We lowered our ratings on the Republic of Portugal to BBB-/Negative/A-3 on March 29, 2011. We are lowering our long- and short-term ratings on Portuguese electricity and gas transmission system operator REN-Redes Energeticas Nacionais (REN) to 'BBB-/A-3'. The negative outlook reflects that on the sovereign. We could lower our ratings on REN again if we downgrade Portugal further or if REN's stand-alone credit profile deteriorates. PARIS (Standard&Poor's) April 1, 2011--Standard&Poor's Ratings Services lowered to 'BBB-/A-3' from 'BBB/A-2' its long-term and short-term corporate credit ratings on REN-Redes Energeticas Nacionais, SGPS, S.A. (REN), the monopoly owner and operator of Portugal's electricity and gas transmission networks. At the same time, we removed the ratings from CreditWatch, where we had