Date: November 2025

Arizona Public Service (APS) operates one of North America’s largest virtual power plants (VPP), with a capacity nearing 200 megawatts (MW). The APS Cool Rewards program, with approximately 100,000 smart thermostats, has driven this growth. Since 2023, APS has installed over 10,000 thermostats through free installation support via APS Marketplace, boosting adoption and demand response (DR) enrollments. A key factor is APS’s partnership with Threshold, ensuring efficient enrollment, installation, and customer education. This presentation will showcase how APS’s partnership with Threshold drives participation, increases customer engagement, and maintains cost-effectiveness.

Speakers:
Iain Shovelin, Arizona Public Service
Brian Hickey, Threshold Group