BLOGS / Staff


The IEA, 27% biofuels and the cost of indirect land use change

A few weeks ago, the IEA published a roadmap for biofuels in transportation. This argues that 27% of transport energy needs worldwide could be met with biofuels by 2050, saving a cumulative 20 billion tonnes (Gt) of carbon dioxide emissions over the next 40 years – all without affecting food security. The headline messaging for the report has been broadly represented (,, as a call for continuation and expansion of existing biofuel mandates. By 2050, the roadmap assumes 32 exajoules of biofuel production, split 50:50 between crop-based and waste-based fuels, and that the crops will require 70 million hectares (Mha) of land to grow.

Find it In: Biofuels, Indirect land use change (ILUC), Indirect land use change (ILUC), Fuels

The importance of mandatory standards

Recent trends in specific CO2 emissions from new passenger cars registered in Europe highlight the significant difference that mandatory emissions performance standards can make.

Find it In: CO2 standards, EU light-duty vehicle CO2 regulation, EU vehicle targets, Fuel economy, GHG standards, Global Roadmap, Passenger Vehicles, Vehicle emissions standards

Chart of the day: Gas prices and driving habits

Chart shows, for the United States, miles driven per capita each year versus gasoline prices.

Find it In: Fuel consumption

One (Vehicle Efficiency) Table to Rule Them All

GHG emissions, fuel economy and consumption, and standards.

Find it In: Passenger Vehicles

Fuel consumption vs. fuel economy

The metrics of fuel consumption and greenhouse gas emissions have the advantage of being linear.

Find it In: Fuel consumption, GHG emissions, Fuels

Chart of the day: Electric cars, 1860–2008

Trends in the occurrence of the phrase “electric car” in English-language books in the Google database since 1860.

Find it In: Electric Vehicles