EaaS is a pay-for-performance solution that allows public and private sectors to implement multi-measure infrastructure projects without upfront capital expenditure. EaaS, also known as an Energy Savings Agreement (ESA), allows customers to use energy savings to pay for all efficiency upgrades while shifting ongoing service responsibility to the contractor. Additional program benefits include enabling customers to pay with a savings structure, realizing immediate positive operating income, and simplifying procurement. EaaS can eliminate the hassles and delays associated with internal capital expenditure approval processes.