The power to quickly exceed that occurs up to a new one. There are people interested in the environment and thus was born the concept of environmental management and sustainable energy utilization.
The power that used to be in a short time that they could not keep up with emerging. Make people's attention to environmental responsibility, so the concept of environmental management and sustainable use of energy.
The energy used up in a short time to emerging during the assault. Make people pay attention to environmental responsibility, so the concept of management and utilization of sustainable energy.