Overview

What they do
CSL Capital Management, LP is an SEC-registered investment firm focused on small to mid-sized energy businesses in the United States. Headquartered in Houston, Texas, the firm has deep sector expertise in the energy industry and takes a hands-on approach to its investments. Its portfolio includes a range of buyout, growth, recapitalization, and other investments backed by financial institutions, endowments, foundations, family offices, and high-net-worth individuals. Since its inception in 2008, the firm has raised in excess of $1.7 billion in equity capital and commitments across various investment vehicles.
cslenergy.com
What they look for
CSL Capital Management, LP focuses on investing in small to mid-sized U.S. energy businesses, particularly in energy services and equipment, using a hands-on approach emphasizing organic growth and strategic initiatives.
cslenergy.com
Stage
Seed, Series A, Series B+
cslenergy.com
Sectors
Climate
cslenergy.com
Based
Houston, US
cslenergy.com

Sources

2026-08-27cslenergy.comCSL Capital Management, L.P. ('CSL') is an SEC registered investment firm focused on energy…
2026-08-27cslenergy.comWe prefer investments where we can add significant value to the business and we are Partners…
2026-08-27cslenergy.comPlease submit your executive summary or business plan by emailing us at [email protected] .…

Portfolio, cheque size and the rest

The companies they have backed, the cheque they write, and whether they are deploying right now.

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