NEW YORK--(BUSINESS WIRE)--Fitch Ratings has affirmed the Issuer Default Ratings (IDRs) on Eversource Energy (ES; 'BBB+') and its utility subsidiaries: The Connecticut Light and Power Company (CL&P; 'BBB+'), NSTAR Electric Company (NSTAR Electric; 'A'), NSTAR Gas Company (NSTAR Gas; 'A-'), Public Service Company of New Hampshire (PSNH; 'BBB+'), and Western Massachusetts Electric Company (WMECO; 'BBB+'). A detailed list of rating actions is shown at the end of this release. In addition, Fitc