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Things found over the years:

Besides usage billing and peak-shaving, discoveries are made during installation. Further deterioration of equipment is prevented and potential problems are detected right away. Often the mM itself is questioned, but it doesn't lie. Further investigation always yields something that would ordinarily escape detection.

  • compressed air costs were much higher than expected
  • compact fluorescent (CFL) bulb replacements may have lousy power factor (.5-.7)
  • unusual amenity sells houses, everyone has counter tops
  • laundromat machines' coinboxes were bypassed
  • plasma television uses 5 times as much as old set
  • large heater running in the summertime
  • buried wire with bad insulation drew current and could be a shock hazard
  • nest in chiller duct, ran much more than other similar units
  • faulty pool pump timer - runs 24 hr
  • theft of power (residential)
  • meter tampering (commercial)
  • utility meter error (commercial) that actually resulted in a refund!
  • passive power factor correction possible with 25' of romex
  • improved power factor passively by rearranging branch loads
  • rv draws power when all shut off
  • homeowner not truthful regarding high bill complaint
  • heat recovery pump not running (water heater operating at same time as a/c)
  • idle home theater draws 50 watts
  • a/c and heating strip on at the same time!
  • outside (common) light charged to tenant
  • improved power factor passively by rearranging branch loads
  • plumbing leak - well runs too much
  • surge protector leaking, consuming power
  • server bay seriously overloading circuit
  • compressor not cooling - no gas
  • power conditioner makes some improvement but not cost-effective
  • 3-phase power saw running on 2 phases
  • MRI scans sequenced to flatten peak
  • bad water heater element
  • photo sensor not shutting off flood lights
  • classroom pc monitors not shutting off with pc's
  • unknown circuit, no complaint when cut off
  • hot tub heater electrifying water - no GFI
  • piano damp chaser de-tuning instrument
  • hot water leak - excessive heating cycles
  • open neutral (2x)
  • energy retrofit successful (>10x)
  • energy retrofit unsuccessful (3x)
  • holiday display costly to run all night
  • water cooler not cooling much, runs 24x7
  • better to preheat pizza oven before 8am and vent room heat before a/c on
  • draft from bad window seals costs $83/month for heating, likely same for cooling
  • sprinkler control shorted
  • collating copier draws as much as Dr's office - now use 2 hrs/day