Fig. 3: The relationship between the highest reliability of electricity supply system and country area among 42 major countries.
From: Geophysical constraints on the reliability of solar and wind power worldwide
Shading of bubbles represents the annual average hours of long-duration (>24 h) power supply gaps. Storage and generation quantities are varied in each panel: a 1x generation without storage; b 1x generation with 3 h of storage; c 1x generation with 12 h of storage; d 1.5x generation without storage; e 1.5x generation with 3 h of storage; and f 1.5x generation with 12 h of storage.
