Incinerators: Dinosaurs in the world of energy generation
In this article, we’ll take a look at the current trend in “re-branding” incineration as a viable option to deal with the mountains of garbage generated by our society. Incineration can produce energy for electricity, but can the costs—both economically, and ecologically—justify the benefits? What are the alternatives?
Changes in our waste stream
In today’s world of consumerism and production, waste disposal is a chronic problem facing most communities worldwide. Lack of attention to recycling and composting, as well as ubiquitous dependence on plastics, synthetics, and poorly-constructed or single-use goods has created a waste crisis in the United States. So much of the waste that we create could be recycled or composted, however, taking extraordinary levels of pressure off our landfills. According to estimates in 2017 by the US Environmental Protection Agency (EPA), over 30 percent of municipal solid waste is made up of organic matter like food waste, wood, and yard trimmings, almost all of which could be composted. Paper, glass, and metals – also recyclable – make up nearly 40 percent of the residential waste stream. Recycling plastic, a material which comprises 13% of the waste stream, has largely been a failed endeavor thus far.
Why say NO to incinerators?
Figure 1: A breakdown of the 267.78 million tons of municipal waste that were generated in the US in 2017. Source: figure developed by FracTracker Alliance, based on 2017 EPA data. Source: https://www.epa.gov/facts-and-figures-about-materials-waste-and-recycling/national-overview-facts-and-figures-materials
Nevertheless, of the approximately 400 million tons of plastic produced annually around the world, only about 10% of it is recycled. The rest winds up in the waste stream or as microfragments (or microplastics) in our oceans, freshwater lakes, and streams.
Figure 2: Increase in global plastics production, 1950-2015, Source: Geyer, R., Jambeck, J. R., & Law, K. L. (2017). Production, use, and fate of all plastics ever made. Science Advances, 3(7), e1700782. Available at: http://advances.sciencemag.org/content/3/7/e1700782 Referenced in https://ourworldindata.org/plastic-pollution
According to an EPA fact sheet, by 2017, municipal solid waste generation increased three-fold compared with 1960. In 1960, that number was 88.1 million tons. By 2017, this number had risen to nearly 267.8 million tons. Over that same period, per-capita waste generation rose from 2.68 pounds per person per day, to 4.38 pounds per person per day, as our culture became more wed to disposable items.
The EPA provides a robust “facts and figures” breakdown of waste generation and disposal here. In 2017, 42.53 million tons of US waste was shipped to landfills, which are under increasing pressure to expand and receive larger and larger loads from surrounding area, and, in some cases, hundreds of miles away.
How are Americans doing in reducing waste?
On average, in 2017, Americans recycled and composted 35.2% of our individual waste generation rate of 4.51 pounds per person per day. While this is a notable jump from decades earlier, much of the gain appears to be in the development of municipal yard waste composting programs. Although the benefits of recycling are abundantly clear, in today’s culture, according to a PEW Research Center report published in 2016, just under 30% of Americans live in communities where recycling is strongly encouraged. An EPA estimate for 2014 noted that the recycling rate that year was only 34.6%, nationwide, with the highest compliance rate at 89.5% for corrugated boxes.
Figure 3. Percent of Americans who report recycling and re-use behaviors in their communities, via Pew Research center
Historically, incineration – or burning solid waste – has been one method for disposing of waste. And in 2017, this was the fate of 34 million tons—or nearly 13%– of all municipal waste generated in the United States. Nearly a quarter of this waste consisted of containers and packaging—much of that made from plastic. The quantity of packaging materials in the combusted waste stream has jumped from only 150,000 tons in 1970 to 7.86 million tons in 2017. Plastic, in its many forms, made up 16.4% of all incinerated materials, according to the EPA’s estimates in 2017.
Figure 4: A breakdown of the 34.03 tons of municipal waste incinerated for energy in the US in 2017
What is driving the abundance of throw-away plastics in our waste stream?
Sadly, the answer is this: The oil and gas industry produces copious amounts of ethane, which is a byproduct of oil and gas extraction. Plastics are an “added value” component of the cycle of fossil fuel extraction. FracTracker has reported extensively on the controversial development of ethane “cracker” plants, which chemically change this extraction waste product into feedstock for the production of polypropylene plastic nuggets. These nuggets, or “nurdles,” are the building blocks for everything from fleece sportswear, to lumber, to packaging materials. The harmful impacts from plastics manufacturing on air and water quality, as well as on human and environmental health, are nothing short of stunning.
