What IAM Carbonzero does

IAM Carbonzero, S.L. is a privately held Spanish project developer founded in 2020 and headquartered in Madrid. The company develops and operates biomethane (biogas) plants that convert agro-livestock organic waste into renewable methane injected directly into the Spanish natural gas network. As of the available data, IAM Carbonzero has a development pipeline of 20+ projects across 13 Spanish provinces (including Badajoz, Cáceres, Ávila, Soria, Almería, Lleida, Valladolid, Segovia, Madrid, Huesca, Pontevedra, A Coruña, and Navarra), with no plants yet operational and first facilities expected in 2026.

The core technology is anaerobic digestion of manure, crop residues, and agro-industrial byproducts (e.g., alperujo/olive pomace), followed by biogas upgrading to >95% methane purity. Plants comply with EU Best Available Techniques (MTD) per Implementing Decision 2018/1147, are designed under SFDR Article 9 and EU Green Taxonomy criteria, hold ISCC sustainability certification, and produce digestate (digerido) sold as biofertilizer under EU Regulation 2019/1009. Distinctive engineering includes advanced biofilters for odor control, fully sealed transport and storage systems, and strict input control with diet optimization to maximize methane yield.

IAM Carbonzero generates revenue on a project basis from three streams: (1) biomethane sales via grid injection (with BioCNG/BioLNG optionality for transport), (2) biofertilizer (digestate) sales to local farmers and agricultural cooperatives, and (3) carbon credit sales from avoided methane emissions. Capital is mobilized through project-finance structures, most notably a MAPFRE-backed investment fund covering 13 plants and a separate Bioenergy Agro Iberia fund extending activity across the Iberian Peninsula. GTM is enterprise project development: the team identifies sites with 15-25 km proximity to organic waste sources and gas network connections, negotiates land and feedstock agreements with farmers and agro-industry, and develops projects to a Ready-to-Build stage. Customers span four segments — agricultural producers, agro-industry, rural municipalities in 'España vaciada,' and gas network operators/distributors — with no single anchor customer disclosed.

Name

IAM Carbonzero

Legal name

IAM Carbonzero, S.L.

Website

https://iamcarbonzero.com

Company type

Private

Operating status

Operating

Headcount range

11–50 employees

Short description

IAM Carbonzero is a Madrid-based project developer building a portfolio of biomethane plants across rural Spain that convert agro-livestock waste into renewable grid-injected gas and biofertilizer, with first plants expected operational in 2026.

Ownership category

akta.pro rank

Product category

Renewable biomethane production and agricultural waste valorization

NAICS

Industrial Gas Manufacturing (32512)

SIC

Crude Petroleum & Natural Gas (1311)

akta.pro primary industry

Biofuels & Renewable Fuels Switching (Biomethane/RNG, Bio-oils, Sustainable Biomass) (EUABAJAD)

akta.pro secondary industries

Digestate Processing, Nutrient Recovery & Fertilizer Products (Struvite, Ammonia, Compost) (EUAAAEAL), Biogas Upgrading-to-Power (Biomethane-to-Power, Pipeline Injection + Power) (EUACAIAJ)

Keywords

• Biomethane production
• Anaerobic digestion plants
• Renewable natural gas
• Agricultural waste valorization
• Biofertilizer production

Headquarters

HQ city

Madrid

HQ country

Spain

HQ region

Europe

Offices1 record

Markets served

GTM type

B2B

Offering type

Hardware or Manufacturing

Cost components

Infrastructure, Technology or R&D, Personnel, Operations, Supply Chain, Marketing or Sales

Revenue model

1. Biomethane Sales: Production and sale of biomethane gas injected directly into the existing natural gas network. The biomethane (with >95% methane purity) is mixed with natural gas in the Spanish gas network. Also available as compressed (BioGNV/CNG) or liquefied (LNG) for vehicular fuel and industrial applications.
2. Biofertilizer (Digerido) Sales: Sale of digestate (digerido), a high-quality biofertilizer produced as a byproduct of the anaerobic digestion process. The digestate provides biological stabilized fertilizer for local farmers, helping them comply with increasingly strict EU regulations and reducing dependence on chemical fertilizers.
3. Carbon Credit Revenue: Plants avoid significant greenhouse gas emissions by capturing methane that would otherwise be released from organic waste decomposition, generating carbon credits that can be sold in compliance or voluntary markets.

Go-to-market motion1 record

Distribution channels3 records

Marketing channels5 records

Core offering

IAM Carbonzero designs, develops, finances, and operates biomethane (biometano) plants across rural Spain that convert agro-livestock organic waste into renewable biomethane (>95% methane purity) injected into the existing natural gas distribution network, while producing digestate-derived biofertilizers (digerido) for sale to local farmers. The company brings projects from site identification and feedstock contracting through permitting and the 'Ready to Build' phase, then operates the plants under long-term offtake arrangements, generating revenue from biomethane sales, biofertilizer sales, and carbon credits.

