Oak Parkers are invited to learn about easy steps to reduce energy consumption at a special workshop scheduled for 7 – 9 p.m., Wed. March 21, at Village Hall, 123 Madison St. Participants will have an opportunity to ask contractors about energy efficient upgrades. Prospective attendees are asked to RSVP to firstname.lastname@example.org or 855.946.7228. Residents who would like to get a head start on conserving energy can calculate energy consumption with a personalized energy calculator at www.theenergybills.org. The workshop is sponsored by not-for-profit Energy Impact Illinois, the Chicago Metropolitan Agency for Planning and the Village’s Housing Division.