Free energy-efficiency classes Resolve to control energy bills in the new year. Join us for our free seminar Fundamentals of Energy & Managing Costs (PDF), on Jan. 25 in Salem or Jan. 26 in Portland. Register by email, or call 503-464-8020. This topic kicks off our 2012 lineup of free, half-day energy-efficiency classes that are co-sponsored by Energy Trust of Oregon, the Northwest Energy Efficiency Alliance and Better Bricks.