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1 m3 of chips is approx 250 kgs at 30%mc. 1000 kgs of chips at 30% has about 2900 kwh of energy. So 1 m3 is 2900 X 0.2 tonnes = 580 kwh x boiler efficiency (typically 80 -85%) = 493 kwh. Divide by boiler output at full bore (lets say 25kw) = 19 hours running. Figure on a nice big hopper, say 10...

Roughly $6 -7000

Making wood pellets from chips involves a huge amount of investment. You need to dry down to about 9%, hammermill them to dust, and run them through a pellet mill. Then you need a cooling line. Alternatively, you can buy some very neat little pellet mills from China, along with matching tiny...