280 

 

 

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”)   

 

Energy management-related training provided to plant staff 

 

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

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Energy efficiency evaluated for all equipment purchases and capital projects  

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Conduct and or participate in research activities  

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Sub-metering conducted for critical process units  

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Participation in voluntary energy efficiency programs (e.g., Energy Star)  

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Utilization of energy conserving equipment wherever possible (e.g., utilization of peak shaving 
equipment to reduce usage)  

Performance Measures & Results  

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Reduce net overall electrical usage by at least 5% over the 6-year planning period: On track; 
Completed several energy-saving projects, reducing electrical usage an average of 3.6% in 2015  

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Energy optimization analysis for plant processes Met; Puget Sound Energy, Inc. (PSE) and 
Cascade Energy completed analysis with recommendations for energy savings through PSE 
Industrial System Optimization Program (ISOP) Met; partnered with Oregon State University for 
site-specific Energy Efficiency Assessment report 

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Establish staff-led energy team to oversee goals and implementation Met; Kill-a-Watt team 
meets twice monthly to evaluate energy savings Ongoing; staff competition and incentive 
program to identify more energy saving practices Implement power saving recommendations 
Met; Installation of Nest pre-set thermostats in individual offices; posters and equipment tags to 
encourage power savings; installation of light emitting diode (LED) lighting where possible; and 
programming power-saving modes on plant computers Met; First anoxic mixers automatically 
shut off after two hours of run time each day; gas mixers now off for 33% of the day Ongoing; 
multiple small changes in equipment operations  

 

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  

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Co-generation systems  

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Heat recovery systems  

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Mandate sustainable design practices