Energy Glossary .
Speed control is obtained by adjusting the frequency of the voltage applied to the motor.
This approach usually saves energy for variable-load applications. Optimum Utility Systems can assess whether the energy savings is worth the additional equipment cost. See related article. Optimum Utility Systems can design useful applications for biogas such as heating, absorption cooling, and generating electricity using an engine or microturbine. Optimum Utility Systems can specify energy-efficient combinations of lamps and ballasts for new and retrofit applications in manufacturing office and plant environments.