PNW · 8-K · 20260804PR000040

Market Demand Trends

PINNACLE WEST CAPITAL CORP · 2026-08-04 · Importance 22 · Surprise 32

Early summer heat increased Arizona Public Service (APS) residential cooling degree days by 7% in the second quarter versus the prior-year period. APS reported 2.1% residential customer growth, 5.6% weather-normalized sales growth, and 9.6% overall sales growth. Higher air-conditioning usage and customer growth sustained load growth across APS’s Arizona service territory.

Key facts

• APS has expanded financial assistance discounts of up to 25% or 60% for eligible vulnerable customers. source
• APS emergency utility bill assistance offers up to $1,000 annually. source
• APS CARE provides up to $500 annually in emergency energy bill assistance. source
• APS achieved robust residential customer growth of 2.1% during the second quarter. source
• APS achieved weather-normalized sales growth of 5.6% during the second quarter. source
• Overall customer growth was 2.1% during the second quarter. source
• APS's call center answers 75% of customer calls within 30 seconds. source