My sister has a condo unit whose building used to have Demand Charge of only 40 Base in 2010. Then suddently the Base became 115 in 2011 up to now. Does anyone have an idea why? The building admin didn't understand why because they are not technical people. Did the power utility increase the power lines levels outside or did they adjust the load or something. What could they have possibly done to make such big Demand Changes? There is no additional load in the building. No one has a clue. Electricity has jump to twice. Why did Demand Charge jumped from 40 to 115 all of a sudden? Thanks.