Technical abatement opportunities up to a cost of €60 per ton of C02e include: energy efficiency, low-emissions energy supply, terrestrial carbon (forestry and agriculture) and behavioural change (figure II.3). The first three options generate a total abatement of 38 Gt CO,e per year in 2030 relative to annual business-as-usual emissions of 70 Gt C02e. Abatement opportunities in these three categories are spread across many sectors of the economy: with approximate figures of 29 per cent for the energy supply sectors (electricity, petroleum and gas), 16 per cent in the industrial sector, 22 per cent in transport, buildings and waste, and 33 per cent in land-use sectors (forestry and agriculture).