Exhibit 99(d) SCHEDULE II -VALUATION AND QUALIFYING ACCOUNTS AND RESERVES Additions ----------------------------------- Balance, Charged to Charged to Other Balance, Description Jan. 1 Expense Accounts (1) Deductions (2) Dec. 31 - ------------------------------------------------------------------------------------------------------------------------------- (in thousands) Valuation and Qualifying Accounts Which are Deducted in the Balance Sheet From the Assets to Which They Apply: Accumulated Provision for Uncollectible Accounts: ------------------------------------------------- Alliant Energy -------------- Year ended Dec. 31, 2002 $7,891 $8,115 $1,244 $11,731 $5,519 Year ended Dec. 31, 2001 4,341 9,317 1,510 7,277 7,891 Year ended Dec. 31, 2000 3,048 3,644 1,616 3,967 4,341 IP&L ---- Year ended Dec. 31, 2002 $1,883 $3,115 $-- $3,716 $1,282 Year ended Dec. 31, 2001 1,316 7,206 -- 6,639 1,883 Year ended Dec. 31, 2000 1,841 3,273 -- 3,798 1,316 WP&L ---- Year ended Dec. 31, 2002 $1,543 $4,067 $1,244 $4,626 $2,228 Year ended Dec. 31, 2001 8 37 1,498 -- 1,543 Year ended Dec. 31, 2000 6 2 -- -- 8 Note: The above provisions relate to various customer, notes and other receivable balances included in various line items on the respective Consolidated Balance Sheets. Other Reserves: Accumulated Provision for Injuries & Damages, Workers' Compensation, Litigation and Other Miscellaneous Reserves: ----------------------------------------------------------------------------------------------------------------- Alliant Energy -------------- Year ended Dec. 31, 2002 $7,596 $10,221 $-- $4,079 $13,738 Year ended Dec. 31, 2001 12,489 3,047 -- 7,940 7,596 Year ended Dec. 31, 2000 8,963 8,505 -- 4,979 12,489 IP&L ---- Year ended Dec. 31, 2002 $4,618 $4,551 $-- $1,994 $7,175 Year ended Dec. 31, 2001 4,825 1,712 -- 1,919 4,618 Year ended Dec. 31, 2000 5,123 2,766 -- 3,064 4,825 WP&L ---- Year ended Dec. 31, 2002 $2,574 $4,011 $-- $1,732 $4,853 Year ended Dec. 31, 2001 2,689 1,266 -- 1,381 2,574 Year ended Dec. 31, 2000 2,994 1,282 -- 1,587 2,689 (1) In 2000, Alliant Energy acquired EUA Cogenex Corporation and assumed a provision of $1.6 million. In accordance with its regulatory treatment, certain amounts provided by WP&L are recorded in regulatory assets. (2) Deductions are of the nature for which the reserves were created. In the case of the accumulated provision for uncollectible accounts, deductions from this reserve are reduced by recoveries of amounts previously written off. 58