Case Study: W Hotel San Francisco saves $13,000+/yr and frees engineering time with Verdigris Technologies

Energy Submetering Delivers $10,000+ in Annual Savings

The W Hotel San Francisco (≈400 rooms) faced an unseen-efficiency problem in its award-winning restaurant, TRACE. Chief Engineer Bill DeMartini needed a cost-effective way to monitor kitchen operations 24/7 to go beyond the hotel’s LEED Silver goals and free up engineering staff time, but lacked the granular circuit-level visibility required to diagnose issues.

Verdigris installed high-resolution, circuit-level energy monitoring and within three months uncovered multiple issues: a dishwasher booster heater running overnight (> $5,000/year), a faulty dishwasher heating element causing a phase imbalance (preventing a potential $30,000+ failure), and small after-hours loads (oven, lights, TV) totaling > $7,000/year — more than $13,000/year in aggregate. The data enabled targeted fixes, staff retraining and motion sensors, reducing costs and saving critical engineering time.

W Hotels

Bill Demartini

Chief Engineer