Hours Of Operations Green Mountain Energy Oregon Portland Green Mountain Energy Hours of Operation and Locations in Portland, OR 4.9 - 20 votes 1 Locations in Portland www.greenmountain.com Green Mountain Energy Hours Category: Home & Garden Green Mountain Energy - Portland, OR 97204 506 Sw 6th Ave(971) 544-0351 View Store Details Explore PortlandView More Apparel CostcoMarshallsTJ MaxxRoss Dress for LessDd's DISCOUNTS Sports CostcoTargetSports AuthoritySheplersNew Balance Jewelry CostcoMarshallsBurlington Coat FactoryCatoDeb Shops Recommend For You Green Mountain Power Henry B Ball Jewelers Heritage Propane High Plains Power Home Sense Idaho Urgent Care Indianapolis Power & Light Company Jax Mercantile Lee County Electric Co-Op Matheson Tri-Gas