What Green Mountain Technologies does

Green Mountain Technologies (GMT) is a Bainbridge Island, Washington-based, family-owned designer and manufacturer of commercial-scale composting systems founded in 1992. The company sells automated in-vessel composting systems (Earth Flow, CompTainer, CompoBox Tunnel), facility-design systems (Aerated Static Pile, Turned Aerated Pile, Mechanical Biological Treatment), and supporting equipment (WebMacs aeration controls, temperature and oxygen probes, below-grade aeration components, compost turners, and geomembrane/fleece covers). Its technology stack combines automated mechanical processing — mixing, grinding, and aeration inside enclosed vessels with biofiltered odor control — with the WebMacs computer-controlled aeration platform and below-grade spargers that enable reversing aeration at large municipal and commercial sites. The company states it has designed and built advanced composting systems for over 400 customer facilities with combined installed capacity exceeding 2.5 million tons per year and over 1.1 million tons per year of CO2 diverted from landfills.

GMT serves municipalities and government agencies, educational institutions, waste management companies, farms and agricultural operators, resorts and hospitality groups, equestrian operations, community nonprofits, and anaerobic digester facilities across North America, Europe, the Middle East, Asia, Australia, and the Caribbean. Notable customers include the City of Phoenix (60,000 T/year expandable to 120,000 T/year), Recology Ostrom Organics (50,000 T/year, expandable to 500,000+ T/year), Rutgers University EcoComplex, Brady Trucking, Salinas Valley Waste Authority, Kids Food Basket, and Grupo Puntacana. The business model combines custom-engineered equipment sales with multi-year facility design, permitting, and compliance consulting, plus ongoing operational support. Distribution is via direct enterprise field sales supplemented by an equipment financing partnership that offers $0-down, 3- to 7-year payment terms to qualified US and Canadian buyers, and an industry-event-led marketing presence at US Composting Council, SWANA, and related conferences.

Name

Green Mountain Technologies

Legal name

Green Mountain Technologies

Website

https://compostingtechnology.com

Company type

Private

Founded year

1992

Operating status

Operating

Headcount range

11–50 employees

Short description

Green Mountain Technologies designs and manufactures commercial composting systems, including the Earth Flow in-vessel platform, aerated static pile facilities, and WebMacs aeration controls, serving municipalities, universities, waste haulers, farms, and resorts across North America and internationally.

Ownership category

akta.pro rank

Product category

Commercial Composting Equipment

NAICS

Agriculture, Construction, and Mining Machinery Manufacturing (3331)

SIC

Construction, Mining & Materials Handling Machinery & Equip (3530)

akta.pro primary industry

Composting Facility Operations (Windrow, ASP, In-Vessel) (BPALAEAB)

akta.pro secondary industries

Composting (Windrow, Aerated Static Pile, In-Vessel) (EUAIAEAC), Organics Collection & Processing (Composting/Anaerobic Digestion) (IMAIAFAF), Yard Waste, Land Clearing & Green Waste Processing (Mulch/Compost Feedstock) (BPALAEAG), Organics & Composting Programs (Food Waste, Green Waste) (BPABALAC)

Keywords

• Commercial composting systems
• In-vessel composting equipment
• Composting facility design
• Aerated static pile systems
• Organic waste processing equipment

Headquarters

HQ city

Bainbridge Island

HQ country

United States

HQ region

North America

Offices1 record

Markets served

GTM type

B2B

Offering type

Hardware or Manufacturing

Cost components

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

Revenue model

1. Composting Equipment Sales: Sale of in-vessel composting systems (Earth Flow), aeration equipment, compost turners, temperature/oxygen probes, and aeration components. Systems range from small Earth Flow units to large-scale facility equipment.
2. Equipment Financing: Partnership with multiple equipment finance banks to offer financing options for Earth Flow systems with $0 cash down and monthly payments over 3 to 7 years for qualified US and Canadian organizations.
3. Facility Design & Consulting Services: Comprehensive consulting services including facility design, permitting and compliance, feedstock analysis, pilot projects, and ongoing operational support for composting facilities.
4. System Integration & Installation: Design, permit, and build large composting facilities with ongoing operating support and technical assistance.

