The table above shows how the total cost of ownership is 39% less for Li-ion. The example used for comparison is a 1MW UPS over a period of 10 years.
(Data extracted from Schneider Electric white paper 229)
Capex calculations are based on, battery cost, install cost and transportation cost.
Opex calculations are based on, battery refresh, energy costs, space lease costs and battery maintenance.
See tables below for full parameters.