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Using “waste heat” as renewable energy, MMSD captures heat off the engine generators at the South 
Shore facility and use it to heat anaerobic digestion. At the Jones Island facility, heat is also captured 
from the generators and used to pre-heat the Milorganite® dryers.  

In 2010, MMSD’s Commission adopted the 2035 Vision and Strategic Objectives that include ambitious 
goals related to energy and efficiency renewable energy: meet a net 100% of MMSD’s energy needs 
with renewable energy sources; meet 80% of MMSD’s energy needs with internal renewable sources; 
use the Greenseams® Program to provide for 30% sequestration of MMSD’s carbon footprint; and 
reduce MMSD’s carbon footprint by 90% from its 2005 baseline. 

To increase the quantity of methane gas produced as a by-product in the anaerobic digesters at the 
South Shore facility, MMSD is working to attract additional sources of high strength waste to boost its 
production in order to generate all electricity from biogas. Electricity generated from methane capture 
and reuse YTD has provided 71% of South Shore’s electricity requirements. 

Through an innovative project, MMSD is using methane gas, waste gas from a local landfill, to generate 
electricity for its Jones Island Water Reclamation Facility. Methane gas is piped 19 miles from Emerald 
Park Landfill to the Jones Island Water Reclamation Facility (JIWRF) where it is converted to electricity in 
three Solar Turbines with a typical output of 4 – 5 MW.  

An additional contract for sourcing landfill gas has been secured to provide a secondary source of 
methane gas to augment the Emerald Park contract in order to increase amount of electricity produced 
using biogas at the JIWRF. The turbines have the capacity to power all operations at JIWRF when 
adequate supply can be delivered. 

MMSD’s use of solar energy includes a 20 kW installation at Jones Island, a 15 kW installation at 
Headquarters, on this building, and solar hot water at the lab. A real-time performance dashboard is 
displayed in the lobby.   

MMSD contracted with Pirnie/ARCADIS to conduct a study concerning Sewer Thermal Energy Recovery. 
Five technologies were assessed by their physical requirements, need/opportunity for pre-treatment, 
cost, and  

Reliability. GIS was used to identify high candidate locations by sewer-shed and land use criteria. A Triple 
Bottom Line Technology Comparison Tool was used to evaluate the five selected technologies. 

The Headquarters and Lab Heat & Power Generation System project began in January 2016 with 
preliminary engineering. The scope of the project is to implement a Combined Heat and Power 
Generation System at MMSD headquarters and Laboratory buildings that will self-generate electrical 
power while utilizing the waste heat recovered for heating and possibly cooling and producing 
essentially near-zero GHG emissions. 

Performance Measures & Results 

Data for 2015 

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% Electricity Generated at JIWRF: 90% 

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% Electricity Generated by LFG at JIWFR: 26% 

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% Run Time of the Solar Turbines JIWRF: 74%