4001 Veterans Memorial Highway
Ronkonkoma, NY, 11779 

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Reducing Landfill Waste

Located in Ronkonkoma, New York, the MacArthur Waste-to-Energy Facility is an award-winning Waste-to-Energy Facility. The Facility is owned by the Islip Resource Recovery Agency and serves the Town of Islip with reliable and sustainable waste management.

In addition to keeping waste out of landfills, we’re committed to ensuring safe operations and minimizing environmental impacts. We have been consistently recognized for exceptional operations, including OSHA’s stringent Voluntary Protection Program Star certification.

Fast Stats: Annual Performance

Every year, our facility processes more than 174,000 tons of waste that would otherwise have ended up in landfills.


Less waste in landfills reduce greenhouse gas emissions by 143,000 tons of CO2. That’s like taking 28,000 passenger vehicles off the road for one year.


We use waste to produce 12 megawatts of electricity 24/7 - enough to power 5,000 homes for a year.


We also recover 6,000 tons of metal for recycling annually - enough to build 5,000 cars.

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Superior Environmental Performance

We care about our communities and operate well below emissions limits. Over 99.9 percent of what comes out of our plant’s stack is what you’d typically find in air - water vapor, nitrogen, oxygen, and carbon dioxide. The remaining constituents are well below federal and state standards.

Covanta MacArthur Emissions Table 2022

For more information on facility performance click here.

Process in Action

Waste-to-Energy: How Does It Work?

Waste-to-Energy takes non-hazardous waste - otherwise destined for landfill - and combusts it to generate steam for electricity generation. Ash is processed to recover metal for recycling while all gases are collected, filtered and cleaned before being released safely into the atmosphere.

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