CMS-PB

Business Context and Reporting Period

This Form 10-Q covers the quarterly period ended September 30, 2006, for CMS Energy Corporation (the parent holding company) and its subsidiary, Consumers Energy Company (the regulated utility). CMS Energy operates primarily in Michigan through three segments: Electric Utility, Gas Utility, and Enterprises (diversified energy businesses). The company's strategy focuses on improving its balance sheet, reducing debt, and optimizing cash flow through asset sales, while managing regulatory and commodity price risks.

Key Financial Metrics

Note: Segment results for the three months ended Sept 30, 2006 show Electric Utility income of $93 million, Gas Utility loss of $(20) million, and Enterprises loss of $(132) million.

Material Changes Versus Prior Period

• Net Loss Improvement: The net loss for the three months ended September 30, 2006, was $103 million, a significant improvement from the $265 million loss in the same period in 2005. For the nine months, the loss narrowed to $58 million from $88 million.
• Asset Impairment Charges: The primary driver of the improved loss was a reduction in asset impairment charges. In Q3 2006, CMS Energy recorded a $169 million impairment on its investment in GasAtacama (Argentina/Chile). This compares to a $385 million impairment charge associated with the MCV Partnership recorded in Q3 2005.
• Electric Utility Performance: Electric utility earnings increased due to a December 2005 rate order, the expiration of residential rate caps, and the return of customers from alternative energy suppliers to full-service rates. These gains were partially offset by higher operating expenses and milder weather.
• Gas Utility Performance: Gas utility results declined due to reduced deliveries caused by warmer weather and increased customer conservation efforts in response to high gas prices.
• Enterprises Segment: The Enterprises segment loss narrowed significantly ($128 million improvement for the quarter) primarily due to the absence of the large 2005 MCV impairment. However, results were negatively impacted by mark-to-market losses on long-term gas contracts and hedges at the MCV Partnership and CMS ERM.
• Tax Resolution: A resolution of an IRS income tax audit in 2006 provided a $62 million benefit, improving results compared to 2005.

Guidance, Outlook, and Risks

Management Commentary and Strategy

Management continues to focus on managing cash flow, reducing parent company debt, and growing earnings. Key strategic actions include:

• Palisades Nuclear Plant Sale: In July 2006, CMS Energy agreed to sell the Palisades nuclear plant to Entergy for $380 million, with a 15-year power purchase agreement for the plant's output. The sale is targeted to close by May 1, 2007. Proceeds will be used to reduce utility debt and benefit customers.
• MCV Partnership Sale: An agreement was reached to sell CMS Energy's interests in the MCV Partnership and FMLP for $60.5 million. The sale is expected to close by the end of 2006, providing a $56 million positive cash flow impact and reducing exposure to high natural gas prices.
• Debt Reduction: In 2006, the company retired $76 million of senior notes and extinguished $129 million of related party notes.

Outlook

• Electric Deliveries: Projected to decline about 1% in 2006 due to weather and economic conditions, with long-term growth expected at 1.5% annually.
• Gas Deliveries: Projected to decline 4% in 2006 (weather-adjusted) due to conservation and economic factors.
• Reserve Margin: Planning for an 11% reserve margin for summer 2007.

Risks and Contingencies

• GasAtacama Impairment Risk: The investment in GasAtacama remains exposed to Argentine government restrictions on natural gas exports to Chile. If conditions do not improve, further impairment may be necessary.
• MCV Partnership Viability: The MCV Partnership has negative equity due to impairments and mark-to-market losses. High natural gas prices continue to threaten its financial performance. CMS Energy may exercise a "regulatory out" provision in 2007 to limit payments, which could lead to the termination of the power purchase agreement.
• Regulatory and Legal: The company faces ongoing investigations regarding round-trip trading and gas price reporting (DOJ, SEC). There are also significant environmental compliance costs related to the Clean Air Act and potential liabilities from the Bay Harbor site.
• Liquidity: Working capital is challenged by volatile natural gas prices, as inventory purchases require liquidity before cost recovery from customers.

Important Facts for Investor Verification

• Closing of Asset Sales: Verify the regulatory approval and closing dates for the Palisades nuclear plant sale and the MCV Partnership/FMLP sale, as these are critical for cash flow and debt reduction plans.
• GasAtacama Status: Monitor the status of natural gas supply to GasAtacama and any further impairment charges that may be required if Argentine export restrictions persist.
• MCV Partnership Financials: Track the MCV Partnership's negative equity and the potential impact of exercising the "regulatory out" provision on the power purchase agreement and reserve margins.
• Regulatory Rate Cases: Review the outcomes of pending Michigan Public Service Commission (MPSC) proceedings regarding gas rate relief and power supply cost recovery (PSCR).
• Legal Proceedings: Monitor the status of DOJ and SEC investigations into round-trip trading and gas price reporting, as well as securities class action lawsuits.