FracTracker has reported extensively on this issue. For further background reading, explore:
- A Formula for Disaster: Calculating Risk at the Ethane Cracker (2/8/2017)
- Understanding in Order to Prepare: Ethane Cracker Risk and Disclosure (5/3/2017)
- Piecing Together an Ethane Cracker: How fragmented approvals and infrastructure favor petrochemical development (5/31/2017)
- PTTGC’s Ethane Cracker Project: Risks of Bringing Plastic Manufacturing to Ohio (11/30/2018)
- Mapping the Petrochemical Build-Out Along the Ohio River (7/10/2019)
A report co-authored by FracTracker Alliance and the Center for Environmental Integrity in 2019 found that plastic production and incineration in 2019 contributed greenhouse gas emissions equivalent to that of 189 new 500-megawatt coal power plants. If plastic production and use grow as currently planned, by 2050, these emissions could rise to the equivalent to the emissions released by more than 615 coal-fired power plants.
Figure 5: Projected carbon dioxide equivalencies in plastics emissions, 2019-2050. Source: Plastic and Climate https://www.ciel.org/plasticandclimate/
Just another way of putting fossil fuels into our atmosphere
Incineration is now strongly critiqued as a dangerous solution to waste disposal as more synthetic and heavily processed materials derived from fossils fuels have entered the waste stream. Filters and other scrubbers that are designed to remove toxins and particulates from incineration smoke are anything but fail-safe. Furthermore, the fly-ash and bottom ash that are produced by incineration only concentrate hazardous compounds even further, posing additional conundrums for disposal.
Incineration as a means of waste disposal, in some states is considered a “renewable energy” source when electricity is generated as a by-product. Opponents of incineration and the so-called “waste-to-energy” process see it as a dangerous route for toxins to get into our lungs, and into the food stream. In fact, Energy Justice Network sees incineration as:
… the most expensive and polluting way to make energy or to manage waste. It produces the fewest jobs compared to reuse, recycling and composting the same materials. It is the dirtiest way to manage waste – far more polluting than landfills. It is also the dirtiest way to produce energy – far more polluting than coal burning.
Municipal waste incineration: bad environmentally, economically, ethically
Waste incineration has been one solution for disposing of trash for millennia. And now, aided by technology, and fueled by a crisis to dispose of ever-increasing trash our society generates, waste-to-energy (WTE) incineration facilities are a component in how we produce electricity.
But what is a common characteristic of the communities in which WTEs are sited? According to a 2019 report by the Tishman Environmental and Design Center at the New School, 79% of all municipal solid waste incinerators are located in communities of color and low-income communities. Incinerators are not only highly problematic environmentally and economically. They present direct and dire environmental justice threats.
Waste-to-Energy facilities in the US, existing and proposed
Click here to view this map full-screen
Activate the Layers List button to turn on Environmental Justice data on air pollutants and cancer occurrences across the United States. We have also included real-time air monitoring data in the interactive map because one of the health impacts of incineration includes respiratory illnesses. These air monitoring stations measure ambient particulate matter (PM 2.5) in the atmosphere, which can be a helpful metric.
What are the true costs of incineration?
These trash incinerators capture energy released from the process of burning materials, and turn it into electricity. But what are the costs? Proponents of incineration say it is a sensible way to reclaim or recovery energy that would otherwise be lost to landfill disposal. The US EIA also points out that burning waste reduces the volume of waste products by up to 87%.
The down-side of incineration of municipal waste, however, is proportionally much greater, with a panoply of health effects documented by the National Institutes for Health, and others.
Dioxins (shown in Figures 6-11) are some of the most dangerous byproducts of trash incineration. They make up a group of highly persistent organic pollutants that take a long time to degrade in the environment and are prone to bioaccumulation up the food chain.
Dioxins are known to cause cancer, disrupt the endocrine and immune systems, and lead to reproductive and developmental problems. Dioxins are some of the most dangerous compounds produced from incineration. Compared with the air pollution from coal-burning power plants, dioxin concentrations produced from incineration may be up to 28 times as high.
