Specifications include, but are not limited to: Providing engineering / consulting services to undertake energy conservation retrofit projects for HVAC and lighting systems along with their associated controls and energy management systems, perform retro-commissioning, analyze and design systems with improved efficiency, and verify savings results post-construction. Consultants will also provide feasibility studies, project development support, design and operation verification for renewable energy projects, such as photovoltaic (PV), solar thermal, fuel cell, or wind turbine systems. Consultants will also provide operational evaluation and economic analyses for district heating and cooling systems, energy plant and customer exchange facilities.