Which is a common factor affecting residential energy consumption during summer months?

High humidity levels are a significant factor affecting residential energy consumption during the summer months because they directly influence how comfortable individuals feel in their homes. When humidity levels rise, the air feels warmer and stickier, making people more likely to use energy-intensive cooling systems such as air conditioners and dehumidifiers. This increase in reliance on cooling systems leads to higher electricity consumption.

In contrast, while seasonal allergies can affect comfort levels, they do not directly drive energy usage. Increased work hours may alter individual schedules but do not inherently lead to greater energy consumption per household. Availability of solar energy can influence energy costs and eco-friendly practices but does not directly correlate with residential energy consumption patterns during summer months as humidity does. Thus, the impact of high humidity on cooling needs is the primary reason it is identified as the common factor affecting energy consumption in this context.