Considerations Availability of material Is there room on site? Have you are good maintenance team? Do you want a simple system or are you prepared to drive the boiler? Is CO2 required? Is the boiler centralised? Do you have a back up system?
Is the UK geared up to wood burning? What I wanted: Chipped wood delivered At a known moisture content At an agreed spec
ARE: Boiler agents in the UK really Knowledgeable in burning wood and other biomass materials? Foresters, sawmills and recylclers aware of our needs? Woodchip machine manufacturers, or their UK agents, knowledgeable in our requirements?
NO! The UK does not have the culture to understand the requirement. It requires an organisation to bring all these parties together.
What are the savings? Chipped wood at £35/tonne at a 33% moisture content = 1p/kw. Allow 0.5p/Kw for maintenance. Approximately 40 percent of gas oil after horticultural rebate.
Do the economics stack up? Cost of installation high Approximately £1.7k/Mw Approximate payback in 4-8 years
But remember: If you want to be hassle free, Need CO2 enrichment Have a clean nursery area and willing to pay for that convenience Perhaps forget Biomass – for the time being at least!
If you are going to be a Carbon Neutral grower let it be known