Similar to costs, a higher score on risks entails greater risk
exposure. Unlike the other criteria , the evaluation result for risks
did not show much difference among the various options. However , there were substantial differences among the evaluation
results of expert groups. In general, facilities using electricity , such
as the electricity heater (EH), geothermal heat pump (GH) , and
aero-thermal heat pump (AH), were evaluated as being less risky.
This is mainly owing to the reliability of Korea's power grid and
the assured and stable availability of geothermal and aero-thermal
heat. The wood-pallet fired boiler (WB) scored high on risk
in contrast to the other renewable energy facilities. Korea imports
most of the wood pallets it consumes and , hence , the risk
associated with Fuel supply reliability (R2) was assessed as being higher.