Advanced Energy Works (AEW), formerly Advanced Energy Economy 4, is the lobbying branch of the environmental advocacy business league Advanced Energy Economy. It advocates for policy that promotes a transition to relying on environmentalist energy and supports the workers within the related industries.
As an advocacy arm of Advanced Energy Economy, AEW’s executives and board of directors overlaps with Advanced Energy Economy’s.  AEW coordinates its advocacy campaigns with and in support of Advanced Energy Economy. 
Tom Steyer, Advanced Energy Economy co-founder, is an American hedge-fund billionaire and created AEE to raise awareness of environmentalist energy. Nat Kreamer, Advanced Energy Economy CEO, described the “Advanced Energy” it advocates for is any form of technology that allows the United States to replace conventional energy with environmentalist energy and technology that minimizes energy consumption. 
In 2018, Advanced Energy Economy 4 changed its name to Advanced Energy Works to “relaunch” the focus of its advocacy. This decision was made to increase advocacy that focuses on making jobs in the environmental energy industries sustainable. 
Advanced Energy Works coordinates with its members to contact policy makers to place protections on environmental energy businesses, “whether advanced energy succeeds or fails.” AEW also campaigns in support of candidates that support transitioning to environmentalist energy through “advanced energy technology” and campaigns in opposition of candidates who do not. 
AEW seeks donations from environmentalist energy industry workers, claiming that they will be represented in AEW’s advocacy and help their industries expand.  AEW has used the COVID-19 pandemic as an opportunity to advocate for government spending on environmentalist energy businesses, to include prioritizing the hiring of ethnic minorities to meet so-called racial equity standards, and overall move the United States closer to relying on environmentalist energy. 
AEW has campaigned to petition the state of California to expand its effort to transition to environmentalist energy by demanding that it includes its infrastructure to support environmentalist energy vehicles, including public transportation, and offering incentives to support this transition. The campaign proposes spending $1.5 billion to incorporate these changes. 
Heather O’Neill serves as the CEO of Advanced Energy Works and as president for Advanced Energy Economy. She also serves as a council member for Earthjustice and board member for Climate Action Reserve. She previously served as a program officer for the Robertson Foundation. 
Nat Kreamer is the CEO of Advanced Energy Economy and AEW.  He is the founder and CEO of Fairtide Renew, an environmentalist-focused investment firm, and has previously worked for other environmentalist investment companies. Kreamer has also worked as an environmentalist energy business consultant and served as the chairman for the Board of Directors of the Solar Energy Industries Association. 
Between 2013 and 2016, Advanced Energy Works reported $16,500,175 in revenue and $16,307,830 in total expenses. 
In 2017, AEW reported $19 in total revenue, and in 2018, AEW reported $390,903 in total revenue.