Four categories of costs were evaluated: capital, maintenance, energy, and labor.
Life-cycle production costs per MBF (thousand board feet)

Timbergreen Solar Cycle Kiln    $161   
Small Dehumidification kiln        $186   
Large Dehumidification kiln        $158
Small Wood-fired kiln                $240   
Large Wood-fired kiln                $163

The economic analysis reveals the following: 
The Solar Cycle design appear to be competitive with other options.
The Solar Cycle design is characterized by low energy costs and low labor costs.
The success of the Solar Cycle design appears to be primarily attributable to the combination of pre-drying, ease of operation, and a large collector to capacity ratio.     
The findings appear to underscore the value of simplicity in the Solar Cycle Kiln