This research sheds light on the impact of long-term weather variability on the operation of the European power system and how this scales with uptake of wind and solar power out to 2030. We find that ambitious decarbonization leads to much greater influence of long-term weather patterns, with a. . Explore how solar technology adapts to different weather conditions to deliver reliable energy all year round. Do solar panels work on cloudy days? Yes, solar panels don't need hot, sunny days to work – they need light, not heat. Even when it's cloudy, there's still sunlight getting through, and. .