Unveiling hidden energy poverty using the energy equity gap

Area of Science:

• Environmental Science
• Sociology
• Energy Policy

Background:

• Traditional energy poverty metrics, like energy burden, primarily focus on income and fail to account for behavioral adaptations households make to cope with financial stress.
• Understanding household energy consumption patterns, especially energy-limiting behaviors, is crucial for a comprehensive assessment of energy poverty and insecurity.

Purpose of the Study:

• To introduce and validate a novel metric for energy poverty, the "energy equity gap," which considers behavioral patterns in energy consumption.
• To investigate energy-limiting behaviors in low-income households and compare the prevalence of energy insecurity identified by the new metric versus traditional income-based metrics.

Main Methods:

• Utilized a residential electricity consumption dataset to determine the "inflection temperature"—the outdoor temperature at which households initiate cooling system usage.
• Defined the energy equity gap as the difference in inflection temperatures between low-income and high-income households.
• Compared households identified as energy-poor or energy-insecure by the energy equity gap with those identified by the traditional energy burden metric (10% income threshold).

Main Results:

• The estimated energy equity gap in the study region ranged from 4.7-7.5°F (2.6-4.2°C).
• The study identified 86 energy-poor and 214 energy-insecure households using the energy equity gap metric.
• The traditional energy burden metric identified 141 energy-insecure households, with only three households overlapping with the energy equity gap findings.

Conclusions:

• The energy equity gap metric reveals a significant, previously unrecognized dimension of energy poverty and insecurity by incorporating behavioral factors.
• This new metric offers a complementary perspective to income-based measures, highlighting households that may be overlooked by conventional assessments.
• The findings underscore the need for nuanced approaches to understanding and addressing energy poverty, considering both economic and behavioral aspects.