Harp CX SERIES

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Harp CX Series

Advanced, Fully Circular Food Waste Solution For All Industries

The Harp CX Series is a range of aerobic biodigesters that quickly convert food and organic waste into a safe, dry, nutrient-rich biofertilizer — all within 24 hours.

Designed for efficiency, our on-site biodigesters use proprietary biotechnology to reduce waste volume by up to 80% with minimal manual intervention, helping your business lower emissions, cut disposal costs, and support a circular economy.

With eight models to choose from and expert support at every stage, Harp delivers tailored, high-performance solutions for businesses of all sizes.

Cleaner, Faster, Smarter — Unlike Any Other Digester

The Harp CX Series redefines waste management with advanced waterless technology, setting a new standard for efficiency and sustainability. Unlike traditional digesters, it retains valuable nutrients and prevents harmful emissions. With no need for water connections, costly pre-treatment, or complex infrastructure, Harp CX Series delivers a smarter, cleaner, and more cost-effective solution for businesses ready to upgrade their waste management strategy.

Quick Processing Time

Organic breakdown is achieved in just 24 hours

Mitigate Food Waste Directed To Landfill

Food waste is reduced by 85%

Reduce Waste Management Costs

By recycling waste on-site

Real-Time Performance Monitoring

Smart automation, easy control

Compact Footprint For Optimal Space

Fit within diverse environments

Lowest Carbon Footprint

The lowest GHG emissions of any other food waste process

Reduce On-site Odours & Rodents

Enhanced working conditions

Tailored for Every Business

8 different models to fit all business sizes

Advanced Biotechnology

Waterless system that preserve nutrients and reduce impact

Offset Company’s Carbon Footprint

Automatic waste reporting

Improve CSR

Enhance your CSR with cleaner, greener waste management.

Closing The Loop

Create a circular economy by returning nutrients to where they belong

From Waste To Resource

Harp Biodigesters are designed for steady, staged feeding, allowing food waste to be processed efficiently and safely. Inside the system, proprietary microbes and mechanical processes work together to break down all organic materials into nutrient-rich biofertilizer.

This advanced combination reduces food waste volume and weight by up to 85% in less than 24 hours, all while maintaining optimal conditions for rapid, clean decomposition.

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Food Waste Input

The process begins with a steady intake of food and other organic waste. Loading can be done manually or supported by Harp auxiliary accessories for minimal staff intervention

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Optimal Mixing & Aeration

Our precision-controlled rotating system, combined with advanced biotechnology, provides perfect aeration, heat and oxygen flow, creating the ideal conditions for rapid decomposition.

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24-Hour Transformation

After a 24-hour period, the digestion process is complete. The result? More carbon captured, more nutrients preserved, and a premium end-product ready to give back to the earth.

Choose Your Perfect Fit

From 1,000 L/week to 50,000 L/week, our on-site biodigester comes in 8 different models, delivering clean, carbon‑negative food waste processing with rapid turnaround and compact footprints—ideal for every scale of business.

Optional Upgrades for Peak Performance

Enhance your waste management with Harp Biodigester upgrades that boost efficiency, automation, safety, and integration. From small businesses to industrial operations, our flexible options let you tailor performance to your exact needs.

Smarter Monitoring & Control

Easier Waste Handling & Loading

Automation & Performance Boosts

Housing Solutions

Introducing Harp CX App

The Harp CX App enhances the biodigester by allowing real-time monitoring of performance and automatic carbon credit calculations. It provides businesses with an efficient way to manage waste, track environmental impact, and achieve sustainability goals.

Carbon Credit Offsetting

Simplified monitoring and management of carbon credits for easier reporting

Breakdown Prevention

Alerts and diagnostics monitoring for continuous and efficient operation

Data Tracking

Live tracking of weight, time, temperature, alerts, and performance insights

Innovative Technology

First-of-its-kind app in the market, it offers advanced waste management

Key Environmental and Economic Benefits 

Waterless Process

Harp’s Bio-Technology uses smart sensors to recirculate and control moisture from the water already present in organic waste, eliminating the need for a freshwater line and wastewater discharge. This method saves up to 540 litres of water daily compared to alternative technologies.

Cleaner Waste Streams

During biodigester commissioning, on-site operators are trained in Harp’s BAP and quality protocols. This training has been proven to improve waste segregation and minimize recycling errors. Hotels have reported savings of over €400 on cutlery alone while reducing their carbon emissions by 4.9 KgCO2e for each recovered cutlery set.

Environmental Social and Governance

A USCC & ILSR report emphasizes on-site composting over large-scale composting facilities. By adopting on-site waste processing, organizations can reduce cross-contamination and decrease reliance on diesel-powered transport vehicles. This leads to lower GHG emissions and greater operational efficiency, aligning with ESG goals.

Sustainability & Business Impact

The Harp CX Series delivers more than waste reduction — it transforms the way your business manages food waste:

  • Cut bin costs by up to 100% with less waste to store and collect

  • Reduce weight and volume by up to 85% for cleaner, easier handling

  • Lower fuel and transport bills with fewer collections required

  • Enjoy low energy consumption rates for cost-effective performance

  • One of the few technologies proven to achieve full pathogen kill, creating a safe, stable output

  • Produce a nutrient-rich, carbon-negative end product that supports soil regeneration

  • Free up valuable yard space with a pest-free, compact footprint

  • Manage operations remotely via smart telemetry for maximum convenience

  • Waterless and odourless processing with no wastewater discharge

  • Cut CO₂ emissions and elevate your sustainability credentials

With different models available for all business sizes — from cafés and schools to hotels, campuses, and industrial facilities — the Harp CX Series provides the right solution for every scale.

Ready to find the perfect model for your business? Our experts are here to help.

Connect with Our Experts to Learn More!

 

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See what our clients say

''Delighted''

“We haven’t sent any waste offsite since we installed the bio-digester in December, The bio-digester makes people think a bit more about what they are doing and keeps everyone focused on ‘green’ ways to process waste. The process has been embraced by our tenants and has got them thinking more about waste segregation. They now unpackage their sent produce.

As a result, not only are there no contaminated bins coming through, but we are creating added revenue by bailing our plastic. In preparation for a return to normal operations, we look forward to installing a second Harp – bio digester.

We are delighted with this initiative which directly feeds into our People Planet Sustainable Strategy”

– Michael Farrell, Estate Manager at Captial Dock Aramark Properties.

''Ideal Solution''

“Our customers are delighted that they now have a solution for food waste and are not contributing to unnecessary environmental damage caused by sending the organic matter to landfill. Harp Renewables has been hugely helpful and very responsive to any questions we have had, particularly in the early days while everyone was getting used to using the bio-digester.

There has also been a lot of interest in the bio-digester from other Local Authorities and the DCCAE.

It would be an ideal solution to any organisation with excess food waste and I would have no hesitation in recommending Harp Renewables to any interested party.”

 – Bernadine Carry, Environmental Awareness Officer at Meath County Council shares

''Great Educational Tool''

“We invested in a Harp CX5 Bio-Digester with a bespoke integrated biomass boiler as a solution to our waste costs. We are saving around £11,000 annually now.

With this solution we are also able to use the biomass boiler to heat out facilities which in turn dramatically reduces our heating’s C02 emissioons. All the excess digestate is then used as an organic fertilizer in our on-site greenhouses.

This is a great educational tool to teach all the students about sustainability so thatin the future, students are interested and determined to make this world a greener more environmentally friendly place to live.”

– Penair School

Harp Renewables