|Born||1942 (age 79–80)|
|Education|| University of Colorado (BA)|
Columbia University (MBA)
|Children||3, including Sean|
Thomas R. Casten is an American businessman, author, and activist known for his work on industrial energy recycling. Since 1977, Casten has founded and managed numerous companies and organizations associated with combined heat and power (also called cogeneration), decentralized energy, and waste energy recovery.
Casten is a fellow of the Committee for Skeptical Inquiry  and a former U.S. Marine and Eagle Scout. 
Casten graduated magna cum laude from the University of Colorado Boulder and was valedictorian of his graduating class at Columbia Business School. 
Casten was the founding president and CEO of Trigen Energy Corporation (a New York Stock Exchange corporation) and its predecessors from 1977 through 2000. He served until 2006 as founding chair and CEO of Primary Energy and its subsidiary Primary Energy Recycling Corp. In 2006 he founded and was chairman of Recycled Energy Development (RED), based in Westmont, Illinois. In 2016 RED was sold to Ironclad Energy Partners.   These companies focused on energy recycling, a process that turns waste energy (usually heat) into clean power and steam.  Casten has said his goal is to combat global warming in a profitable way, reducing greenhouse gas emissions and energy costs at the same time. 
Casten has served as president of the International District Energy Association and co-founder and chairman of the World Alliance for Decentralized Energy, which are trade associations that promote combined heat and power, district heating, and other forms of distributed generation. Casten also serves on numerous boards for energy-related institutions, has testified before the energy committees of the U.S. Congress, and served on the informal policy advisory team of then-presidential candidate Barack Obama in 2008. 
Casten is the author of Turning Off the Heat: Why America Must Double Energy Efficiency to Save Money and Reduce Global Warming.  He has also published articles in outlets including American Scientist,  the Detroit Free Press,  Electricity Journal,  and the Albuquerque Journal,  as well as a chapter in Energy and American Society: Thirteen Myths.  His work on energy recycling received profiles in Forbes,  Smithsonian,  Nature,  US News,  The Atlantic,  Orian,  and National Public Radio. 
Casten and his wife, Judy, celebrated their 50th wedding anniversary by running the Chicago marathon in 2015.  Casten's son, Sean, was elected to the U.S. House of Representatives in 2018.  He has two other children: Damien and Gillian.
Tom is the lone funder of SunshinePAC which contributed to Sean Casten's 2018 election campaign. These contributions became a source of a complaint to the FEC in February 2022.  
Nuclear power is the use of nuclear reactions to produce electricity. Nuclear power can be obtained from nuclear fission, nuclear decay and nuclear fusion reactions. Presently, the vast majority of electricity from nuclear power is produced by nuclear fission of uranium and plutonium in nuclear power plants. Nuclear decay processes are used in niche applications such as radioisotope thermoelectric generators in some space probes such as Voyager 2. Generating electricity from fusion power remains the focus of international research.
Renewable energy is energy that is collected from renewable resources that are naturally replenished on a human timescale. It includes sources such as sunlight, wind, the movement of water, and geothermal heat. Although most renewable energy sources are sustainable, some are not. For example, some biomass sources are considered unsustainable at current rates of exploitation. Renewable energy often provides energy for electricity generation to a grid, air and water heating/cooling, and stand-alone power systems.
A nuclear power plant is a thermal power station in which the heat source is a nuclear reactor. As is typical of thermal power stations, heat is used to generate steam that drives a steam turbine connected to a generator that produces electricity. As of 2022, the International Atomic Energy Agency reported there were 439 nuclear power reactors in operation in 32 countries around the world.
Waste management or waste disposal includes the processes and actions required to manage waste from its inception to its final disposal. This includes the collection, transport, treatment and disposal of waste, together with monitoring and regulation of the waste management process and waste-related laws, technologies, economic mechanisms.
Incineration is a waste treatment process that involves the combustion of substances contained in waste materials. Industrial plants for waste incineration are commonly referred to as waste-to-energy facilities. Incineration and other high-temperature waste treatment systems are described as "thermal treatment". Incineration of waste materials converts the waste into ash, flue gas and heat. The ash is mostly formed by the inorganic constituents of the waste and may take the form of solid lumps or particulates carried by the flue gas. The flue gases must be cleaned of gaseous and particulate pollutants before they are dispersed into the atmosphere. In some cases, the heat that is generated by incineration can be used to generate electric power.
Sustainable living describes a lifestyle that attempts to reduce the use of Earth's natural resources by an individual or society. It is often called "earth harmony living" or "net zero living". Its practitioners often attempt to reduce their ecological footprint by altering their home designs and methods of transportation, energy consumption and diet. Its proponents aim to conduct their lives in ways that are consistent with sustainability, naturally balanced, and respectful of humanity's symbiotic relationship with the Earth's natural ecology. The practice and general philosophy of ecological living closely follows the overall principles of sustainable development.
Cogeneration or combined heat and power (CHP) is the use of a heat engine or power station to generate electricity and useful heat at the same time.
