2005 Annual Report UIL HOLDINGS CORPORATION





Transfer, Registrar and Dividend Disbursing Agent American Stock Transfer & Trust Company Telephone Inquiries: 800.937.5449 or 718.921.8200 Email Address: info@amstock.com Website Address: www.amstock.com Address Shareowners' Inquiries to and Send Certificates for Transfer and Address Changes to: American Stock Transfer & Trust Company 59 Maiden Lane New York, NY 10038 Dividend Reinvestment & Direct Stock Purchase and Sale Plan Investors interested in obtaining information regarding the benefits of participating in Investors Choice, a Dividend Reinvestment & Direct Stock Purchase and Sale Plan for UIL Holdings Corporation's common stock, may write to: American Stock Transfer & Trust Company 59 Maiden Lane New York, NY 10038 Annual Meeting The Annual Meeting of Shareholders of UIL Holdings Corporation will be held at 10:00 a.m. on Wednesday, May 10, 2006 at Quinnipiac University, 275 Mount Carmel Avenue, Hamden, CT. Investor Relations Hotline For information on UIL's earnings, news releases, media articles and dividend information, including ex-dividend dates and dividend payment dates, call: From within the New Haven area: 203.499.3333 or From outside the New Haven area: 800.7.CALL UI (722.5584) Analyst Contact Susan E. Allen UIL Holdings Corporation P.O. Box 1564 New Haven, CT 06506-0901 Telephone: 203.499.2409 Fax: 203.499.2414 Email address: UIL@uinet.com Stock Listing New York Stock Exchange; Common Stock (UIL) General Counsel Wiggin and Dana LLP One Century Tower P.O. Box 1832 New Haven, CT 06508-1832 Telephone: 203.498.4400 Independent Registered Public Accounting Firm PricewaterhouseCoopers LLP 125 High Street Boston, MA 02110 Telephone: 617.530.5000