Photovoltaic Panels
These rooftop panels convert sunlight into electricity, providing renewable energy that is then used to provide electricity for the common areas, mechanical systems and the elevators.
Water Conservation
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Materials Beneficial to the Environment
Trolley Square
Photo: Mostue & Associates
Building Envelope
Because it is exposed to the elements, the envelope has significant impact on energy use. At Trolley Square walls are insulated with six inches of damp blown cellulose insulation, containing 75-80% recycled newspaper. It packs tightly and controls leaks more effectively than traditional insulation, meaning lower heating costs and quieter, more comfortable apartments.
Windows
Windows at Trolley Square are aluminum-clad, double-paned with an insulated coating. The aluminum has a durable, low-maintenance finish. High-performance glazing helps control heat gain in the summer and heat loss in the winter. Smart placement increases daylight in the building, making the most of natural light and reducing electric lighting. The town homes have front and back windows to provide as much natural light as possible.
Efficient Lighting
Energy-efficient lighting and controls are used throughout the buildings. Occupancy sensors and timers control lights in common areas to reduce energy costs. Daylight sensors save energy by automatically turning off the exterior lights. Exterior light fixtures also aim down, instead of up, to prevent unwanted glare from reaching neighboring buildings and surrounding areas.
Energy Star Appliances
An appliance has two costs – what you pay to take it home and what you pay for the energy and water it uses. Energy Star-qualified appliances incorporate advanced technologies that use 10–50% less energy and water than standard models. In every unit, Energy Star refrigerators and dishwashers replace less efficient models.
Heat Efficient Boilers
The buildings at Trolley Square are heated with energy-efficient central boilers with digital controls. Multiple thermostats in each unit allow the system to provide heat only where it is needed. Therefore north-facing rooms can get additional heat without overheating south-facing rooms.
Criteria Five: Energy Efficiency
Effective building envelope design and construction (or rehabilitation) can save energy and reduce utility bills while increasing the residents’ comfort and health. Meeting or exceeding Energy Star and ASHRAE (American Society of Heating, Refrigerating and Air-Conditioning Engineers) standards, can mean significant reductions in energy use. The creation of energy is itself a burden on the environment because of the cost and damage done by finding and extracting non-renewable resources and the creation of pollution in energy delivery and use. Using less energy means creating less energy, which reduces that burden.
More Information:
Archived Webinar on Energy Efficiency
Energy Efficiency Resources in the Enterprise Resource Database