Chemical fertiliser costs are rising and regional farmers across Australia and SE Asia are increasingly exposed. AWE produces certified organic digestate — a nutrient-rich soil amendment made from local organic waste — that supplements chemical fertilisers, improves soil health, and reduces the cost of farming inputs for the regional industries that surround AWE's facilities.
Synthetic chemical fertilisers have been the backbone of modern agricultural production for decades. But the economics of chemical fertiliser supply have shifted significantly in recent years — and regional farmers in Australia and Southeast Asia are increasingly exposed to costs they have limited ability to control.
Chemical fertilisers are manufactured from fossil fuel feedstocks — primarily natural gas for nitrogen fertilisers — and are produced at large industrial facilities, typically overseas or in major industrial centres far from regional farms. Every application of chemical fertiliser on a regional farm in the Murray-Darling Basin or Goulburn Valley involves costs that begin at the factory gate, travel through international shipping, and are compounded by domestic freight before reaching the farm.
As global gas prices, freight costs, and agricultural input costs have risen, regional farmers have faced escalating fertiliser bills with limited alternatives. AWE's organic digestate offers a locally produced supplement that reduces that dependence — not as a complete replacement, but as a meaningful reduction in the chemical fertiliser inputs that regional farms require.
AWE's organic digestate is the third primary output of every anaerobic digestion facility — produced continuously alongside biomethane and biogenic CO₂. It is a nutrient-rich organic material derived from the same agricultural and food processing organic waste that regional industries generate, returned to the agricultural land that surrounds AWE's facilities.
The digestate AWE produces is not positioned as a complete replacement for all chemical fertiliser requirements. It is a certified organic soil amendment — a supplement that reduces the volume of synthetic fertiliser a regional farm needs to apply, lowers input costs, and improves the long-term health of agricultural soil.
As AWE's product development program advances, the digestate output has the potential to be formulated into a higher-performing specialised organic fertiliser product — but for now, the commercial proposition is clear and immediate: a locally produced, organic, nutrient-rich soil amendment that every regional farm near an AWE facility can use to reduce its chemical fertiliser bill.
AWE's digestate output has the potential to be further developed and formulated into a specialised, high-performing organic fertiliser product targeting specific crop and soil requirements. This product development pathway is part of AWE's longer-term commercial roadmap — enabling progressively higher-value applications of the digestate stream as the business scales.
Digestate is the nutrient-rich material that remains after organic waste has been processed through anaerobic digestion. When microorganisms break down organic matter to produce biogas, they extract the energy content (carbon) — but they cannot remove the mineral nutrients that were present in the original feedstock. Those nutrients — nitrogen, phosphorus, potassium, and a range of secondary nutrients and trace minerals — remain concentrated in the digestate.
The result is an organic material that is richer in plant-available nutrients than the original feedstock — concentrated, stabilised, and ready for agricultural application as a soil amendment. Unlike raw organic waste, digestate has been through a biological process that reduces odour, eliminates pathogens, and converts the nutrients into forms that are more readily available to plants.
Available in both ammonium (fast-release) and organic (slow-release) forms — supporting both immediate crop needs and longer-term soil nitrogen levels
Plant-available phosphorus retained from the original feedstock — an increasingly expensive nutrient input when sourced from synthetic fertilisers
Potassium content supporting fruit development, disease resistance, and water use efficiency — particularly relevant for horticultural crops in the Murray-Darling region
Calcium, magnesium, sulphur, and a range of trace minerals — supporting balanced soil chemistry and plant health beyond the primary NPK nutrients
At every AWE facility, digestate is produced continuously as a co-product of the anaerobic digestion process. The volume and nutrient profile of the digestate depends on the type and volume of organic waste being processed — but in all cases, the digestate output represents a significant, ongoing stream of organic soil amendment available to regional agricultural land users.
AWE's anaerobic digestion process converts organic feedstocks — fruit and vegetable processing waste, food manufacturing by-products, agricultural residues — into biogas and digestate simultaneously. The biogas is upgraded to biomethane (and CO₂ captured separately). The digestate is the solid and liquid fraction that remains.
Solid fraction (fibre): The solid digestate fraction is rich in organic matter, carbon, and slow-release nutrients. It improves soil structure, water retention, and biological activity — and can be further composted or applied directly as a soil conditioner and organic fertiliser.
Liquid fraction (liquor): The liquid digestate fraction contains high concentrations of soluble nitrogen and potassium in plant-available forms. It can be applied through irrigation systems or as a liquid organic fertiliser, providing fast-acting nutrient availability for seasonal crops.
