Aries Clean Energy

What Aries Clean Energy does

Aries Clean Energy (legally Aries Clean Technologies LLC) is a private U.S. clean infrastructure company founded in 2010 that deploys a proprietary fluidized bed gasification platform to convert municipal biosolids into renewable syngas and a beneficial Bio-Fly-Ash™ (biochar) byproduct. The company was originally launched as PHG Energy by owners of a multi-state Caterpillar dealership, expanded into biosolids via the 2015 acquisition of MaxWest Environmental's assets and patents, and rebranded as Aries Clean Technologies in 2017. It operates from a headquarters in The Woodlands, TX with a staff of 11–50 employees, and runs the Linden, NJ commercial-scale gasification facility — currently the largest biosolids gasification plant of its kind in the world, processing ~430 wet tons per day of biosolids from the Linden Roselle Sewerage Authority (LRSA) and producing 22 tons per day of PFAS-free biochar.

The core technology, protected by 20 patents, operates at approximately 1,250°F in a bubbling fluidized bed and 1,800°F in a downstream thermal oxidizer, with hydrated-lime emissions control enabling hydrodefluorination. It is independently validated to destroy >97% of PFAS compounds at commercial scale — a nationwide first confirmed by Barr Engineering and Epsilon Associates in April 2025 — while reducing biosolids volume by up to 95% in a closed-loop system that requires no fossil fuel during operation. Aries monetizes the technology through its DBOOM model (Design, Build, Own, Operate, Maintain), entering 30-year municipal service agreements under which cities and sewerage authorities pay tipping fees for biosolids processing while Aries retains ownership, operation, and Bio-Fly-Ash™ byproduct economics.

The business is in an early execution phase: a single facility generates the bulk of operating revenue, Sanford, ME is in active permitting with groundbreaking targeted for early 2026, and lead investor Spring Lane Capital has doubled its commitment to fund a stated four-plants-in-four-years expansion plan. In April 2026, Kari Mueller replaced Jon Cozens as CEO, and the lead investor consolidated the bond capital structure by purchasing the outstanding Series 2019 and 2021 bonds to backstop Linden redevelopment. Customer mix is currently near-pure municipal/government with no disclosed industrial or commercial haulers under contract at scale, and revenue figures are not publicly disclosed.

Name

Aries Clean Energy

Legal name

Aries Clean Technologies LLC

Website

https://ariescleantech.com

Company type

Private

Founded year

2010

Operating status

Operating

Headcount range

11–50 employees

Short description

Aries Clean Energy deploys patented fluidized bed gasification to convert municipal biosolids into renewable syngas and Bio-Fly-Ash™ biochar under long-term DBOOM contracts with wastewater utilities, with independently validated commercial-scale PFAS destruction.

Ownership category

akta.pro rank

Product category

Biosolids Management and Gasification Services

NAICS

Sewage Treatment Facilities (221320), Biomass Electric Power Generation (221117)

SIC

Cogeneration Services & Small Power Producers (4991)

akta.pro primary industry

Thermal Conversion & Advanced Treatment (Pyrolysis, Gasification, Hydrothermal Carbonization) (EUANAHAH)

akta.pro secondary industries

Gasification & Pyrolysis-to-Power (Waste/Biomass Advanced Thermal) (EUACAIAL), Waste Gasification (MSW/RDF/biomass-to-syngas) (EUAAAKAE), Organics-to-Energy & CHP from Biogas (On-site Power/Heat) (EUAIAEAG)

Keywords

• Biosolids gasification services
• Municipal wastewater treatment
• PFAS destruction technology
• Renewable syngas production
• Biochar byproduct manufacturing

Headquarters

HQ city

Nashville

HQ country

United States

HQ region

North America

Offices3 records

Markets served

GTM type

B2B

Offering type

Services

Cost components

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

Revenue model

1. Biosolids Gasification Processing Services: Aries designs, builds, owns, operates, and maintains (DBOOM) biosolids gasification facilities. Revenue is generated through long-term municipal service agreements for biosolids processing. Municipalities pay tipping fees and disposal costs for biosolids processing, with costs competitive against traditional disposal (landfill, incineration, land application). The model includes reduced tipping fees and transportation costs, with cost-competitive and predictable pricing for municipalities over 30-year tenures.
2. Renewable Energy Production: The gasification process converts biosolids into syngas (synthetic fuel gas), which is combusted to produce heat and/or electricity. This energy is used internally to power plant operations (closed-loop), with potential for excess energy to be sold or offset against operating costs. Energy production creates monetary value from sustainable/renewable power generation.
3. Bio-Fly-Ash™ Byproduct Sales: Sale of Bio-Fly-Ash™ (biochar), the beneficial byproduct produced from the gasification process. The PFAS-free biochar can be used as a substitute for coal fly ash in concrete and other industrial/manufactured products, creating an additional revenue stream from what would otherwise be waste.

Pricing tiers

Go-to-market motion1 record

Distribution channels1 record

Marketing channels8 records

Core offering

Aries Clean Energy designs, builds, owns, operates, and maintains biosolids gasification facilities under a 30-year DBOOM service model for municipalities and wastewater utilities. Its proprietary fluidized bed gasification technology converts municipal biosolids into renewable syngas energy, destroys PFAS compounds at 97%+ efficacy at commercial scale, and produces Bio-Fly-Ash™ (biochar) as a beneficial byproduct used as a substitute for coal fly ash in concrete and other industrial applications.

