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ENI S.p.A. Form 6-K Summary

Business Context and Reporting Period

This Form 6-K, filed on March 1, 2006, reports the preliminary unaudited consolidated results for ENI S.p.A. for the full year and fourth quarter ended December 31, 2005. The results are prepared in accordance with International Financial Reporting Standards (IFRS). The filing also includes a press release dated February 15, 2006, regarding an administrative sanction by the Italian Antitrust Authority.

Key Financial Metrics (Full Year 2005)

Material Changes vs. Prior Period

• Revenue Growth: Driven by higher realizations in dollars (Brent crude up 42.3% for the year) and increased sales volumes across all segments.
• Profitability: Reported net profit increased 24.5%. Adjusted net profit, which excludes inventory holding gains and special items, rose 39.2% to €9.25 billion.
• Production: Oil and gas production grew 7% to 1.737 million boe/d, driven by ramp-ups in Libya and Angola. Excluding entitlement effects from higher oil prices, growth was 9%.
• Reserves: Net proved reserves decreased by 381 million boe to 6.84 billion boe. This decline was primarily due to a 478 million boe adverse impact from higher oil prices affecting entitlements in Production Sharing Agreements (PSAs). Excluding price impacts, the reserve replacement ratio was 115%.
• Segment Performance:
  • Exploration & Production: Operating profit up 53.6% due to higher prices and volumes.
  • Gas & Power: Operating profit down 3.1% due to regulatory fines and price caps, despite volume growth.
  • Refining & Marketing: Operating profit up 71.9% (reported) but replacement cost profit down 51.7% due to declining refining margins and special charges.

Guidance, Outlook, and Risks

• 2006 Outlook: Management forecasts continued growth in liquids and natural gas production, particularly in Libya, Angola, Egypt, Nigeria, and Norway. Natural gas sales volumes are expected to increase outside Italy. Capital expenditure is expected to increase from the 2005 level of €7.4 billion.
• Regulatory Risks (Antitrust): On February 15, 2006, the Italian Antitrust Authority imposed a €290 million fine on Eni regarding the non-completed development of the Tunisian gas pipeline (TTPC). Eni intends to appeal this decision. This fine was recorded as a special charge in 2005 results.
• Regulatory Risks (Energy Authority): Eni recorded a provision for the estimated adverse impact of a decision by the Italian Authority for Electricity and Gas affecting natural gas prices to residential customers and wholesalers.
• Environmental & Insurance: Significant special charges were recorded for environmental provisions (€835 million for the year) and higher insurance premiums due to an exceptionally high accident rate in the 2004-2005 period.
• Post-Closing Event: On February 24, 2006, Saipem agreed to purchase Eni's entire stake in Snamprogetti, expected to close in March 2006.

Investor Verification Checklist

• Antitrust Appeal: Verify the status and potential outcome of Eni's appeal against the €290 million Italian Antitrust fine.
• Reserve Replacement: Confirm the sustainability of the 115% reserve replacement ratio excluding price impacts, given the volatility of oil prices affecting PSA entitlements.
• Refining Margins: Monitor the trend of European refining margins, which declined 12.2% in Q4 2005, impacting the Refining & Marketing segment's replacement cost profit.
• Regulatory Pricing: Track the final resolution of the Italian Authority for Electricity and Gas decision regarding natural gas price formulas and its long-term impact on the Gas & Power segment.
• Capital Allocation: Review the proposed 2006 capital expenditure increase and its allocation between exploration, development, and infrastructure upgrades.