Pricing tiers

Go-to-market motion3 records

Distribution channels3 records

Marketing channels7 records

Core offering

Green Mountain Technologies (GMT) designs, manufactures, and installs commercial-scale composting systems, with the proprietary Earth Flow in-vessel composting system as its flagship product. The company also provides aerated static pile (ASP), turned aerated pile (TAP), mechanical biological treatment (MBT), and CompoBox tunnel composting systems, supported by WebMacs computer-controlled aeration, probes, turners, and covers. GMT complements its equipment with facility design consulting, permitting support, feedstock analysis, pilot projects, and ongoing operational assistance.

Product overview

Green Mountain Technologies offers a comprehensive portfolio of commercial composting solutions consisting of two main product categories: In-Vessel Systems (Earth Flow™, CompTainer™, CompoBox Tunnel) and Facility Design Systems (ASP, rASP, TAP, MBT). The Earth Flow™ is the flagship automated in-vessel composting system, available as intermodal (containerized) or site-built variants. Supporting the core systems are add-on equipment modules including WebMacs aeration controls, temperature/oxygen probes, aeration components, compost turners (side discharge and tow-behind), and compost covers (geomembrane and fleece). The company also provides facility design consulting services and financing options. The portfolio is unified by shared control systems (WebMacs) and a common technology platform centered on aerated composting with biofiltration for odor control.

Differentiator

Problem solved

Functional benefit

Products and services

• Earth Flow In-Vessel Composting System Automated in-vessel composting system that automatically mixes, grinds, and aerates compostable materials in an enclosed vessel; available in containerized (Earth Flow Intermodal, 10-40 ft) and site-built configurations for municipalities, universities, resorts, farms, and commercial operations.
• CompTainer Containerized Composting System Containerized airtight composting vessel loaded by conveyor from inside a processing building, designed for controlled batch composting operations.
• CompoBox Tunnel Composting System In-vessel tunnel composting system engineered for larger-scale commercial composting operations.
• Aerated Static Pile (ASP & rASP) Composting Facility Design Designed facility system using below-grade spargers with reversing aeration and biofiltration to control process and odors; suitable for very large facilities (e.g., 50,000 tons/year and beyond).
• Turned Aerated Pile (TAP) Composting Facility Design Facility design combining aerated static pile technology with mechanical turning to accelerate composting while controlling odor; deployed for large municipal operations such as the City of Phoenix's 60,000 T/year facility.
• Mechanical Biological Treatment (MBT) System Combined mechanical and biological treatment system designed to process mixed waste streams with both mechanical separation and biological composting stages.
• Facility Design & Consulting Services End-to-end consulting engagements including facility layout, permitting and compliance, feedstock analysis, pilot projects, and ongoing operational support for commercial and municipal composting facilities.
• Earth Flow Equipment Financing Financing arrangement offering $0 cash down and monthly payments over 3 to 7 years for qualified US and Canadian organizations (including NGOs, educational institutions, municipalities, and private businesses) purchasing Earth Flow systems.

Quantifiable outcome

• Reduced composting time from 4-6 months to 14-21 days with Earth Flow systems
• +5 more outcomes

Named customers14 records

Segments6 records

Ideal customer profiles4 records

Technology focussed Yes

API detail

Has API

No

API docs

API detail

Core technology

AI maturity

App detail

Feature5 records

Partnerships

Six partnerships are on record, tiered flagship, supporting and minor.

