Balancing fluctuating power sources

It is necessary to combine and integrate technologies since no single renewable energy source is sufficient to be able to stand alone. Non-grid applications will be applied as well. Because of fluctuation of wind and solar power, integration of new energy including non-grid solutions were important to offer a steady consumption of power. Proper storage and comprehensive utilization of power were needed to make full use of power. Several types of storage of power was introduced and a certain example for Combined Heat and Power (CHP) was given in this paper. In Demark, combined heating/cooling and power system was used to make improvement of energy efficiency, in which hot water was used as medium. By district heating and CHP, the rate of energy effeciency was increased about 50%, compared with conventional power plants. Fossil fuel was replaced with biomass storage to solve the enviornmental problems. Average use of CHP was just 9%, so CHP could be developed greatly in the future.