The analysis of different global energy scenarios in part I of the report confirms that the exploitation of energy efficiency potentials and the use of renewable energies play a key role in reaching global CO2 reduction targets.

In part II an assessment on the basis of a broad literature research shows that the technical potentials of renewable energy technologies are a multiple of today’s global final energy consumption.

The analysis of cost estimates for renewable electricity generation technologies and even long term cost projections in part III demonstrates that assumptions across key studies are in reasonable agreement.

In part IV it is displayed that by implementing technical potentials for energy efficiency improvements in demand and supply sectors primary energy supply can be limited to 392 EJ until 2050. This is 55% lower than primary energy supply in the case of a business-as-usual development.

It was found that a large potential for cost-effective measures exists, equivalent to around 55-60% of energy savings of all included efficiency measures (part V).

The results of the analysis on behavioural changes in part VI show that behavioural dimensions are not sufficiently included in energy scenarios. Accordingly major research challenges are revealed.