Energy is sustainable if it "meets the needs of the present without compromising the ability of future generations to meet their own needs". Most definitions of sustainable energy include considerations of environmental aspects such as greenhouse gas emissions and social and economic aspects such as energy poverty. Renewable energy sources such as wind, hydroelectric power, solar, and geothermal energy are generally far more sustainable than fossil fuel sources. However, some renewable energy projects, such as the clearing of forests to produce biofuels, can cause severe environmental damage. The role of non-renewable energy sources in sustainable energy has been controversial. Nuclear power is a low-carbon source whose historic mortality rates are comparable to wind and solar, but its sustainability has been debated because of concerns about radioactive waste, nuclear proliferation, and accidents. Switching from coal to natural gas has environmental benefits, including a lower climate impact, but may lead to a delay in switching to more sustainable options. Carbon capture and storage can be built into power plants to remove their carbon dioxide emissions, but is expensive and has seldom been implemented.
The recycling of paper is the process by which waste paper is turned into new paper products. It has a number of important benefits: It saves waste paper from occupying homes of people and producing methane as it breaks down. Because paper fibre contains carbon, recycling keeps the carbon locked up for longer and out of the atmosphere. Around two-thirds of all paper products in the US are now recovered and recycled, although it does not all become new paper. After repeated processing the fibres become too short for the production of new paper, which is why virgin fibre is frequently added to the pulp recipe.
A fossil fuel power station is a thermal power station which burns a fossil fuel, such as coal or natural gas, to produce electricity. Fossil fuel power stations have machinery to convert the heat energy of combustion into mechanical energy, which then operates an electrical generator. The prime mover may be a steam turbine, a gas turbine or, in small plants, a reciprocating gas engine. All plants use the energy extracted from the expansion of a hot gas, either steam or combustion gases. Although different energy conversion methods exist, all thermal power station conversion methods have their efficiency limited by the Carnot efficiency and therefore produce waste heat.
Fortum Oyj is a Finnish state-owned energy company located in Espoo, Finland. In addition to Finland, it focuses on Germany and other countries in Central Europe, Great Britain, Russia and the Nordic region. Fortum operates power plants, including co-generation plants, and generates and sells electricity and heat. The company also sells waste services such as recycling, reutilisation, final disposal solutions and soil remediation and environmental constructions services, and other energy-related services and products e.g. consultancy services for power plants and electric vehicle charging. Fortum is listed on the NASDAQ OMX Helsinki stock exchange.
Green computing, green IT, or ICT sustainability, is the study and practice of environmentally sustainable computing or IT.
District heating is a system for distributing heat generated in a centralized location through a system of insulated pipes for residential and commercial heating requirements such as space heating and water heating. The heat is often obtained from a cogeneration plant burning fossil fuels or biomass, but heat-only boiler stations, geothermal heating, heat pumps and central solar heating are also used, as well as heat waste from factories and nuclear power electricity generation. District heating plants can provide higher efficiencies and better pollution control than localized boilers. According to some research, district heating with combined heat and power (CHPDH) is the cheapest method of cutting carbon emissions, and has one of the lowest carbon footprints of all fossil generation plants.
Waste Management, Inc., doing business as WM, is a waste management, comprehensive waste, and environmental services company operating in North America. Founded in 1968, the company is headquartered in the Bank of America Tower in Houston, Texas.
Energy recovery includes any technique or method of minimizing the input of energy to an overall system by the exchange of energy from one sub-system of the overall system with another. The energy can be in any form in either subsystem, but most energy recovery systems exchange thermal energy in either sensible or latent form.
The Sheffield Energy Recovery Facility, also known as the Energy from Waste Plant, is a modern incinerator which treats Sheffield's household waste. It is notable as it not only provides electricity from the combustion of waste but also supplies heat to a local district heating scheme, making it one of the most advanced, energy efficient incineration plants in the UK. In 2004, the district heating network prevented 15,108 tonnes of CO2 from being released from buildings across the city, compared to energy derived from fossil fuels. The incinerator is a 'static asset' owned by Sheffield City Council and operated by Veolia Environmental Services under a 35 year integrated waste management contract (IWMC)/PFI contract.
Energy recycling is the energy recovery process of utilizing energy that would normally be wasted, usually by converting it into electricity or thermal energy. Undertaken at manufacturing facilities, power plants, and large institutions such as hospitals and universities, it significantly increases efficiency, thereby reducing energy costs and greenhouse gas pollution simultaneously. The process is noted for its potential to mitigate global warming profitably. This work is usually done in the form of combined heat and power or waste heat recovery.
Covanta Holding Corporation is a public company headquartered in Morristown, New Jersey. It provides energy-from-waste and industrial waste management services. Most of its revenue comes from operating power plants that burn trash as fuel. Covanta charges a fee for waste disposal, sells electricity produced in the process, and recovers metal for recycling.
Recycled Energy Development, LLC (RED) aims to profitably reduce greenhouse gas emissions by capturing and recycling waste energy, especially through cogeneration and waste heat recovery.
Sean Thomas Casten is an American businessman and politician serving as the U.S. representative for Illinois's 6th congressional district. The district covers portions of five counties in Chicago's western suburbs, including Wheaton, Palatine, and Barrington.