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A survey of 23 companies by RMI and the Mission Possible Partnership reveals that airlines and corporate customers are willing to pay a significant green premium for sustainable aviation fuel (SAF) and SAF certificates (SAFc). Airlines showed an average WTP of $6 per gallon, while corporate buyers averaged $300 per ton of CO2 abated. The study finds a preference for waste-based feedstocks and shorter contract durations. These findings suggest that SAF projects, particularly those using the HEFA pathway, could be bankable today by meeting the financial returns required by investors.

The research evaluates the trade-offs between reducing hydropeaking to improve river ecology and the potential increase in CO2 emissions. Findings indicate that individuals generally prefer stronger restrictions on short-term regulations to benefit fish stocks, recreational use, and the ecological state, with these benefits outweighing the disutility of increased CO2 emissions. The study emphasizes the need to account for unobserved preference heterogeneity in willingness-to-pay estimations.

The research evaluates public preference and welfare effects regarding the siting of wind farms versus marine protected areas off the coast of Estonia. Using a latent class mixed logit model, the study finds that while conventional wind farms are generally opposed in favor of marine protected areas, 'environmentally-friendly' wind farms provide welfare benefits that are not statistically different from those of marine protected areas.