316 

 

ENERGY EFFICIENCY  

 

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

 

Energy audit/benchmarking conducted to identify priorities for energy efficiency improvements  

 

‘Energy teams’ established and individuals empowered within the utility for energy efficiency 
activities (e.g., an “energy advocate” or “energy champion”)   

 

Utilization of energy conserving operational methods (e.g., optimization of primary 
sedimentation to reduce utilization of pure oxygen) 

-

 

Developing technology to expand aeration tank capacity without increasing aeration  

-

 

Participation in voluntary energy efficiency programs  

-

 

Investigating energy efficient biosolids dewatering processes  

Performance Measures & Results  

-

 

Progress towards Energy Neutrality by 2023:  27% as of 2016  

-

 

Annual electricity use reduction from membrane-aerated biofilm reactor (MABR) technology:  
11,000,000 kWh, projected after full-scale application   

-

 

Annual revenue from electricity curtailment program: $1.9 million   

-

 

Annual electricity use reduction from improving biosolids dewatering processes (Volute 
Dewatering Press) Initial testing completed; projected savings: 93% reduction in electricity 
usage.  

-

 

Large–scale testing projected in 2017.  

-

 

Status of energy reduction plan: Completed energy audit; recommendations being implemented 
by energy efficiency team at Calumet WRP: upgrade interior lighting and HVAC controls, install 
steam blankets, and replace boilers.   

-

 

Annual savings from building energy conservation measures:  $800,000 projected   

-

 

Annual electricity use reduction from deammonification process: 2,000,000 kWh projected from 
use of ANITAMox vs. current operation for ammonia treatment at Egan WRP. Process currently 
being commissioned.  

  

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)  

 

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  

Use of supplemental organic wastes to maximize production of biogas  

  

Performance Measures & Results