Snow Leopard Projects GmbH

What Snow Leopard Projects GmbH does

Snow Leopard Projects GmbH is a privately held German engineering and consulting firm, founded in 1995 and headquartered in Reisbach, Bavaria, that designs and installs retrofit technology for existing biogas plants. Its core offering, the SLP Batch Hydrolysis system, is a pretreatment unit placed upstream of an existing biogas digester that breaks down cheap, fibrous feedstocks (straw, grass, manure, horse manure) into liquid fatty acids before they enter the main fermenter. The system operates at hyper-thermophilic temperatures above 55°C, paired with a proprietary heavy-duty mixer that handles up to 20% total solids, enabling claimed gains of 35% in biogas yield versus single-stage plants and 30-50% reductions in feedstock costs. Supporting offerings include biological consulting services and the recently launched SLP Carbonizer Box for on-site biochar (terra preta) production.

The business is operated by founder Walter Danner and his daughter Katharina as a lean core team (8 employees total) supplemented by a network of partners, suppliers, and freelancers. Revenue comes from project-based hardware sales (hydrolysis retrofits, Carbonizer Boxes) and professional services (biological consulting), with no disclosed pricing or contract structure beyond free initial consultations and BAFA funding eligibility. Customers are primarily German biogas plant operators whose 20-year EEG subsidy period has expired and who need to reduce production costs below 12 ct€/kWh and comply with the Düngeverordnung; the firm also serves international projects, with reference installations in Croatia. Marketing is conducted directly through a bilingual website, technical blog content, and founder-led phone outreach, with named customer testimonials (Velimir Varljen, Christoph Ratzinger, Dominik Hauer, Hans Ortner) used as primary proof points. The company has no external institutional funding and operates as a tightly held GmbH.

Name

Snow Leopard Projects GmbH

Legal name

Snow Leopard Projects GmbH

Website

https://snow-leopard-projects.com

Company type

Private

Founded year

1995

Operating status

Operating

Headcount range

1–10 employees

Short description

Snow Leopard Projects GmbH is a German engineering firm founded in 1995 that designs and installs hydrolysis retrofits, high-load digesters, and biochar systems to optimize existing biogas plants processing fibrous feedstocks, primarily serving German operators facing post-EEG subsidy expiry.

Ownership category

akta.pro rank

Product category

Biogas Plant Engineering

SIC

Cogeneration Services & Small Power Producers (4991)

akta.pro primary industry

Biogas/RNG Plant Development, EPC & Project Delivery (EUAAAEAH)

akta.pro secondary industries

Biogas/RNG Plant Operations, Maintenance & Asset Management (EUAAAEAI), Anaerobic Digestion (AD) & Biogas/RNG Production (Organics Feedstocks) (BPALAEAC)

Keywords

• Biogas plant optimization
• Hydrolysis retrofit systems
• Biomass energy consulting
• Biochar production equipment
• Agricultural residue processing

Headquarters

HQ city

Reisbach

HQ country

Germany

HQ region

Europe

Offices2 records

Markets served

GTM type

B2B

Offering type

Hardware or Manufacturing

Cost components

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

Revenue model

1. Hydrolysis Retrofit Installation: Design, consulting, and installation of SLP Batch Hydrolysis systems as retrofits to existing biogas plants. Enables operators to use cheaper fibrous feedstock and increase plant capacity.
2. Biological Consulting: Biological optimization consulting for biogas plants. Focuses on optimizing temperature, trace elements, and flowability to achieve maximum performance at lowest operating costs. Addresses biological problems with biology rather than mechanical solutions.
3. Biochar (Terra Preta) Solutions: Production and sales of biochar (plant coal/terra preta) using the SLP Carbonizer Box. Can process digestate, horse manure, wood waste into biochar for soil enhancement.

Pricing tiers

Go-to-market motion2 records

Distribution channels2 records

Marketing channels4 records

Core offering

Snow Leopard Projects GmbH designs, engineers, and installs the proprietary SLP Batch Hydrolysis retrofit system for existing biogas plants, enabling operators to use cheap fibrous feedstocks (straw, grass, manure) instead of expensive maize silage. The company also provides biological consulting services to optimize biogas plant biology and sells the SLP Carbonizer Box for on-site biochar production from biomass residues.

Product overview

Snow Leopard Projects GmbH is a German biogas/biomass consulting and engineering company offering a suite of products and services for biogas plant optimization. The core offering includes the SLP Batch Hydrolyse retrofit system and SLP Small-High Load Digesters operating at hyper-thermophilic temperatures, which together form a two-stage biogas process enabling 35% higher biogas yields compared to single-stage plants. Supporting services include biological consulting and the proprietary Heavy-Duty Mixer for high-solids substrates. The company has recently launched the SLP Carbonizer Box for on-site biochar production, extending their circular economy approach. The product portfolio is unified around optimizing biogas plants to process cheap fibrous feedstocks (straw, grass, manure) while reducing operating costs and regulatory compliance burdens.