• 1% for the PlanetflagshipStrategic or Co-development Partner · 1 April 2026GMT joined 1% for the Planet in April 2026, committing to donate 1% of annual sales to support environmental and community organizations. GMT already donated 10% of profits to community composting organizations.
• New Jersey Composting CouncilsupportingStrategic or Co-development PartnerCollaboration on Rutgers EcoComplex pre-composting program, outreach, and compost-related research to support food waste and organics recycling program success.
• New Jersey Department of Environmental ProtectionsupportingStrategic or Co-development PartnerFunding provider for Rutgers EcoComplex on-campus organics diversion recycling research and demonstration project.
• Northland CollegeminorStrategic or Co-development PartnerSource of refurbished Earth Flow system that was repurposed for use at Kids Food Basket, demonstrating circular economy approach to equipment.
• Stettler SupplysupportingChannel Partner/ Reseller/ DistributorLocal irrigation system contractor in Salem Oregon that partnered with GMT and Annen Farms for TAP composting system installations in Oregon hop farming region.
• SWANA (Solid Waste Association of North America)supportingGTM or Marketing PartnerGMT sponsors, exhibits, and presents at SWANA Symposium, with Jeff Gage presenting on organics trends and facility management panel.

Scale indicators6 records

Recent moves6 records

Expansion highlights6 records

Others

• N2 Applied: Provider of plasma-based nitrogen fixation technology for converting organic waste to fertilizer. Not a direct competitor, but a thematically adjacent player in the organics-to-valuable-product space, with overlapping municipal and agricultural customers evaluating organics infrastructure investments.

Direct peers

• Compost Systems: Austria-based designer and manufacturer of in-vessel and tunnel composting systems. Direct competitor in the same in-vessel/Asp category, serving municipalities and commercial organics processors with comparable engineered systems and consulting services.
• SCARAB International: Manufacturer of pull-type and self-propelled compost windrow turners used in mid-to-large scale composting operations. Competes head-to-head with GMT's side discharge and tow-behind turner product lines for ASP and windrow customers.

Broad incumbents

• Bulk Handling Systems (BHS): Designer and manufacturer of sorting and processing systems for recyclables and organics, including equipment used in pre-processing for composting facilities. Competes with GMT in the broader organics processing equipment market and at integrated MRF/composting project sites.
• Vermeer Corporation: US-based industrial equipment manufacturer with a meaningful compost turner and horizontal grinder product line. Competes with GMT's turner and ASP equipment offerings and has substantially larger distribution and service infrastructure.
• Komptech: European incumbent providing a broad portfolio of composting and waste processing equipment including turners, shredders, and tunnel systems. Overlaps with GMT in ASP and in-vessel technology but operates at much larger scale across global markets.
• Eggersmann Group (BACKHUS / FUELMATIC): German group with composting and recycling divisions, including BACKHUS windrow turners and in-vessel systems. Directly comparable in product mix to GMT's ASP and in-vessel portfolio, serving large municipal and commercial customers across Europe and beyond.

Emerging players

• Midwest Bio-Systems: Provider of composting technology, microbial products, and consulting for commercial composting operations. Adjacent competitor to GMT in facility design and process consulting, with overlap in serving smaller commercial and agricultural composting customers.
• Forest Concepts: Designer of feedstock size-reduction and preprocessing equipment used in composting and biomass operations. Adjacent to GMT's systems in the upstream material handling portion of a composting facility.
• EcoRich: Asian-based provider of in-vessel composting and organics processing systems. Comparable niche competitor to GMT in the in-vessel space, particularly relevant for GMT's Asia-Pacific expansion ambitions.

Market position

Strengths5 records

Weaknesses5 records

Competitive moat5 records

Key risks6 records

Key highlights6 records

Customer concentration

• Xx.com/greenmttech
• YouTubeyoutube.com/user/GreenMtnTech
• Facebookfacebook.com/GreenMountainTech
• LinkedInlinkedin.com/company/green-mountain-technologies
• Instagraminstagram.com/greenmountaintech

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 Green Mountain Technologies