Metropolitan Council Environmental Services A Clean Water Agency
Presented to the Environment Committee January 27, 2009 Energy
Program Update Jason Willett, Chair, MCES Energy Team Slide 2
Background: 2006 Energy team created by MCES General Manager Bill
Moore Goal: 15 percent energy reduction of purchased fossil fuel
(2010 compared to 2006) Slide 3 Status of Initiatives 1.Energy
Conservation 2.Renewable Energy 3.Energy and Carbon Measurement
4.Energy Cost Savings and Financial Issues 5.Energy Collaborations
Slide 4 1. Energy Conservation The cheapest energy is the energy
you dont use. Slide 5 Energy Conservation and Efficiency Overview
Process efficiency, lighting redesign, and facility
re-commissioning Completed 26 energy-related studies identifying:
40 energy saving opportunities totaling 46 million kWh ($3
million/year); of those, MCES implemented 16 measures to date = 23
million kWh ($1.4 million/year) 24 more studies planned in 2009
Slide 6 Energy Conservation and Efficiency Completed work Metro:
Aeration study Annual kWh savings = 6,700,000 Metro: Enhanced
maintenance in aeration process Annual kWh savings = 4,000,000
Slide 7 Energy Conservation and Efficiency Completed work Metro:
Odor control energy improvement Annual kWh savings = 688,000 Metro:
Instrument air compressor modifications Annual kWh savings =
340,000 Slide 8 Energy Conservation and Efficiency Completed work
Blue Lake: Refurbished secondary aeration system Annual kWh savings
= 3,000,000 Seneca: Refurbished secondary aeration system kWh
savings = 899,000 Facility re-commissioning on eight facilities
Annual kWh savings = 250,000 Slide 9 Energy Conservation and
Efficiency In process work Metro: Tunnel lighting redesign 2008
design; 2009 construction Slide 10 Energy Conservation and
Efficiency In process work Metro Liquids Business Unit Operating
Changes 50 percent reduction sludge pump run hours 8,000 annual
hour reduction in grit collector drives Less double pumping of
sludge Annual kWh savings = 3,000,000 Metro: Steam Trap Program 15%
completed in 2008; remainder scheduled for 2009 Slide 11 Energy
Conservation and Efficiency In process work Rosemount:
Decommissioning Annual kWh savings = 1,500,000 (net) Rosemount
Plant, 2008 Slide 12 Energy Conservation and Efficiency In process
work Energy design standards for capital projects Employee energy
campaign 1,800 computers reconfigured to go into low energy state
after inactivity Printer default is two-sided copies Employees to
shut down computers and electronics when not in use Slide 13 Energy
Conservation and Efficiency Identified additional energy efficient
improvements Seneca: New energy efficient HVAC system Blue Lake:
New energy efficient HVAC system Lift Station L-35: Energy
efficient lighting Lift Stations L-74, L-75: Efficient motors Slide
14 2. Renewable Energy Renewable energy can make us
energy-independent and energy-secure. Slide 15 R&D and
Renewable Energy Completed RE Fluidized Bed Incinerators/
cogeneration of heat and electricity Slide 16 R&D and Renewable
Energy Completed RE Eagles Point: Thermal energy recovery from
effluent Slide 17 R&D and Renewable Energy In process RE
Empire: Micro- turbine demo project Slide 18 R&D and Renewable
Energy In process RE Blue Lake: Design of liquids process change to
anerobic digestion and substitution of produced biogas for
purchased natural gas Metro: Heat Pump 2008: Study on energy
savings opportunities from heat pump and heat recovery technologies
2009: Initiating installation of non-condensing turbine/generator
Seneca: New scrubber heat exchanger Slide 19 R&D and Renewable
Energy Identified RE possibilities Algae R&D Bio-diesel from
brown grease Slide 20 R&D and Renewable Energy Identified RE
possibilities Metropolitan Counties Energy Coalition (MCEC) Wind
Initiative Xcel Energy and MCES Renewable Collaboration, possible
solar farm at Blue Lake Slide 21 3. Energy and Carbon Measurement
You cant manage what you cant measure. Slide 22 Energy and Carbon
Management In process work Energy database EPA and Energy Star
Program GHG Emissions Research The Climate Registry (TCR) reporting
Slide 23 4. Energy Cost Savings and Financial Issues MCES spent $17
million on energy in 2008. Slide 24 Energy Cost Savings and
Financial Issues Completed work Carbon costing for alternatives
analysis Solar facilities economic analysis Rebates earned in 2008:
$225,000 Peak Control Agreement savings in 2008 $350,000 Slide 25
Energy Cost Savings and Financial Issues In process work Lift
station tariff analysis and charges Xcel Energy rate case
Monetization of emission reduction projects FBI turbine
accreditation and penalties Peak Control Agreementsreview Slide 26
5. Energy Collaborations Slide 27 Energy Collaborations University
of Minnesota (Institute for Renewable Energy & Environment)
Xcel Energy (Process Efficiency Program & RE) Metro Energy
Policy Coalition (Counties) Inter-agency Energy & Environment
Team Chamber of Commerce Slide 28 Summary Conservation: 66% of goal
complete Over 100% of opportunities identified More studies
underway Renewable energy: Additional possibilities being
investigated Financial impact: $1.4 million/year conserved.3
rebates received (2008).3 peak control savings (2008) $2.0
million
