Schedule II
AGL Resources Inc. and Subsidiaries
Valuation and Qualifying Accounts — Allowance for Uncollectible Accounts and Income Tax Valuation for
Each of the Three Years in the Period Ended December 31, 2009.
| In millions | Allowance for uncollectible accounts |
Income tax valuation |
| Balance at December 31, 2006 | $ 15 |
$3 |
| Provisions charged to income in 2007 | 19 |
— |
| Accounts written off as uncollectible, net in 2007 | (20) |
— |
| Balance at December 31, 2007 | 14 |
3 |
| Provisions charged to income in 2008 | 27 |
— |
| Accounts written off as uncollectible, net in 2008 | (25) |
— |
| Balance at December 31, 2008 | 16 |
3 |
| Provisions charged to income in 2009 | 25 |
— |
| Accounts written off as uncollectible, net in 2009 | (27) |
— |
| Balance at December 31, 2009 | $ 14 |
$ 3 |