Figures 6-11: Dioxin chemical structures via US EPA. Source: https://www.epa.gov/dioxin/learn-about-dioxin
Federal EPA regulations between 2000 and 2005 resulted in the closure of nearly 200 high dioxin emitting plants. Currently, there are fewer than 100 waste-to-energy incinerators operating in the United States, all of which are required to operate with high-tech equipment that reduces dioxins to 1% of what used to be emitted. Nevertheless, even with these add-ons, incinerators still produce 28 times the amount of dioxin per BTU when compared with power plants that burn coal.
Even with pollution controls required of trash incinerators since 2005, compared with coal-burning energy generation, incineration still releases 6.4 times as much of the notoriously toxic pollutant mercury to produce the equivalent amount of energy.
Energy Justice Network, furthermore, notes that incineration is the most expensive means of managing waste… as well as making energy. This price tag includes high costs to build incinerators, as well as staff and maintain them — exceeding operation and maintenance costs of coal by a factor of 11, and nuclear by a factor of 4.2.
Figure 12. Costs of incineration per ton are nearly twice that of landfilling. Source: National Solid Waste Management Association 2005 Tip Fee Survey, p. 3.
Energy Justice Network and others have pointed out that the amount of energy recovered and/or saved from recycling or composting is up to five times that which would be provided through incineration.
Figure 13. Estimated power plant capital and operating costs. Source: Energy Justice Network
The myth that incineration is a form of “renewable energy”
Waste is a “renewable” resource only to the extent that humans will continue to generate waste. In general, the definition of “renewable” refers to non-fossil fuel based energy, such as wind, solar, geothermal, wind, hydropower, and biomass. Synthetic materials like plastics, derived from oil and gas, however, are not. Although not created from fossil fuels, biologically-derived products are not technically “renewable” either.
ZeroWasteEurope argues that:
Biogenic materials you find in the residual waste stream, such as food, paper, card and natural textiles, are derived from intensive agriculture – monoculture forests, cotton fields and other “green deserts”. The ecosystems from which these materials are derived could not survive in the absence of human intervention, and of energy inputs from fossil sources. It is, therefore, more than debatable whether such materials should be referred to as renewable.
Although incineration may reduce waste volumes by up to 90%, the resulting waste-products are problematic. “Fly-ash,” which is composed of the light-weight byproducts, may be reused in concrete and wallboard. “Bottom ash” however, the more coarse fraction of incineration—about 10% overall—concentrates toxins like heavy metals. Bottom-ash is disposed of in landfills or sometimes incorporated into structural fill and aggregate road-base material.
How common is the practice of using trash to fuel power plants?
Trash incineration accounts for a fraction of the power produced in the United States. According to the United States Energy Information Administration, just under 13% of electricity generated in the US comes from burning of municipal solid waste, in fewer than 65 waste-to-energy plants nation-wide. Nevertheless, operational waste-to-incineration plants are found throughout the United States, with a concentration east of the Mississippi.
According to EnergyJustice.net’s count of waste incinerators in the US and Canada, currently, there are:
- 88 operating
- 41 proposed
- 0 expanding
- 207 closed or defeated
Figure 14. Locations of waste incinerators that are already shut down. Source: EnergyJustice.net)
Precise numbers of these incinerators are difficult to ascertain, however. Recent estimates from the federal government put the number of current waste-to-energy facilities at slightly fewer: EPA currently says there are 75 of these incinerators in the United States. And in their database, updated July 2020, the United States Energy Information Administration (EIA), lists 63 power plants that are fueled by municipal solid waste. Of these 63 plants, 40—or 66%—are in the northeast United States.
Regardless, advocates of clean energy, waste reduction, and sustainability argue that trash incinerators, despite improvements in pollution reduction over earlier times and the potential for at least some electric generation, are the least effective option for waste disposal that exists. The trend towards plant closure across the United States would support that assertion.
Let’s take a look at the dirty details on WTE facilities in three states in the Northeastern US.
Review of WTE plants in New York, Pennsylvania, and New Jersey
A. New York State
In NYS, there are currently 11 waste-to-energy facilities that are operational, and two that are proposed. Here’s a look at some of them:
The largest waste-to-energy facility in New York State, Covanta Hempstead Company (Nassau County), was built in 1989. It is a 72 MW generating plant, and considered by Covanta to be the “cornerstone of the town’s integrated waste service plan.”
