The global petroleum system is undergoing a shift to substitutes for conventional petroleum (SCPs). The Regional Optimization Model for Emissions from Oil Substitutes, or ROMEO, models this oil transition and its greenhouse gas impacts. ROMEO models the global liquid fuel market in an economic...

This report looks at the most important uncertain details of climate change mitigation policy, depicts the dispersion of implementation details in existing policy proposals, assesses which ones will have greater cost impacts, and then describes the type of scenarios that could have major direct...

We combined an expert elicitation and a bottom-up manufacturing cost model to compare the effects of R&D and demand subsidies. We modeled their effects on the future costs of a low-carbon energy technology that is not currently commercially available, purely organic photovoltaics (PV). We found...