Product overview

IAM Carbonzero operates as a circular economy company developing and managing a portfolio of biomethane (biometano) plants across Spain. Its core product is the biometano plant — a biogas upgrading facility that uses anaerobic digestion to convert agro-livestock organic waste into renewable biomethane (CH4 >95% purity) injectable into the existing gas network, and simultaneously produces biofertilizers (digerido) as a high-value agricultural co-product. Projects are classified under SFDR Article 9 (sustainable investment objectives) and are developed in rural 'España vaciada' regions. The company is developing over 20 projects across Spanish provinces (Badajoz, Cáceres, Ávila, Soria, Almería, Lleida, Valladolid, Segovia, Madrid, Huesca, Pontevedra, A Coruña, Navarra), with a MAPFRE-backed investment fund covering 13 plants. No software-as-a-product or API product is offered — IAM Carbonzero is a physical infrastructure and project development operator, not a software/technology platform.

Differentiator

Problem solved

Functional benefit

Products and services

• Plantas de Biometano (Biomethane Plants) Biomethane plants developed and operated by IAM Carbonzero that use anaerobic digestion to convert agro-livestock organic waste into renewable biomethane (>95% methane purity) injected into the existing Spanish natural gas network. Each project is brought through site identification, permitting, contracting, and construction by IAM Carbonzero for landowners, biomass suppliers, and gas-offtake counterparties in rural Spain.
• Biofertilizantes / Digerido (Digestate Biofertilizer) Digestate (digerido) produced as a co-product of the anaerobic digestion process at IAM Carbonzero biomethane plants, processed and sold as a high-quality biological stabilized biofertilizer for local farmers and agricultural use, compliant with EU Regulation 2019/1009.

Quantifiable outcome

• 475,000 tCO2e/year avoided emissions
• +3 more outcomes

Segments4 records

Ideal customer profiles3 records

Technology focussed No

API detail

Has API

No

API docs

API detail

Core technology

AI maturity

App detail

Feature4 records

Partnerships

Two partnerships are on record, tiered minor.

• Gasnam-Neutral TransportminorGTM or Marketing PartnerIAM Carbonzero became a member of Gasnam-Neutral Transport, a professional association promoting renewable gases in transport. Membership provides networking opportunities and industry visibility within the biomethane and bioGNV sector.
• European Biogas Association (EBA)minorOthersEBA Statistical Report 2025 cited as source for European biomethane market data including plant counts by country (France 600+, Germany 200+, Italy 133+, Netherlands 55+).

Scale indicators5 records

Recent moves6 records

Expansion highlights6 records

Direct peers

• Hameln Biogas: German biomethane project developer focused on agricultural-waste-fed anaerobic digestion plants with gas grid injection. Mirrors IAM Carbonzero's AD + grid injection model in a different European market.
• Bright Biomethane (Bright Renewables): Dutch supplier of biogas upgrading systems and developer of biomethane projects. Comparable as a competitor in biomethane upgrading and grid injection, though sometimes overlapping as a potential technology supplier.
• EnviTec Biogas: German developer and operator of biogas and biomethane plants across Europe. Directly comparable in terms of AD-based biomethane plant development, EPC capabilities, and agricultural feedstock sourcing model.
• PlanET Biogas: German/Canadian biogas plant engineering and operating company. Comparable as a turnkey anaerobic digestion plant provider and operator in the same European biomethane value chain.
• Waga Energy: French company producing biomethane from landfill gas via anaerobic digestion and injecting it into gas networks. Highly comparable to IAM Carbonzero as a European biomethane project developer operating anaerobic digestion facilities.
• Vanguard Renewables: US-based anaerobic digestion and renewable natural gas developer turning organic waste into RNG. Comparable in business model (AD-to-RNG project development with multi-stream revenues) but operates in a different regulatory environment.
• BTS Biogas: Italian-headquartered biogas/biomethane plant developer with Iberian operations, building AD plants that upgrade biogas to biomethane. Closely comparable to IAM Carbonzero in geography (Southern Europe/Iberia), technology (AD + upgrading), and customer base (agricultural waste suppliers).
• Weltec Biopower: German manufacturer and operator of biogas and biomethane plants using agricultural substrates. Directly comparable technology stack and customer base of agricultural waste producers.

Broad incumbents

• Enagás: Spanish gas transmission system operator (TSO) and LNG terminal operator. Comparable as the incumbent operator of the network infrastructure IAM Carbonzero depends on for biomethane injection, and as a systemic participant in Spain's renewable gas transition.
• Naturgy: Major Spanish gas utility and energy incumbent. Broadly comparable as a participant in the Spanish gas value chain into which IAM Carbonzero injects biomethane, and a potential offtake counterparty or acquirer rather than a direct competitor at project level.

Market position

Strengths5 records

Weaknesses5 records

Competitive moat4 records

Key risks6 records

Key highlights7 records

Customer concentration

• LinkedInlinkedin.com/company/iamcarbonzero

Compliance5 records

Revenue estimate

Valuation estimate

Number of profiles

Profiles10 records

Funding overview

Funding rounds

Investors

Funding detail is available on the Subscription and Enterprise plan.Contact sales →

M&A

Investments

M&A and investment is available on the Subscription and Enterprise plan.Contact sales →

Frequently asked questions about IAM Carbonzero