The demand response is using for the customers to reducing their cost of electricity when they are using the power. it can give an opportunity for the consumers to make plans about how to balance their power need or avoid their cost during the busy time.

The Whole purpose of demand response is to balance supply and demand. it can help the people to know about how to lower the retail rates. The demand response can provide those benefits for them.

Demand response has been using for the United State for couple years and it is good because there are tons of people who are rely on the power supple and if there are some natural disaster happen, it will be affect the supply and demand for the electricity.  so it is good to know how to prevent the issues happen.

http://energy.gov/oe/technology-development/smart-grid/demand-response

http://en.wikipedia.org/wiki/Demand_response