389 

 

ENERGY GENERATION & RECOVERY  

 

Indication of management commitment (e.g., standard operating procedures; board/executive 
management renewable energy conversion policy, including quantitative goals developed and 
shared with stakeholders)   

 

Internal energy sources evaluated (e.g., biogas, hydropower, heat in wastewater), and/or 
renewable energy sources evaluated on an ongoing basis (e.g., solar, wind, co-digestion)  

 

Recovery of digester gas in a combined heat and power (CHP) system, and boilers in place (for 
process and building heating)   

 

Conversion of digester biogas to electricity and heat, and/or transportation fuel Yes   

 

Solar panels, wind turbines, heat recovery, in conduit hydro, and/or hydroelectric power 
generation systems installed  

Newtown Creek and National Grid Partnerships: As part of a three year demonstration project, DEP has 
partnered with Waste Management to process organic food waste at our Newtown Creek plant, and is 
working with Manhattan College to conduct sampling and research on operational effects of the organic 
food slurry. DEP is also collaborating with National Grid in a parallel public-private partnership to purify 
and beneficially reuse the biogas generated at Newtown Creek. Wastewater infrastructure is 
increasingly feeding into resource recovery operations of the future, and DEP continues to gather the 
data that will inform the transition, including developing an organics cost model to determine 
appropriate tipping fees if the agency were to accept organic food waste more broadly across our plants 
in the future.  

Renewable Energy Studies: In 2016, DEP will launch an RFP to assess potential projects across the 
spectrum of renewable energy that could be sited in the city or our upstate watershed. Additionally, an 
RFI will be released in 2016 to assess the potential for innovative applications of solar PV systems at 
wastewater treatment campuses (over process tanks, on open land, on rooftops, etc.)  

Port Richmond Upgrades: In 2015, DEP completed a $30M upgrade to the Port Richmond facility that 
included activating one of the largest solar arrays in the City. The solar array generates ~ 1.02 
Megawatts hours annually and supplies up to 25 percent of the plant’s power needs. In addition, the 
upgrades have also allowed DEP to eliminate more than 28,000 metric tons of greenhouse gas emissions 
from our overall footprint by increasing the on-site beneficial use of biogas.  

Cogeneration / Codigestion Analysis: DEP is undertaking an analysis to assess opportunities for greater 
use of biogas across our fourteen wastewater treatment plants.  

Performance Measures & Results 

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Waste Management Project: DEP expects to process up to 250 tons of food waste at the 
Newtown Creek Wastewater Treatment Plant by 2019.  

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National Grid Gas to Grid Project: Anticipated use of biogas as part of this gas to grid project will 
reduce greenhouse gas emissions by 16,000 tons of CO2 annually.  

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GHG Emissions: DEP has reduced its greenhouse gas emissions by 29% since 2008, an effective 
reduction of over 40% versus a business-as-usual scenario.  

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Combined Heat and Power: A cogeneration system currently under construction at the North 
River Wastewater Treatment Plant is expected to reduce the Plant’s greenhouse gas emissions 
by up to 14,000 metric tons of CO2e.