Short answer: buyers and lenders test a biomethanol plant's supply base on five points: volume, quality, certification, contracts and resilience. A 50,000 tonne a year plant needs roughly 80,000 to 165,000 dry tonnes of biomass a year, so the supply area is large and the evidence has to be strong.
Fuel offtakers and lenders both ask the same thing first: can this plant get enough of the right biomass, for long enough? Output follows supply, so the supply base decides what is bankable.
- VolumeEnough tonnes in the weakest month
- QualityMoisture, ash and size tested
- CertificationSustainable and traceable
- ContractsTerm and price that hold
- ResilienceHeadroom and several suppliers
1. Volume
Start with the plant's demand. At typical yields, a plant of 150 tonnes of methanol a day needs about 250 to 500 dry tonnes of biomass each day. Our note on how much biomass a 150 tonne-per-day plant needs shows the sums.
Then test supply:
- the available volume within an economic haul distance;
- competing demand from other mills and power plants;
- the weakest month, not the annual average;
- how supply changes through wet and dry seasons.
2. Quality
Gasifiers are sensitive to moisture, ash, size and contamination. Buyers will want evidence that the material meets the specification. Laboratory results for moisture, ash and calorific value, taken over a season, are more convincing than a single sample. Our guide to assessing biomass feedstock explains what to test.
3. Certification and traceability
Renewable fuel earns its value through documentation. The biomass must come from a source that can be certified as sustainable, and the chain of custody must follow it through the plant to the fuel. A supplier who cannot show where the wood came from may be unable to supply a certified plant at all.
4. Contracts
Lenders look for supply arrangements that run for the financing period, with pricing that stays workable as markets move. They also look at who bears the risk of a shortfall and what the remedy is. Contracts with several suppliers, across more than one catchment, are stronger than one large contract.
5. Resilience
- Headroom. Supply should exceed demand by a sensible margin. Fifteen to 25 percent is a useful starting point.
- Storage. Several days of covered fuel storage smooth short disruptions.
- Alternatives. Know what you would do after a poor season, a mill closure or a transport failure.
Independent assessment
Fuel projects commonly use an independent assessment of the supply base. This gives lenders and buyers a view that does not depend on the developer's own figures. A developer should expect to share the data behind it.
Where suppliers fit
Landowners, foresters, sawmills and aggregators who can offer certified, consistent biomass near a plant are central to a project's success. CNP is developing a biomethanol plant in the United States. If you supply woody biomass, register your interest and tell us what you can offer. Read more about the project and our biomethanol solution.
