New London Naval Submarine Base

Energy and Water Assessments

Location: New London, CT
Owner: U.S Navy

The New London Naval Submarine Base (SUBASE) is a 680+ acre Naval Base straddling the communities of Groton and Ledyard in New London County, Connecticut. Sain Engineering Associates, Inc. (SEA) conducted energy and water audits of 45 buildings and associated local utility plant buildings encompassing approximately 1.38 million square feet (sq ft). The findings and recommendations of the audit reports were used in conjunction with a design-build team to assist the base personnel in evaluating and developing a decentralized steam plant. The scope of work consisted of furnishing professional services required to perform energy auditing and feasibility analysis, site investigation, system evaluation, and report preparation.

The objectives of this project were to identify energy and water conservation opportunities and develop cost-effective investment projects. The comprehensive energy and water audits included re-commissioning assessments with the focus on renewable energy projects, as well as mechanical, electrical, building envelopes and applicable water conservation projects (e.g., irrigation, landscaping, and domestic use). Each project recommendation included a cost/benefit analysis with modeling of each facility and an Energy Saving Ratio. SEA provided an energy awareness workshop that was customized for this specific site and was conducted at the conclusion of the onsite investigation work. SEA developed a unique ECM Matrix Tool so that the client could take advantage of the ECM Matrix’s ability to sort projects based on a variety of evaluation factors such as technology type, location, simple payback, cost, etc. which helps the client to prioritize and select (or “Rack and Stack”) the ECM selections.

The primary project goals included:

  • Prioritizing ECMs based on the best economics
  • Exceeding the ASHRAE 90.1 – 2007 Energy Efficiency Standards by at least 30% to maximize the energy savings and the incentives available from utility companies or other sources
  • Minimization of maintenance requirements
  • Data analyzed, sorted and discernible by individual building
  • Minimizing cost and maximizing reliability
  • Increasing the quality of the installed equipment and controls
  • Increasing the useful life of the equipment
  • Providing permanence and sustainability of the ECMs installed
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