Thread by @IRENA

"Development is not the big issue here – both on the engine and fuel side. The problem is the business case. So far it makes no financial sense to build zero emission ships." – Jakob Steffensen, @DFDSGroup Head of Innovation & Technology #IVIW2020

.@hellings_bart of @GoodFuelsmarine is convinced that the #ammonia and #methanol route is promising, but the business case is not yet there as current demand is insufficient. #IVIW2020

“#Aviation contributes 2-3% of CO2 emissions, but takes decarbonising very seriously. There's no silver bullet to eliminate our impact, we need a series of solutions: batteries; fuel cell tech; & H2 combustion engines—a #renewables surrogate.”—@Airbus’s Glenn Llewellyn #IVIW2020

"Certainly #biofuels and other #renewables can play a key role, but we need to create the market for the next decade. Action is needed from the gov't to support mainstreaming these options" - Valentin Batteiger, Lead Alternative Fuels, #BauhausLuftfahrt #IVIW2020

"Scalability and meeting the demand of the entire aviation industry will be a challenge. There is not clear winner but #efuels will certainly be one of the interesting solutions particularly in view of falling #renewables costs." - @SKYNRG's Oskar Meijerink #IVIW2020