Our approach
In recent years, the US passed several major pieces of legislation that fund public investment and provide incentives for expanded private investment in the manufacture and deployment of greenhouse gas emission-reducing technologies. Investment in a lot of these technologies has grown by many-fold. Unfortunately, there has been a shortage of timely, robust, and methodologically consistent data to track actual investments in clean technology and infrastructure. The CIM was created to fill this gap.
To provide a historical baseline against which to assess recent clean investment developments in the US, the CIM includes all investments in our covered technologies since 2018. This results in a database with roughly 20,000 individual facilities, 3 million zero-emission vehicle (ZEV) registrations, 20 million heat pump sales, and 4.5 million distributed electricity generation or storage installations.
Explore the database
The Clean Investment Monitor is updated on a quarterly basis. In our most recent update, through Q4 of 2023, we tracked a record $239 billion in new actual investment in the manufacture and deployment of clean energy, clean vehicle, building electrification and carbon management technology in the US over the past year, a 38% annual increase. $67 billion of this investment occurred in just the fourth quarter of 2023, a 40% increase relative to the same period last year.