Alternative energy systems can be either passive (uses no conventional energy sources to function) or active (uses a combination of natural and conventional energy sources). Passive systems are integral to the building's design. Active systems are added to the finished building. Both types of systems rely on the energy efficiency of the building structure to keep their costs low and their performance high.
Types of most commonly installed alternative energy systems include solar domestic hot water heating systems, solar space heating systems, solar photovoltaic electricity generating systems, wind electricity generating systems, geothermal HVAC systems, and hydroelectric systems.
Active alternative energy system manufacturers are consistently improving system efficiencies and reducing costs. Federal, state, and municipal governments and some utilities offer various incentives for the installation of alternative energy systems.
What Makes Alternative Energy Green?
Displaces energy produced from conventional energy sources.
Reduces greenhouse gas emissions and other pollutants
5 Considerations for Consumers: