this is what bob hain he to say. >> about 15% it for maryland and 10% for residents in the district of columbia and that is a win-win situation. we were able to take advantage of the lower energy costs. >> you have to imagine that going to the electricity store and stocking up when there is a sale. pepco bought the boxes of power and can pass discounts to customers. it works for $10 a month for d.c. customers. the decrease takes affect in june. >> and savings is a good thing. how long will the prices last? >> the rates are adjusted once a year and i'm told that it should last until next june. you have to remember, though, we're talking about a portion of the bill, the cost of power makes up 71% of the bill and as we know, there are many other add-on fees and taxes and it's possible they could go up and that would if site the savings. >> we motioned this at the introduction that dominion virginia wants to increase the rates. what is going on there? >> reporter: dominion virginia operates differently and generates, creates most of the power it supplies to customers. dominion virginia has