This report was published in February 2019 by the American Council for an Energy Efficient Economy and describes how Energy as a Service (EaaS) can help commercial building customers with limited access to capital achieve higher energy, operation and maintenance (O&M) savings. The topics covered include what it means to be an “efficiency-as-a-service” provider, the EaaS model, cost savings opportunities, program approaches, challenges and recommendations for the future. The report would be useful for commercial building customers.
Key words: construction, communications, controls/sensors, energy management, HVAC, natural gas, protocols/standards, utilities

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