Mahalo
Los Angeles, CA

CARBON UNDERGROUND (The Carbon Underground)

EIN 46-5582094
Environment & Animal Welfare Local Food & Sustainable Farming Women & girls
Mission

To reverse climate change by restoring soil health at scale—drawing atmospheric carbon back into healthy soils through regenerative agriculture, education, partnerships and consumer engagement.

IRS-recognized 501(c)(3) public charity Contributions are tax-deductible

About CARBON UNDERGROUND (The Carbon Underground)

The Carbon Underground (TCU) is a U.S.-based 501(c)(3) nonprofit headquartered in Los Angeles that promotes soil restoration and regenerative agriculture as scalable solutions to climate change. The organization operates public-facing programs (most notably Adopt‑A‑Meter) and partners with farmers, research institutions, companies and NGOs to accelerate adoption of regenerative practices. The organization's EIN was verified to match IRS records (Tax ID #46-5582094) and TCU has maintained an active web presence and donor-facing fundraising programs since its 2014 tax-exempt ruling. In recent filings and public reporting (2023–2024) TCU continued program activity while reporting modest annual revenues and partnerships that fund on-the-ground soil restoration projects. TCU emphasizes measurable soil-restoration outcomes, corporate and NGO partnerships (including industry coalitions for regenerative sourcing), and targeted support for women farmers and smallholder cooperatives through its Adopt‑A‑Meter crowdfunding and grantmaking efforts.

Notable achievements

Adopt‑A‑Meter scale-up

Built and scaled the Adopt‑A‑Meter crowdfunding platform to fund on-the-ground soil restoration; public materials report millions of meters adopted and restored through partner projects and consumer donations.

Soil Carbon Initiative co‑development

Co‑developed a verifiable Soil Carbon / regenerative agriculture standard in collaboration with industry and nonprofit partners to provide a consistent definition and measurement approach for regenerative sourcing.

Strategic global partnerships

Secured multi‑sector partnerships with NGOs, research centers and private‑sector actors (including programs with American Farmland Trust, Navdanya and several buyer/brand partners) to advance regenerative practices and support women farmers in multiple countries.

At a glance

Total assets
$188K
Annual revenue
$76K
Tax status
501(c)(3)Public charity
EIN
46-5582094
Location
Los Angeles, CA
On Mahalo since
April 2026

Financial figures from the IRS Business Master File, the IRS’s registry of tax-exempt organizations.

Recognition

Maintains an active donor-facing website and public fundraising programs (Adopt‑A‑Meter) and is listed as a tax‑exempt 501(c)(3) organization (tax-exempt ruling since 2014).
Charity Navigator profile with a multi‑beacon score (reported ~89%) and a Three‑Star rating, indicating generally positive accountability and finance indicators.
Cited in industry and trade coverage and included as a partner or co‑signatory on regenerative agriculture collaborations and guidance used by brands and NGOs.

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