The Clean Investment Monitor

The Clean Investment Monitor (CIM) is a joint project of Rhodium Group and MIT’s Center for Energy and Environmental Policy Research (CEEPR). The CIM tracks public and private investments in the manufacturing and deployment of the full landscape of climate technologies in the United States. Through this data and analysis, the CIM provides insights into investment trends, the effects of federal and state policies, and on-the-ground progress in the US towards net-zero greenhouse gas emissions.

Clean energy is quickly becoming one of the largest industries in the US. Across the economy, public and private investment in decarbonization is reaching new records—accelerating manufacturing and the adoption of the technologies needed for clean electricity and transportation, building electrification, low-emission industrial production, and carbon management. The CIM comprehensively catalogs these investments in a wide range of emission-reducing technologies and their input components.

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.

Our interactive database and data visualization and mapping platform enables users to explore clean investment trends across the US and across the full landscape of technologies. The data is organized by technology, investment type, US state location, funding status, and time period. In addition, we publish regular reports summarizing key investment trends and assessing different themes and market and policy developments.