We strive to continuously improve the lives of our customers by identifying beneficial uses for coal combustion byproducts (CCB); recycling used oil; and engaging in water, biodiversity and habitat conservation activities whenever possible. We align our business practices with societal needs and expectations by investing in complementary innovative technologies to control emissions as well as minimize water consumption and waste generation.
Reducing Air Emissions
- AES Mong Duong (Vietnam, Asia SBU): Implemented air emission controls by prohibiting idling of vehicles, performing mandatory vehicle inspections, watering the site and installing a more energy-efficient tire-washing station.
- AES Nueva Renca (Chile, Andes SBU): Installed a system to reduce nitrogen oxide emissions (NOx) from its gas turbine and supplementary burners by 60 percent.
- AES Parana (Argentina, Andes SBU): AES Parana, an 845 MW combined cycle plant, was the first large thermoelectric power plant in the world to use biodiesel as a fuel source. This allows the plant to reduce emissions, convert soy beans and other vegetables into power, and conserve the use of fossil fuels.
- Dayton Power and Light (United States SBU): Installed five Chiyoda scrubbers, which have a sulfur dioxide (SO2) reduction rating of 95 percent, at the Stuart and Killen stations. The scrubbers convert SO2 into high-quality gypsum for use by the wallboard industry.
- Ust-Kamenogorsk CHP (Kazakhstan, Europe SBU): Installed high-efficiency nozzles at three coal-fired boilers, yielding a 20 percent reduction in NOx emissions. Installed new flue gas ash-removal equipment at eight boilers, reducing particulate matter emissions by 53 percent and sulfur emissions by 5 percent.
- AES Bulgaria (Europe SBU): Constructed a state-of-the-art waste disposal facility to serve the 670 MW Maritza coal-fired power plant.
- AES Eletropaulo (Brazil SBU): Led the implementation of solar photovoltaic panels in a soccer stadium and a major park in São Paulo.
- AES Eletropaulo and AES Sul (Brazil SBU): Implemented a series of efficiency initiatives, which resulted in the savings of 2,000 tons of carbon dioxide (CO2).
- AES Nejapa (El Salvador, MCAC SBU): Established the collection of methane gas generated in a sanitary landfill that receives approximately 2,000 tons of waste per day. Converts that gas into electricity with six 1-MW engines.
- AES Tiete (Brazil SBU): Developed a project to research alternative technologies for the implementation of geothermal electricity generation from low-temperature sources.
Resource Conservation and Protection
- AES Amman East (Jordan, Europe SBU): Decreased water consumption by 6 percent through the reuse of evaporation pond water for blowdown quenching.
- AES Andres (Dominican Republic, MCAC SBU): Achieved 34 percent lower water consumption levels compared to 2009 levels by substituting de-mineralized water in the plant’s natural gas combustion system.
- AES Itabo (Dominican Republic, MCAC SBU): Decreased water consumption by 20 percent through the reuse of wastewater for irrigation, road cleaning and bottom ash.
- Southland Alamitos (US SBU): Supports local efforts to clean and restore the Los Cerritos Wetlands in Alamitos Bay using natural tides, currents and a boom installed upstream of plant's intake.
- Ust-Kamenogorsk CHP (Kazakhstan, Europe SBU): Constructed a new cooling tower to decrease water consumption from the Ulba River by up to 47.9 percent.
Coal Combustion Products (CCPs) Recycle and Reuse
- AES El Salvador (MCAC SBU): Recycled more than 95,063 pounds of paper annually since 2007, and donated the proceeds to protect 1,069 hectares in local national parks.
- AES Itabo (Dominican Republic, MCAC SBU): Recycled 100 percent of 72,817 tons of ash from a coal-fired power plant in 2011, which was reused by the local cement industry.
- AES Panama (MCAC SBU): Works with local schools to recycle solid waste.
- AES Southland (United States SBU): Installed smart sponge technology to capture used oil and reduce oil waste by 200,000 gallons per year.
Biodiversity and Archeological Resources Highlights
- AES Arlington (Global Headquarters): Removed invasive species, restored habitat and assembled nesting boxes for bats, ducks and songbirds at a local park.
- AES Changuinola (Panama, MCAC SBU): Planted 880,250 trees in the Changuinola river basin to reforest approximately 800 hectares. Trees are supplied by local nurseries created to support this effort.
- AES Eletropaulo (Brazil SBU): Worked with local institutions to establish indicators of environmental impact on primate populations that inhabit places with potential interference from electrical systems. Findings will be applied to reduce potential impacts and improve both new and existing projects.
- AES Tietê (Brazil SBU): Protected more than 100 archeological sites, and restored the Pacu fish to native habitats by releasing more than 2.5 million fish per year, allowing the Pacu to be removed from the endangered species list.
- EHS Leaders (El Salvador, MCAC SBU): Built nests for the local sea turtles at beach in El Salvador.
- Indianapolis Power and Light (United States SBU): Partnered with the Indiana Department of Natural Resources to band and track peregrine falcons in nest box on the roof at the AES Harding Street Station.