Benefits of a TES Tank: Cost Resilience and Sustainability Outcomes The benefits of a TES tank are demand-charge reduction (often the largest saving), ride-through resilience of 15 to 30 minutes on a chiller trip, a smaller chiller plant for the same peak, chiller protection from short-cycling, and sustainability through off-peak load shifting. Published references cite demand-charge savings of roughly 72,000 to 120,000 USD per year on a 1,000-ton plant shifting 40 percent of