Case Study: Duke Energy achieves 1.8 TWh (≈$180M in customer bill savings) with Uplight

Advancing Behavioral Energy Efficiency Programs with Duke Energy

Duke Energy, the largest utility in the U.S. serving 7.5 million customers, partnered with Uplight in 2012 to advance its Behavioral Energy Efficiency (BEE) initiative and position the company as a Trusted Energy Advisor. Facing goals to help customers save money, boost satisfaction, cross-promote products, and improve financials, Duke Energy engaged Uplight’s MyHER program and analytics-driven services (home energy reports, a My Home Energy Interactive portal, eHERs, challenge emails and high bill alerts) to drive customer behavior change at scale.

Uplight implemented personalized paper and electronic Home Energy Reports, a customer web portal, Energy Challenge emails, High Bill Alerts and continuous demand management, backed by ongoing testing and treatment optimization. The program has treated 2.8 million residential customers, delivered more than 79 million reports, and achieved 1.8 terawatt‑hours of savings (about $180 million), with HERs producing up to 2.1% energy savings and an opt‑out rate of only 0.18%. Uplight has also sent over 6 million eHERs (75% open rate), 4 million challenge emails (44% open rate) and 2 million High Bill Alerts (driving ~6% savings and 86% customer satisfaction), demonstrating measurable engagement and financial impact.

Duke Energy