LED street lights illuminate the night and save the day
The Portland Bureau of Transportation is converting 45,000 street lights to Light Emitting Diode (LED) technology. This project is the single largest energy-efficiency project the City has ever undertaken. The LED conversion will result in a savings of 20 million kilowatt-hours of electricity—cutting energy use in half and saving $1.5 million annually. The new LEDs are expected to last up to 20 years without changing bulbs or major maintenance. The project will reduce total carbon emissions from all City operations by about 10 percent.
Eleven LEED-certified buildings and counting
Portland's pioneering green building policies require all new City buildings and major renovations to achieve LEED Gold certification.
Here is an example of one such LEED project at a Fire Station.
Biogas flares and creates electricity
The Bureau of Environmental Services Wastewater Group reduces the flaring of biogas by using it to power, heat and supply resources to the treatment plant as well as to nearby businesses. The engine-generators supply about 40 percent of the wastewater plant’s electrical needs, and the plant recovers heat from water and engine exhaust to use in its anaerobic digesters. The treatment plant also compresses some of its biogas and delivers it via pipeline to a nearby industrial facility to use for process heating.
The Portland Bureau of Transportation saves energy and money in creative ways
PBOT has switched to using warm asphalt instead of hot asphalt in the majority of its paving projects. By switching to warm asphalt there is a 30 to 45 percent reduction in the amount of fuel used to heat the asphalt at the plant. This leads to reductions in air pollutants during the production process. Warm asphalt also produces fewer fumes, and has a longer service life.
Portlandia has green hair — an ecoroof blankets the Portland Building
A number of buildings and structures in Portland have living, vegetated roof systems that decrease runoff and offer aesthetic, air quality, habitat, and energy benefits. There's even an ecoroof sitting high above Portlandia on top of the Portland Building. Learn more and see photos.
City Hall garden grows greens and sows knowledge
Now in its seventh growing season, the former parking lot and grass patch has been transformed into a downtown oasis, where passersby can interact with the process of growing food and be inspired to create their own gardens.
The City of Portland's fleet is on board
The Office of Management and Finance's City Fleet won the National Green Fleet award in 2010. This maintenance shop takes measures to reduce environmental waste by:
- Retreading tires annually to reduce landfill waste.
- Reducing lead purchases.
- Recycling vehicle wash water.
- Using as much B20 (biodiesel) as currently feasible.
- Converting sedan fleet to electric vehicles to meet City goal of reaching 20 percent EV by 2020.
The office is also moving aggressively toward a goal of converting 20 percent of the City's sedan fleet to electric vehicles by 2020.
Water conservation — a longtime priority for Parks
Most of the water consumed by City operations is used to irrigate parks. Water conservation measures have been in place and expanding for many years at Portland Parks and Recreation (PP&R). To date, over eighty parks have climate based, centrally controlled irrigation systems. Parks plans to keep expanding the use of these controls and to explore new water-saving technologies as they emerge.