Product overview

Aries Clean Technologies offers a unified portfolio of biosolids management solutions centered on its proprietary Fluidized Bed Gasification Technology. The core product is a patented gasification system that converts municipal biosolids into renewable syngas energy while destroying PFAS compounds and producing Bio-Fly-Ash™ (biochar) as a beneficial byproduct. The company operates under a DBOOM (Design, Build, Own, Operate, Maintain) service model, providing municipalities with end-to-end facility development and operation. Current operational facilities include the Linden, New Jersey plant, with the Sanford, Maine project in active development. The company serves municipalities, communities, and commercial waste haulers with a focus on PFAS destruction and sustainable biosolids management.

Differentiator

Problem solved

Functional benefit

Products and services

• Fluidized Bed Gasification Technology Proprietary patented gasification system that converts municipal biosolids into renewable syngas energy and valuable byproducts. Operates at approximately 1,250°F in an oxygen-starved fluidized bed environment to destroy PFAS compounds and reduce biosolids volume by up to 95%. Offered to municipalities and wastewater utilities under the DBOOM service model.
• Bio-Fly-Ash™ (Biochar) A beneficial byproduct produced during fluidized bed gasification of biosolids — a fine PFAS-free powder ranging between 2–300 microns used as a substitute for coal fly ash in concrete and other industrial/manufactured products. Produced at 22 tons per day at the Linden facility and sold to industrial buyers.
• DBOOM Service Model (Design, Build, Own, Operate, Maintain) Comprehensive partnership service in which Aries designs, builds, owns, operates, and maintains biosolids gasification facilities for municipalities. Provides 30-year, predictable disposal solutions without municipalities bearing capital or operating costs. Sold to municipal governments and wastewater authorities as long-term service contracts.
• Linden, New Jersey Biosolids Gasification Facility

Quantifiable outcome

• Up to 95% reduction in biosolids volume
• +6 more outcomes

Named customers3 records

Segments4 records

Ideal customer profiles3 records

Technology focussed Yes

API detail

Has API

No

API docs

API detail

Core technology

AI maturity

App detail

Feature5 records

Scale indicators10 records

Recent moves6 records

Expansion highlights4 records

Broad incumbents

• Clean Harbors: Clean Harbors is a major North American provider of environmental and industrial waste services, including treatment and disposal of hazardous and regulated waste streams. It is a broad incumbent peer addressing overlapping municipal/industrial waste management RFPs.
• Veolia: Veolia is a global water, waste, and energy services company with biosolids management and waste-to-energy operations. It is a broad incumbent peer because municipalities increasingly compare Aries' specialized biosolids gasification against Veolia's full-service water/waste offerings.
• Suez Water Technologies & Solutions: Suez provides municipal and industrial water and wastewater treatment, including biosolids handling. It is a broad incumbent peer whose existing municipal relationships could either partner with or compete against Aries' DBOOM gasification deployments.
• Stericycle: Stericycle provides regulated waste disposal and recycling services to healthcare, commercial, and municipal customers. It is a broad incumbent peer in regulated waste services that municipalities may benchmark against Aries when evaluating biosolids disposal contracts.

Direct peers

• Fulcrum BioEnergy: Fulcrum converts municipal solid waste into renewable synthetic fuels via gasification plus Fischer-Tropsch. It is a direct peer because both companies pursue waste-to-energy gasification infrastructure projects, and Fulcrum was a prior employer of Aries' outgoing CEO Jon Cozens.
• InEnTec (formerly EnerTech Environmental): InEnTec operates plasma-arc gasification systems that convert hazardous and organic waste streams, including biosolids, into syngas. It is a direct peer as an alternative thermal-conversion pathway for municipal biosolids with similar DBOOM-style infrastructure economics.
• Anaergia: Anaergia provides anaerobic digestion, biosolids management, and resource recovery facilities for municipal and industrial waste streams. It is a direct peer to Aries because both monetize biosolids/waste organics into energy under long-term service contracts with municipalities.
• Sierra Energy: Sierra Energy's FastOx gasifier converts waste (including biosolids and medical waste) into syngas for power and hydrogen. It is a direct peer because it competes head-to-head with Aries' fluidized bed gasification in the waste-to-energy-from-biosolids niche.

Emerging players

• Cambrian Innovation: Cambrian builds wastewater-to-energy and resource-recovery systems (e.g., EcoVolt) for industrial and municipal customers. It is an emerging peer because it targets the same wastewater/biosolids customer base with a different (biological/electrochemical) conversion approach.
• LanzaTech: LanzaTech uses gas-fermentation technology to convert syngas (and waste gases) into fuels and chemicals. It is an emerging peer because both Aries and LanzaTech monetize syngas produced from waste feedstocks, though Aries combusts syngas for energy while LanzaTech ferments it.

Market position

Strengths5 records

Weaknesses5 records

Competitive moat5 records

Key risks6 records

Key highlights7 records

Customer concentration

• Xx.com/ariescleanenrgy

Revenue estimate

Valuation estimate

Number of profiles

Profiles13 records

Funding overview

Funding rounds2 records

Investors1 record

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

M&A1 record

Investments

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

Frequently asked questions about Aries Clean Energy