About Us

Partner Energy Headquarters

Company Background

Meet Our Team
Mission Statement

Partner Energy was founded in 2009 by real estate and engineering professionals, Tony Liou and Joe Derhake. Tony and Joe started Partner Energy after noticing an increase in demand for energy efficiency and sustainability consulting services. The demand arose due to the onset of complex energy efficiency and disclosure laws, rising energy costs, and global awareness of climate change.We can help you achieve your goals.






Partner Energy’s headquarters is based in Southern California with a network across the nation. Our professionals work with building owners and users to increase asset values, lower ownership costs, and promote environmental stewardship. By recommending and implementing fiscally responsible energy efficiency measures, our team helps clients reduce energy usage and energy costs. Our recommended solutions are economically sound, as we take into consideration the client’s energy goals as well as their investment return criteria.


Partner Energy, Inc. (Partner Energy) is a Small Business Enterprise and a Minority-Owned Business, certified by the Supplier Clearinghouse for the Utility Supplier Diversity Program of the California Public Utilities.ENERGY STAR Partner logo

Partner Energy is an ENERGY STAR® Partner, able to use the ENERGY STAR Portfolio Manager® for benchmarking and target setting and to certify qualified high efficiency buildings for the ENERGY STAR® label.

Partner Engineering and Science, Inc.

Partner Energy works alongside Partner Engineering and Science, Inc. The sister company was founded in 2007 and is a market-leading provider of environmental, engineering, and construction risk management services. With 40 offices across North America and Western Europe, Partner helps commercial real estate clients make smart investments, manage risk, and bring projects to life.