Differentiator

Problem solved

Functional benefit

Brands

• SLP Batch Hydrolyse: Batch hydrolysis retrofit system installed before existing biogas plants to enable use of cheap, fibrous feedstocks like straw, grass, and straw manure. Increases biogas output without modifying existing fermenter capacity.
• SLP Carbonizer Box
• SLP Small-High Load Digesters

Products and services

• SLP Batch Hydrolyse (Hydrolysis Retrofit) A hydrolysis retrofit system installed upstream of existing biogas plants, enabling the use of cheap fibrous feedstocks such as grass, straw, and straw manure while eliminating floating crust problems and improving biogas yield. Built before the main biogas plant so existing operations are not affected during installation. BAFA funding eligible.
• Biologische Beratung (Biological Consulting) Expert consulting services to improve biogas plant biology by optimizing the environment for bacteria and enzymes through the ideal combination of temperature, trace elements, and flowability, achieving maximum performance at lowest operating costs. The company solves biological problems with biology rather than mechanical solutions.
• Terra Preta / Pflanzenkohle (Biochar) Biochar (plant charcoal) production service using the SLP Carbonizer Box, producing a charcoal with huge inner surface area that can retain nutrients, pollutants, and water. Produced from digestate, horse manure, and wood waste.
• SLP Carbonizer Box Semi-industrial batch-operated biochar production unit that allows biogas plant operators to produce their own plant charcoal from digestate, horse manure, and wood waste at 2-5% of the investment cost of industrial pyrolysis plants. User lights the fire and lets the process run independently, then removes the finished biochar box.
• SLP Small-High Load Digesters Small high-load digesters operating at hyper-thermophilic temperatures (above 55°C) designed as front-end treatment for existing biogas plants, enabling 20-30% reduction in feedstock consumption and 30-50% lower feedstock costs. Features rapid temperature reach and precise control of temperature, pH, mixing, and volatile solid loading rate.

Quantifiable outcome

• 35% higher biogas yield compared to single-stage biogas plants
• +4 more outcomes

Named customers4 records

Segments2 records

Ideal customer profiles2 records

Technology focussed No

API detail

Has API

No

API docs

API detail

Core technology

AI maturity

App detail

Feature5 records

Scale indicators5 records

Recent moves4 records

Expansion highlights4 records

Broad incumbents

• Hitachi Zosen Inova (Schmack Biogas): Large international EPC firm operating the legacy Schmack Biogas business. Overlaps with SLP on German agricultural biogas plant design and biological optimization, but as part of a much broader waste-to-energy portfolio.
• 2G Energy AG: German manufacturer of combined heat and power (CHP) gas engines, a downstream complement to biogas plants. Comparable in addressing the post-EEG economics question for plant operators, though focused on the engine rather than the digester.

Direct peers

• PlanET Biogas Group: German/Canadian biogas plant EPC firm with a focus on agricultural and organic-waste feedstocks. Overlaps with SLP on biological consulting and feedstock-flexibility offerings for farm-scale operators.
• Börger GmbH: German manufacturer of rotary lobe pumps and macerating technology for biogas plants. Comparable on the equipment side for high-solids/fibrous substrate handling within AD plants.
• EnviTec Biogas AG: German biogas plant manufacturer, operator, and service provider. Competes head-to-head for the same German agricultural biogas customer, including ongoing biological optimization and post-commissioning service contracts.
• Agraferm Technologies AG: German EPC contractor for agricultural and industrial biogas plants. Directly comparable in plant design, biology-driven optimization, and the German post-EEG retrofit segment.
• Xergi (Nature Energy): Danish anaerobic digestion technology provider and plant operator, now part of Nature Energy. Comparable AD process engineering, biological optimization expertise, and European agricultural customer base.
• Weltec Biopower: German manufacturer and EPC contractor for biogas plants serving agricultural operators. Directly comparable customer base (German biogas plant owners) and overlapping product scope (plant design, biological optimization, retrofit services).
• Vogelsang GmbH & Co. KG: German manufacturer of pumps, mixers, and choppers specifically designed for high-solids and fibrous substrates in biogas digesters. Closely comparable to SLP's heavy-duty mixer technology and the floating-layer problem it addresses.

Emerging players

• MT-Energie (methanis): German biogas plant builder and service provider focused on agricultural feedstocks. Smaller-scale direct peer in the German retrofit and biological optimization segment, with comparable customer type but lower international footprint.

Market position

Strengths4 records

Weaknesses4 records

Competitive moat4 records

Key risks6 records

Key highlights6 records

Customer concentration

• LinkedInlinkedin.com/company/snow-leopard-projects-gmbh

Revenue estimate

Valuation estimate

Number of profiles

Profiles2 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 Snow Leopard Projects GmbH