|The Energy Smart Services Demonstration Technology Bonus List
The following energy conservation measures are eligible for a bonus equal to 10% of the normal Seattle City Light Energy Smart Services funding level. The purpose of this bonus is to promote energy efficiency through innovative manufacturing, design and equipment selection. For more information, call 206.684.3254.
- Card–key Operation of Hotel Room Lighting – in Existing Construction
Enable hotel room lighting, both hard–wired and plug–in, using the same card–key that allows the occupant to open the hall door.
- Integral LED Night–light Occupancy Sensor Combination to Control Hotel Bathroom Lighting – New and Existing Construction
Install an occupancy sensor control that includes a night light. The night light comes on only when the occupancy sensor senses the bathroom is unoccupied. Increases acceptance of occupancy sensor control of bathroom lighting by offering enough illumination that occupants can find the bathroom safely when the other lights are off.
- LED lighting – in Existing Facilities
LED (light emitting diode) lighting is evolving and shows increasing promise for a variety of interior and exterior applications. This bonus applies to replacement of fluorescent, incandescent, neon or HID light sources with screw-in and hardwired LED lighting. To qualify for this bonus the LED lamps/fixtures must be UL listed and appear on either the Energy Star, Design Lights Consortium or Lighting Design Lab Lists. This bonus does not include LED exit signs or holiday lights.
- LED lighting – in New Facilities
This LED bonus is available in new construction facilities only for exterior signage with programmed (automatically changing) messaging that utilizes only LED–type lamps.
- Lighting fixtures with advanced local lighting controls – in Existing Facilities
This bonus is available for fixtures that include, at a minimum, the following lighting controls integral to each fixture and capable of producing a separate lighting control zone for each fixture:
In order to be eligible for this bonus, the fixtures must be installed directly over individual desk areas (producing a non–uniform lighting pattern), and the fixtures must communicate through a computer network to allow monitoring of fixture use and control of wider zones.
- Occupancy sensor control that senses the area directly served by the fixture
- Photocell sensor of light levels in the area directly served by the fixture
- Combination Occupancy Sensor with Photocell to take advantage of natural light while also sensing movement and turning the fixture(s) off whenever possible
- Personal lighting level adjustment control with separate input for the individual occupant of space directly served by the fixture
HVAC and Industrial Process Loads
- Occupancy Sensor HVAC Controls – Existing Facilities
Introduce occupancy sensors that control both zone lighting and, through the building´s direct digital control (DDC) system: zone HVAC. When in unoccupied mode, at least reduce the minimum ventilation air to zero and cycle off the zone fan when zone within the deadband between heating and cooling setpoints.
- Heat Recovery to Displace Electric Resistance Heat – Existing and New Facilities
Use heat pumps to both air condition and pre–heat domestic hot water. Recover heat from steam condensate for steam purchased from Seattle Steam.
- Electrically commutated motors (ECMs) for series variable air volume zone terminal fans
Electrically commutated motors (ECMs) offer a higher energy efficiency and controllability than the traditional motors used to drive variable air volume zone terminal fans.
- Replacement of standard motors with ECMs – in Existing Facilities
This bonus is available even if the ECM motor is operated at a constant speed.
- Automatic speed control of ECMs – in New and Existing Facilities
This bonus is available for those who would like to go beyond the standard ECM installation, by adding automatic speed control of the ECM fan motor in a manner that reduces energy consumption below that of a constant speed ECM installation. The bonus is only available if the energy savings are achieved without reducing outside air ventilation levels during occupied hours below ventilation levels available with constant speed ECM operation. Applicable in new and existing commercial buildings.
- Air–side economizers for data centers – Existing Facilities
Install 100% outside–air cooling capability in a data center to provide free cooling where outside air was previously provided only for satisfying the minimum ventilation requirements. Because data centers require air conditioning year–round, significant energy savings are realized by using outside air for free cooling.
- Heat–pump domestic hot–water heaters that also provide air conditioning - New and Existing Facilities
The proposed measure uses a heat pump to cool (air condition) the surrounding space while heating domestic water, and includes controls (including valves, piping, ductwork and dampers) to assure that air conditioning and water heating are provided only as needed. Beneficial for locations such as laundries and kitchens with high use of domestic hot water and air conditioning year round. Not available for hydronic–loop heat pumps in new construction. In existing facilities, must replace a hot water heater that uses electric resistance heat.
- Conversion of industrial equipment from compressed air to direct drive – in Existing Facilities
Compressed air is often used in industry to drive processes that could be achieved using far less electricity. Electricity savings of up to 80% may be realized by switching from use of compressed air to direct–drive (via electric motor) for applications such as cooling, drying, conveying, mixing, and cleaning. This type of measure requires familiarity with the specific application, but creative thinking can yield strong economic benefits.
- Clean–on–demand compressed air controls for baghouses – in Existing Facilities
Baghouse bag filters are typically cleaned with pulses of compressed air. Some controls issue pulses at regular time intervals, regardless of the level of need. This bonus is available for replacing baghouse compressed air controls that issue pulses at fixed time intervals with controls that issue pulses based on measurement of the differential pressure across the bag filters. Potential benefits include energy savings and longer bag filter life.
- Replacing desiccant compressed air dryers with refrigerated dryers – in Existing Facilities
Sometimes desiccant dryers are used where the dewpoint achievable with a refrigerated dryer would suffice. This bonus is available to customers willing to have their desiccant dryer permanently removed and replaced by a cycling refrigerated dryer. Benefits include reduced operating costs by reduced use of both electricity and desiccant fill.
- Replacing existing desiccant compressed air dryers that use electric resistance heat with heat–of–compression desiccant dryers – New and Existing Facilities
Where very dry air is needed, the customer should consider replacing their standard desiccant air dryer with a desiccant dryer that uses waste heat from the compressor to regenerate the desiccant.
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