Quality and pathogen reduction: The anaerobic digestion process reduces pathogen levels and weed seed viability significantly compared to raw organic waste or uncomposted manure — producing a safer, more consistent organic amendment.
AWE's digestate is currently positioned and sold as a certified organic soil amendment that supplements and reduces reliance on chemical fertilisers. The product development pathway toward a specialised, formulated organic fertiliser is part of AWE's longer-term commercial roadmap.
For regional farmers and horticultural operators near AWE's facilities, organic digestate offers a commercially compelling supplement to their existing fertiliser programmes — with benefits that go beyond nutrient supply alone.
Partial substitution of synthetic NPK fertilisers with AWE digestate reduces the total volume of chemical fertiliser required — directly lowering on-farm input costs as chemical prices rise.
AWE digestate is produced at the regional facility near the farms that use it — eliminating the long-distance freight cost that is embedded in every bag of imported synthetic fertiliser.
Organic matter in digestate improves soil structure, water retention, aeration, and biological activity — building long-term soil health that synthetic fertilisers alone cannot achieve.
Nutrients extracted from the regional organic waste that farmers and food processors generate are returned to agricultural land in concentrated, available form — a genuine circular economy outcome.
AWE's digestate is produced from organic feedstocks through a biological process — enabling certified organic certification for applicable farming operations and supporting sustainability reporting.
AWE facilities operate continuously, 365 days per year — providing a consistent, reliable supply of organic digestate to regional farmers under long-term agreements, independent of global fertiliser supply chain volatility.
The digestate AWE produces is not just a by-product — it is the visible proof that AWE's facilities operate as genuine circular economy systems. Organic waste from regional food and agricultural industries is converted into energy, CO₂, and nutrients — all of which are supplied back to the regional businesses and farmers that generated them.
Fruit processing, food manufacturing, and agricultural residues generated by regional operators
Organic matter broken down to produce biogas — biomethane + CO₂ — and digestate
Nutrient-rich organic soil amendment — concentrated, stabilised, pathogen-reduced
Applied to the horticultural and farming land that surrounds AWE's regional facilities
Improved soil health supports the next season of fruit, vegetable, and crop production — generating the next cycle of organic waste
AWE deliberately locates its facilities in or near the agricultural regions that generate organic waste and consume fertiliser — ensuring the digestate output has a ready local market in the farming operations that surround each facility.
Australia's most intensive horticultural production region — table grapes, citrus, stone fruit, almonds, and vegetable crops on irrigated land across the Murray-Darling Basin. AWE's Mildura digestate is targeted to these horticultural operations as a direct supplement to their existing fertiliser programmes.
Intensive fruit, vegetable, and dairy farming region in Victoria. AWE's Cobram project digestate targets the surrounding horticultural and dairy pasture land — where consistent organic nutrient supply and soil health improvement are high priorities for operators managing intensive production systems.
In regional SE Asian farming areas like Cebu, where imported synthetic fertiliser is both expensive and subject to supply chain delays, AWE's locally produced organic digestate provides a cost-effective soil amendment alternative for the agricultural operations surrounding the facility.
In Indonesia's agricultural regions where AWE is evaluating projects, organic digestate from palm oil and agricultural processing waste can be returned to the plantation and farming land that generates the feedstock — completing the circular economy loop at scale.
AWE organic digestate can be applied across a range of agricultural and horticultural contexts, using standard farming equipment and infrastructure. Both the solid and liquid fractions have specific applications suited to different farming systems and crop types.
Solid digestate spread across broadacre horticultural or cropping land before cultivation — incorporating organic matter and nutrients into the soil profile ahead of planting
Liquid digestate fraction applied through existing drip or overhead irrigation systems — delivering soluble nitrogen and potassium directly to the root zone during the growing season
Liquid digestate applied between crop rows during the growing season as a supplemental nitrogen application — particularly suited to vegetable and fruit crops with high in-season nutrient demand
Solid and liquid digestate applied under vine or tree canopies to improve soil organic matter and nutrient availability — directly relevant to AWE's Mildura wine region operations
Digestate applied to dairy and grazing pasture during renovation or interseeding — improving pasture establishment and ongoing soil nitrogen availability for high-production dairy systems
In SE Asian markets, solid digestate can be further composted with other agricultural residues — producing a higher-value blended organic fertiliser suited to tropical cropping systems
If you farm, grow, or manage agricultural land near an AWE facility location in regional Australia or SE Asia and are interested in organic soil amendment supply — we would welcome a conversation. Obligation-free scoping, supply volumes, and commercial terms available on enquiry. Response within 2 business days.
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