-Q covers the quarterly period ended June 30, 2005, for Ameren Corporation and its subsidiaries, including Union Electric Company (UE), Central Illinois Public Service Company (CIPS), Ameren Energy Generating Company (Genco), CILCORP Inc., Central Illinois Light Company (CILCO), and Illinois Power Company (IP). Ameren is a public utility holding company operating rate-regulated electric and natural gas businesses in Missouri and Illinois, alongside non-rate-regulated generation businesses. The reporting period includes the full impact of the IP acquisition completed on September 30, 2004, and significant intercompany restructuring in May 2005, where UE transferred its Illinois service territory to CIPS and Genco transferred generation assets to UE.

Key Financial Metrics (Six Months Ended June 30, 2005)

Note: 2004 figures for consolidated Ameren exclude IP results prior to the September 2004 acquisition.

Material Changes vs. Prior Period

• Revenue Growth: Total operating revenues increased $848 million (36%) year-over-year, driven primarily by the inclusion of IP results ($503 million in electric revenue for the six months) and increased interchange power sales margins.
• Profitability: Net income increased $91 million (42%). Key drivers included the acquisition of IP, hotter-than-normal summer weather increasing demand, and the absence of a refueling outage at UE's Callaway nuclear plant (which occurred in Q2 2004).
• Margin Expansion: Electric margins increased $243 million for the six months. Interchange margins rose $62 million due to higher power prices and improved plant availability.
• Cost Increases: Fuel and purchased power expenses increased significantly ($354 million variance) due to higher market prices and the inclusion of IP's purchased power costs. Other operations and maintenance expenses increased $69 million, largely due to IP integration costs and higher labor expenses, partially offset by the absence of the 2004 Callaway outage costs.
• Intercompany Restructuring: In May 2005, UE transferred its Illinois utility business to CIPS ($133 million net book value) and Genco transferred 550 MW of generation capacity to UE ($241 million), altering the operational footprint of the subsidiaries.

Guidance, Outlook, and Risks

Outlook and Management Commentary:

• Rate Adjustments: Electric rate freezes in Illinois and Missouri are set to expire in 2006 and 2007. Ameren expects to file cost-of-service studies in late 2005. Management anticipates Illinois rates may increase 10% to 20% in 2007, largely driven by higher power costs.
• Environmental Compliance: New EPA regulations (Clean Air Interstate Rule) will require significant capital investment ($1.4 billion to $1.9 billion by 2015) for pollution control equipment. Approximately two-thirds of this cost is expected to be recoverable from ratepayers in regulated jurisdictions.
• Coal Supply: Rail disruptions in the Powder River Basin in May 2005 reduced coal deliveries. Ameren expects to receive 85-90% of scheduled deliveries until November 2005 but maintains sufficient inventory to operate.
• Callaway Outage: A major refueling and maintenance outage at the Callaway nuclear plant is scheduled to begin in September 2005, lasting 70-75 days, which will increase maintenance and purchased power costs in the latter half of the year.

• Regulatory Risk: Uncertainty regarding future rate treatments after moratoriums expire and the outcome of the proposed generation procurement auction in Illinois.
• Environmental Litigation: Ongoing EPA enforcement initiatives regarding New Source Review at coal-fired plants and remediation costs for former Manufactured Gas Plant (MGP) sites.
• Market Risk: Exposure to volatile commodity prices for coal, natural gas, and electricity, particularly for non-rate-regulated generation assets (Genco, CILCO) where costs cannot be immediately passed through to customers.
• Integration Risk: Challenges in integrating IP and realizing anticipated synergies.

Key Facts for Investor Verification

• IP Acquisition Impact: Verify the accretive nature of the IP acquisition and the status of the $100 million escrow account (released to Dynegy in July 2005).
• Rate Freeze Expiration: Monitor filings for rate adjustments in Missouri (UE) and Illinois (CIPS, CILCO, IP) expected in late 2005/early 2006.
• Environmental Capital Expenditures: Track the $1.4 billion to $1.9 billion capital requirement for EPA compliance and the recoverability of these costs in regulated vs. non-regulated segments.
• Coal Logistics: Assess the impact of Powder River Basin rail disruptions on fuel costs and generation availability through late 2005.
• Callaway Nuclear Plant: Monitor the September 2005 outage schedule and associated costs, as well as ongoing operational performance improvements.
• Debt Covenants: Confirm continued compliance with debt-to-capitalization covenants (e.g., Ameren at 46% vs. 65% limit) following recent debt issuances and redemptions.