LNT

Alliant Energy Corp. 10-Q Summary (Period Ended June 30, 2007)

Business Context and Reporting Period

This Form 10-Q covers the quarterly period ended June 30, 2007, for Alliant Energy Corporation and its primary subsidiaries, Interstate Power and Light Company (IPL) and Wisconsin Power and Light Company (WPL). Alliant Energy is an investor-owned public utility holding company operating in Iowa, Minnesota, and Wisconsin. The filing includes unaudited condensed consolidated financial statements for the three and six months ended June 30, 2007, compared to the same periods in 2006.

Key Financial Metrics

Note: Operating cash flow is reported for the six-month period only in the summary table above.

Material Changes vs. Prior Period

• Revenue Growth: Operating revenues increased 7.1% for the six months ended June 30, 2007 ($1,658.9 million) compared to 2006 ($1,627.7 million), driven by higher non-regulated revenues and utility rate increases.
• Profitability: Net income for the six months ended June 30, 2007, was $112.5 million, a significant increase from $43.8 million in the prior year period. This improvement is largely due to the absence of a $90.8 million loss on early extinguishment of debt recorded in the first half of 2006 and gains from discontinued operations.
• Discontinued Operations: The company recorded a net gain of $2.3 million from discontinued operations in the first half of 2007, compared to a loss of $15.4 million in the same period in 2006. This includes a $10.7 million pre-tax gain from the sale of the Mexico business in Q2 2007.
• Winter Storm Impact: IPL incurred approximately $30 million in incremental capital expenditures and $6 million in operating expenses related to winter storm restoration efforts in the first quarter of 2007.

Guidance, Outlook, and Risks

• Asset Divestitures: IPL has signed a definitive agreement to sell its electric transmission assets for approximately $750 million. The transaction is expected to close in the fourth quarter of 2007, subject to regulatory approvals. Net proceeds are estimated between $475 million and $525 million.
• Capital Expenditures: Alliant Energy anticipates 2007 construction and acquisition expenditures of $580 million, an increase of $45 million from earlier estimates due to winter storm restoration costs.
• Regulatory Matters: WPL is subject to new Wisconsin rules regarding fuel-related cost recovery and air quality compliance (RACT and BART rules), which may require significant capital investments. Minnesota enacted new energy laws (SF 145) impacting greenhouse gas emissions and facility construction.
• Tax Contingency: The IRS is proposing to defer $257 million of capital losses related to former Brazil investments until 2006. If Alliant Energy cannot generate sufficient capital gains to offset this loss by 2011, it could have a material adverse impact on financial condition.
• Share Repurchases: The company repurchased 5.4 million shares for $234 million in the first half of 2007. As of July 31, 2007, $61 million remained available under the repurchase authorization.

Investor Verification Checklist

• Transmission Sale Closing: Verify the status of regulatory approvals (IUB, MPUC, ICC, FERC) required for the $750 million IPL transmission asset sale.
• Tax Audit Outcome: Monitor the resolution of the IRS audit regarding the $257 million Brazil capital loss deferral and its potential impact on future tax liabilities.
• Environmental Compliance Costs: Track the finalization of Wisconsin RACT and BART rules and the associated capital expenditure requirements for WPL's generating facilities.
• Winter Storm Cost Recovery: Confirm whether IPL will seek rate recovery for the $44 million in incremental storm-related costs in future rate cases.
• Debt Maturity Profile: Review the company's plan to retire short-term debt using proceeds from the anticipated $300 million long-term debt issuance by WPL in the second half of 2007.