The world needs a new source of energy, an unspillable source.

Are there weekday rates and weekend rates when using electricity in your home?

Someone posted a question on the message board asking how to conserve and be more efficent in the use of their washing machine at home… several people responded saying to use it only during non peak hours (early morning and weekend mornings) due to businesses being closed and the rates are cheaper… regarding the rates being cheaper – is this true?
If you do have peak rates can you indicate where you live and what company you have? I live in Virginia (Northern) and have Dominion Virginia Power.