NEW YORK--(BUSINESS WIRE)--Fitch Ratings has affirmed Empresa Electrica Guacolda S.A.'s (Guacolda) foreign and local currency Issuer Default Ratings (IDRs) at 'BBB-'. Fitch also affirmed the long term international bond rating for Guacolda's USD500 million senior unsecured notes at 'BBB-'. The Rating Outlook is Stable. KEY RATING DRIVERS Guacolda's ratings reflect the generation company's (Genco) solid business position, which is supplemented by the efficiency of its operations, competitive gen