We relamped our church with LED’s and noticed the same thing. About an 80% reduction in power consumption. Well worth it once you get over the shock of the initial cost.
Thackney: are you an electrician or sell bulbs? I noticed your profile pic and info relates to the electrical industry
You will note, however, that your oil or gas burner uses more oil. Incandescent lighting has an added benefit of 100% efficient resistive heating.