According to the Environmental Protection Agency’s ECHO database, this plant has no violations listed. Oddly enough, even after drawing public attention in 2009 about the risks associated with particulate fall-out from the plant, the facility has not been inspected in the past 5 years.
Other WTE facilities in New York State include the Wheelabrator plant located in Peekskill (51 MW), Covanta Energy of Niagara in Niagara Falls (32 MW), Convanta Onondaga in Jamesville (39 MW), Huntington Resource Recovery in Suffolk County (24.3 MW), and the Babylon Resource Recovery Facility also in Suffolk County (16.8 MW). Five additional plants scattered throughout the state in Oswego, Dutchess, Suffolk, Tioga, and Washington Counties, are smaller than 15 MW each. Of those, two closed and one proposal was defeated.
In Pennsylvania, six WTE facilities are currently operating. Two have been closed, and six defeated.
C. New Jersey
And in New Jersey, there are currently four operating WTE facilities. Essex County Resource Recovery Facility, is New Jersey’s largest WTE facility. It opened in 1990, houses three burners, and produces 93 MW total.
Union County Resource Recovery Facility, which opened in 1994, operates three burners, producing 73 MW total. Covanta Camden Energy Recovery Center opened in 1991. It has 13 burners, producing a total of 46 MW. Wheelabrator Gloucester LP (Westville, NJ) opened in 1990. The two burners there produce 21 MW of power. Covanta Warren Energy is the oldest and smallest WTE facility in New Jersey. It produced 14 MW of energy and opened in 1988. Operations are currently shut down, but this closure may not be permanent.
Throw-aways, burn-aways, take-aways
Looming large above the arguments about appropriate siting, environmental justice, financial gain, and energy prices, is a bigger question:
How can we continue to live on this planet at our current rates of consumption, and the resultant waste generation?
The issue here is not so much about the sources of our heat and electricity in the future, but rather “How MUST we change our habits now to ensure a future on a livable planet?”
Professor Paul Connett (emeritus, St. Lawrence University), is a specialist in the build-up of dioxins in food chains, and the problems, dangers, and alternatives to incineration. He is a vocal advocate for a “Zero Waste” approach to consumption, and suggests that every community embrace these principles as ways to guide a reduction of our waste footprint on the planet. The fewer resources that are used, the less waste is produced, mitigating the extensive costs brought on by our consumptive lifestyles. Waste-to-energy incineration facilities are just a symptom of our excessively consumptive society.
Dr. Connett suggests these simple but powerful methods to drastically reduce the amount of materials that we dispose — whether by incineration, landfill, or out the car window on a back-road, anywhere in the world:
- Source separation
- Door-to-door collection
- Building Reuse, Repair and Community centers
- Implementing waste reduction Initiatives
- Building Residual Separation and Research centers
- Better industrial design
- Economic incentives
- Interim landfill for non-recyclables and biological stabilization of other organic materials
Connett’s Zero Waste charge to industry is this: “If we can’t reuse, recycle, or compost it, industry shouldn’t be making it.” Reducing our waste reduces our energy footprint on the planet.
In a similar vein, FracTracker has written about the potential for managing waste through a circular economics model, which has been successfully implemented by the city of Freiburg, Germany. A circular economic model incorporates recycling, reuse, and repair to loop “waste” back into the system. A circular model focuses on designing products that last and can be repaired or re-introduced back into a natural ecosystem.
This is an important vision to embrace. Every day. Everywhere.
- “U.S. Municipal Solid Waste Incinerators: An Industry in Decline,” Tishman Environmental and Design Center at the New School. May, 2019. https://static1.squarespace.com/static/5d14dab43967cc000179f3d2/t/5d5c4bea0d59ad00012d220e/1566329840732/CR_GaiaReportFinal_05.21.pdf
- For more in-depth and informative background on plastic in the environment, please watch “The Story of Plastic” (https://www.storyofplastic.org/). The producers of the film encourage holding group discussions after the film so that audiences can actively think through action plans to reduce plastic use.
Figure 17: Illustration of common waste streams from “The Story of Plastic” (https://www.storyofplastic.org/)
By Karen Edelstein, Eastern Program Coordinator