Commercial & Industrial


Our Skills

Decreasing hotel energy costs while improving the guest experience

ENERGY STAR recently estimated that America’s 47,000 hotels spend an average of $2,200 per room each year on energy. At 6-percent of a hotel’s operating budget, energy costs are the fastest growing expense in the lodging industry. Prudent investments in energy efficiency provide hotel owners and operators cost savings that improve operating income and property values. Furthermore, energy-efficiency investments demonstrate a hotel’s commitment to climate stewardship – a growing expectation of consumers and regulatory institutions.

OpTerra has a proven track record of designing and implementing comprehensive energy service solutions for the hospitality sector. As guest satisfaction, comfort, and convenience are paramount to hotel operators, we design our projects to enrich the hotel brand and respect the guest experience. We are sensitive to capital budgeting and the desire to minimize paybacks on infrastructure improvement investments. Our experienced engineers review projects holistically, and develop information that facility managers can review to support investment decisions including reductions in greenhouse gas emissions, onsite energy generation, and increased comfort levels for guests and staff.

Colonnade Hotel

To help our hospitality customers achieve the best possible return on their energy projects, we identify and secure a range of project financing structures and investment incentives that require low upfront capital, including:

  • Utility incentives and on-bill loans
  • Federal, state and local investment incentives and grants
  • Power purchase agreements

What we do

Heating & Cooling System Retrofit

OpTerra replaced two of the existing water-cooled chillers with one 250-ton frictionless centrifugal chiller. Additional installations included a refrigerant monitoring system, exhaust fan system, and automated control damper to provide fresh supply air to the mechanical room. The hotel ballroom’s air handling units (AHU) were modified to accept return air. In the Colonnade’s 285 guest rooms and throughout the hallways, OpTerra replaced standard-efficiency motors in the fan coil units with ECM motors, which use high-efficiency programmable brushless direct current (DC) motors. A new motor control card was installed in the fan coils to interface with the room temperature control system.

Lighting Retrofit

OpTerra installed energy-efficient lighting with occupancy controls in various areas of the hotel including offices, the kitchen, and the parking garage. LED technology was installed in guest bathrooms, ballrooms, and restaurant and lobby areas. In office areas around the hotel, occupancy sensors were installed to further decrease energy usage by switching off lights in unoccupied areas.

Building Automation

The existing building automation system was replaced with a new system, complete with a user-friendly interface for all the equipment tied to the existing BAS. The new BAS strategies included scheduling, setback, and optimum start/stop controls. BAS controls were installed on the AHU’s existing outside air dampers and new return air dampers. Additionally, the BAS was programmed to set back these AHUs during unoccupied hours and to modulate the dampers to maintain room temperatures.

Hospitality Clients Include:

  • The Colonnade Hotel
  • Four Seasons Hotel
  • Marriott
  • Embassy Suites