Efficiency in Generation

At AES, we provide diverse fuel technologies that are well-suited to the individual markets in which we operate. Our businesses share expertise in building and operating plants that use coal, diesel, hydropower, gas, oil, wind, solar and biomass to generate electricity.

Our generation businesses help energy markets meet their existing and growing electricity supply needs. We have assisted with the construction of new state-of-the-art power plants, and we have applied advanced fuel combustion technologies at existing power plants to maximize capacity and optimize availability.

AES Energy Storage

AES Energy Storage, a subsidiary of The AES Corporation, is the owner-operator of advanced storage projects that provide emissions-free capacity to improve the performance and reliability of today's power grid. Emissions-free capacity is a fast and flexible power system resource, combining patented software, dynamic power control and storage technology. AES Energy Storage deploys and operates stored electricity capacity projects to help utilities, power markets and renewable developers level the variability of generation and demand on the grid, reduce operating costs and meet future power system needs. Established in 2007, AES Energy Storage currently has 76 MW of battery-based energy storage in operation and 500 MW in development.

Watch our AES Energy Storage Video

For more information on AES' energy storage, please visit www.aesenergystorage.com

Generation Performance

Key Performance Indicators (KPIs)

AES also has implemented a uniform system of KPIs to monitor our generation businesses. Through the measuring, tracking and reporting of KPIs, AES has seen marked improvement in several operational performance areas over the past three to five years.

Equivalent Availability Factor (EAF) represents the percentage of the time that a power plant is capable of producing energy. EAF is normally less than 100% to provide for maintenance. While EAF does not consider the actual energy produced, Net Capacity Factor (NCF) is the percentage of actual energy produced compared to the most energy that the equipment was capable of producing. Finally, Equivalent Forced Outage Factor (EFOF) is the percentage of the time that a plant is not capable of producing energy due to unplanned operational reductions in production.

Wind and Solar

AES has leveraged its expertise in a wide range of fuel technologies to expand beyond thermal energy sources into renewables and alternative sources in many countries. We have invested in renewable and alternative fuel sources, such as wind, solar and hydroelectric power to deliver a mix of energy solutions that respond to market demands.

In 2005, AES launched its wind business, which now has approximately 1,800 MW of wind generation in operation across the USA and Europe. In 2008, we also entered into a joint venture with solar company Riverstone Holdings LLC. AES now has more than 46 utility-scale solar photovoltaic plants totaling 256 MW either in operation or under construction in Bulgaria, France, Greece, India, Italy, Spain and the USA.

For more information regarding our generation businesses,
please see AES Locations.

AES' utilities deliver reliable and affordable electricity to approximately 11 million customers in 27 markets worldwide. AES has 13 distribution companies powering major cities, from São Paulo to Indianapolis to Douala. We have expanded electricity access to first-time customers in Brazil, Cameroon and El Salvador, and we seek to modernize distribution networks to transmit power and heat efficiently and safely in markets around the world.

AES Utilities Quick Facts

• Thirteen distribution companies around the world
• More than 12.1 million customers
• 79,567 GWh of energy sold
• Fuels: biomass, diesel, coal, gas and hydro
• Total generation: 19,309 MW
• Generation Under Construction: 216 MW

AES Utilities Highlights

• Argentina: One of the largest private power generators, with approximately 12 percent of total installed capacity.
• Brazil: AES Eletropaulo is the largest electric utility in Latin America serving more than 6 million customers.
• Cameroon: Our integrated utility AES Sonel is the fifth largest company in the country.
• Dominican Republic: AES is the largest privately-owned generator and owns the country's only port that receives liquefied natural gas (LNG).
• El Salvador: AES distributes electricity to 80 percent of the country.
• Kazakhstan: AES is the only foreign investor in the electricity sector.
• Nigeria: AES Ebute is the country's third-largest independent power producer.
• Panama: AES is the country's main electricity generator, and the largest private hydro generator in Central America.
• United States: IPL, in Indianapolis, Indiana, is one of the area's leading employers.
• Ukraine: AES Ukraine supplies electricity to 70,000 km of power lines, equal to twice the Earth's circumference.

Ensuring Reliability

Guaranteeing a steady supply of electricity at any given time requires that our businesses employ modern technologies for power delivery and monitoring system reliability. Reliability is tracked by average number and duration of system interruptions per customer, weighted based on ownership adjusted EBITDA. Our distribution businesses have made system upgrades to improve power delivery and, as a result, customer interruptions have decreased and reliability has improved.