Integrating electricity markets across regions is vital both for the integration of renewable energies and to control production and distribution costs. But cross-border electricity trade continues to be perceived as potentially risky to security of electricity supply. In response, this report suggests the need for strong co-ordination of electricity security regulatory frameworks across jurisdictions. Based on the experience of International Energy Agency (IEA) member countries, the authors identify two ways to integrate markets over wider geographic areas. They argue the straightforward solution is to consolidate markets and system operations.