Energy efficiency simply means using less energy to do the same task or produce the same result, and thereby eliminating energy waste. Energy-efficient buildings and homes use less energy to heat and cool. Energy-efficient appliances and electronics use less energy to run. Energy-efficient businesses use less energy to produce their goods. Simply put, energy efficiency reduces energy costs for consumers and improves the competitiveness of our businesses. 

Energy efficiency is also one of the easiest and most cost effective ways to reduce the environmental effects of consuming energy. It cleans the air we breathe by reducing the amount of carbon dioxide. The department is working with universities, businesses and the U.S. Department of Energy's National Laboratories to develop new, energy-efficient technologies while boosting the efficiency of current technologies on the market. Learn more about work being done in Missouri related to improving energy efficiency. 

Home Energy Audits
Find an energy auditor to determine your homes energy efficiency
Home Energy Efficiency
Ways you can make your home more energy efficient
Commercial Buildings
Ways to increase energy efficiency in commercial buildings
Energy Codes by Jurisdiction
Minimum standards for the energy efficiency of buildings and homes in Missouri
Energy Codes Training Resources
Residential and commercial energy code training opportunities
Missouri Home Energy Certification
Voluntary approach to promote energy efficient homes through meaningful recognition
Green Building Registry®
Add home energy information to the registry for a custom-designed Missouri scorecard
Energy Financial Opportunities
Financial assistance to reduce your energy consumption and become more energy efficient
Inflation Reduction Act (IRA) Home Energy Rebates
Rebates on select home improvement projects that can lower your energy bills
Home Performance with ENERGY STAR®
A trusted approach to help contractors and energy programs deliver energy upgrades
Energy Efficiency Day
Make a difference