new york coalition u.s. state mount broad legal challenge call trump administration illegal suspension rule improve energy efficiency ceiling fan portable air conditioners products challenge also join environmental group come u.s. department energy last month delay standards propose obama administration reduce air pollution operate cost associate products ten democratic attorneys general plus new york city pennsylvania regulator monday notify energy secretary rick perry plan sue 60 days stall propose standards air compressors commercial boilers portable air conditioners power supply walk-in coolers freezers group exclude maryland friday petition federal appeal court new york force administration implement ceiling fan efficiency standards take effect two weeks ago delay sept. 30. implementation delay white house chief staff reince priebus jan. 20 direct federal agencies put new regulations hold new leaders could review obama administration issue similar directive 2009. energy department say comment pending litigation new york attorney general eric schneiderman say adopt common-sense efficiency standards would dramatically reduce air pollution include carbon dioxide mercury methane say enough electricity would save serve 36 million households annually save consumers businesses close 24 billion leave final rule regulatory limbo real negative economic environmental consequences essentially frustrate congress energy conservation goals state say letter perry letter sign officials california connecticut illinois maine maryland massachusetts new york oregon vermont washington new york city pennsylvania department environmental protection consumer federation america natural resources defense council sierra club monday send perry similar letter threaten litigation letter accuse energy department ignore obligation federal law publish final efficiency rule federal register notice publish last month energy department say perry begin job march need time conduct review consideration new regulations petition new york et al u.s. department energy et al 2nd u.s. circuit court appeal 17-918. new york state take trump energy efficiency