Standard & Poor's rated SoCal Gas near the top and Calpine at the bottom of its analysis of utility and power companies' financial wherewithal. The ratings agency ranked the companies from strongest to weakest on a 1-to-10 scale, with 1 as "excellent" and 10 as "vulnerable." The August 4 findings of current credit ratings and outlooks include: ? SoCal Gas, with an A rating, stable outlook, and score of 1 on the scale. - San Diego Gas & Electric, with an A rating, stable outlook, and score of 5. - Pacific Gas & Electric, with a BBB rating, stable outlook, and score of 6. - Sempra Energy, with a BBB rating, stable outlook, and score of 7. - Williams, with a BB- rating, positive outlook, and score of 8. - Edison Mission Energy, with a B+ rating, positive outlook, and score of 9. - NRG Energy, with a B+ rating, stable outlook, and score of 9. - Mirant, with a B+ rating, negative outlook, and score of 9. - Reliant, with a B rating, negative outlook, and score of 9. - Calpine (in bankruptcy), with a D rating, no outlook, and score of 9.