-- We are assigning our final 'A' rating to M-S-R Energy Authority's $201.035 million series 2009A, $500.2 million series 2009B, and $200.385 million series 2009C gas revenue bonds with a final maturity date of Nov. 1, 2039. -- The rating and outlook on M-S-R Energy Authority's gas revenue bonds is currently linked to the rating on Citigroup Inc. (A/Stable/A-1). This reflects the current rating and outlook on Citigroup as the guarantor of Citigroup Energy Inc.'s (CEI; not rated) obligations under the gas purchase agreement. Bond payment depends on the ability of several different counterparties to perform under the transaction documents. NEW YORK (Standard&Poor's) Sept. 10, 2009--Standard&Poor's Ratings Services said today it assigned its final 'A' rating