With SimpliPhi energy storage, hotels can charge PHI batteries when the cost of energy least expensive and access that reserve to offset costs when electricity demand and rates spike, such as guests turning on their air conditioners on a hot day or when they return to their room in the evening. By limiting a hotel’s need to rely on grid power when it’s likely most expensive and reducing short-term usage spikes, SimpliPhi is able to help hotels reduce their exposure to significant peak demand charges, which can account for as much as 50 percent of their utility bill.