ABSTRACT
In scenario-modelling studies, a range of factors are beyond the control of the user of the study outputs. In the context of long-term UK low carbon energy pathways, the users of scenario exercises such as in this book primarily are UK policy-makers, and a set of external drivers are international in nature (Hughes et al, 2009). Critical global uncertainties include the prices of internationally traded fossil fuels (coal, oil, oil products, natural gas), the availability and cost of greenhouse gas (GHG) credits to meet domestic emissions targets, and the availability (and costs) of sustainable biomass imports.
