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New Strategies to Boost Energy Security

Energy systems essential for supporting our everyday activities face increasing threats from wars, pandemics, climate change, and other unexpected events. An international team of researchers, including Sus2Trans’ members Nuno Bento and Tiago Alves, found that demand-oriented solutions have a significantly greater potential to reduce our vulnerability to energy crises compared to supply measures. The results were published in Science

Governments typically rely on policies focused on energy supply to enhance energy security, ignoring demand-side options. Current indicators and indexes that measure energy security focus mostly on energy supply. This aligns with the International Energy Agency’s view, which defines energy security only in terms of security of supply. However, this approach does not fully capture the extent of vulnerability for states, businesses, and individuals during an energy crisis.

“Energy security assessments also need to reflect how vulnerable countries, firms, and households are to energy crises, the advantages of reducing energy demand, and the burden of energy costs,” explains Nuno Bento, a researcher at Iscte and lead author of the paper. “Therefore, we have developed a more systematic approach to measure the energy security impacts of policy interventions, considering both energy supply and demand dimensions. This led us to compare interventions in energy supply along with those in energy demand from sectors such as buildings, transportation, and industry.”

Bento and his colleagues found that actions focusing on reducing demand would be more effective than conventional supply-side approaches in making countries less susceptible to convergent energy crises.

“Energy security is more than security of supply as there are other economic, social, and environmental aspects that are also relevant. This approach benefits from a leverage factor, avoiding cascading losses in successive energy transformations,” explains the team, adding that “the paper highlights that demand-side policies offer clear advantages for energy security improvement across many dimensions, including continuity, affordability, and sustainability.”

In their study, published in Science, the researchers propose that future studies should compare the benefits of various energy security policies by incorporating a demand-side perspective. Instead of relying on partial assessments and problematic indicators like import dependency, they should expand their scope to include a more comprehensive evaluation of the social and environmental impacts.

This study not only aligns with the Sus2Trans project's approach to sustainable decarbonization, but also paves the way for a more integrated understanding of energy security. It confirms the usefulness of a shift towards more systematic analysis that enlarges the traditional focus on the supply-side to encompass demand-side strategies as well.


Bento, N., Grubler, A., Boza-Kiss, B., De Stercke, S., Krey, V., McCollum, D., Zimm, C., Alves, T. (2024). Leverage demand-side policies for energy security Science  DOI: 10.1126/science.adj6150


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