|"We harvest sunlight. We can deliver it where you want it."|
- Bruce Rohr, inventor, Practical Solar heliostats
|This Month's Feature Story|
Cost-Effective Green Retrofits: Opportunities for Savings in Existing Buildings (membership required)
Between lighting, water use, mechanical systems,
the building envelope, and occupant health, existing buildings are rife with cost-effective retrofits and operational opportunities that also offer environmental benefits. Improvements range from the painfully obvious to the more complex and involved.
Each of the three Adobe Towers is LEED-EBOM Platinum. Since 2001, a total of $2.3 million in capital costs (including $483,000 in rebates) has resulted in 47% reduced electric use, 42% reduced gas use, and 48% reduced water use, which add up to an annual savings of $1.6 million.
Pavement that allows infiltration of stormwater comes in a variety of types, and offers many environmental and even cost benefits.
Randolph Place Apartments, Richmond, VA
before and after this multifamily renovation gauged improvements in air infiltration. In each unit, the contractor was able to reduce infiltration to less than 0.6 air changes per hour.