Energy storage systems have three primary profit models: peak-valley arbitrage (for residential systems), capacity leasing (shared stations), and ancillary service fees (used on the grid side for frequency regulation and load leveling):. Energy storage systems have three primary profit models: peak-valley arbitrage (for residential systems), capacity leasing (shared stations), and ancillary service fees (used on the grid side for frequency regulation and load leveling):. Although academic analysis finds that business models for energy storage are largely unprofitable, annual deployment of storage capacity is globally on the rise (IEA, 2020). One reason may be generous subsidy support and non-financial drivers like a first-mover advantage (Wood Mackenzie, 2019). How. . Rapidly rising energy costs and tightening regulations on carbon emissions are making renewable energy, or “renewables,” increasingly compelling to hospitals. Renewables were once viewed as niche technologies, but improved funding, incentives, and technology have positioned renewable energy to. . An energy storage station is a facility that converts renewable energy sources such as solar and wind into electrical energy and stores it for use during peak demand periods or power system failures. Profitability profitability of individual opportunities ar contradicting. models for investment in energy storage based o the data and assumptions presented in Table 1.