Colorado Springs Utilities Drew A. Rankin, General Manager Energy Supply

Agenda Where We Have Been Our History - Citizen-Owned Utility Where We Are Achieving a Critical Balance Looking Ahead A Vision for Tomorrow Pilot Scrubber Project

Where We’ve Been 1905: Manitou - Hydro 1925: Drake - Coal 1980: Nixon Coal 1953: Birdsall – Oil/natural gas1925: Ruxton - Hydro : Citizens vote for municipal utility

Where We’ve Been 1997: Tesla Hydro 2003: Front Range – Natural Gas 1989: Begin WAPA Hydro 2010: Cascade Hydro : Manitou Hydro Expansion 2011: USAFA Solar

Current Electric Power Sources CapacityEnergy Output Total: 1,095 MW summerRecord peak: 863 MW August 2007

Doing the Right Thing Demonstrate Corporate Responsibility Relationships Community Commitment Customer Service Communication Environmental Stewardship Plan and Execute for the Future Reliability Safety Reliability and Quality Regulatory Maintain Financial Stability Rates Bond Ratings Fixed Cost Coverage Days of Cash Debt Ratio Customer Cost/Value Critical Balance

Customer Satisfaction Drivers JD Power & Associates, Residential

Looking Forward – Our Questions What is our unique fingerprint as a community with respect to the environment? How do we bring together all the diverse stakeholder views and draw out the best ideas in service of a common goal? What does success look like for Colorado Springs with electric energy in 2020? Given the challenges we are facing, what portfolio mix best positions us for that success?

A Vision for Tomorrow A Starting Place Draft Vision: By 2020, Colorado Springs Utilities will provide 20% of its total electric energy through renewable sources, reduce average customer use by 10% and maintain a 20% regional cost advantage.

A Vision for Tomorrow Renewable Facilities Hydroelectric Manitou Ruxton Tesla WAPA Cascade Total local generation (35.4 MW) WAPA (121 MW) Solar Customer Rebates* Net metering Air Force Academy (5.2 MW) Woody Biomass – 2012 (20 MW) 20 MW * , 119 projects, 661 kW

A Vision for Tomorrow 20% Renewables Potential Sludge to Energy Concentrated Solar Geothermal Municipal Waste High-Tech Wind Solar

A Vision for Tomorrow Energy Reduction– Reduce Customer Use by 10% Price options Incentives and rebates Smart Grid applications Demand response Regulatory Appliance standards Building codes Load control New technologies Annual residential use per customer in Kwh

A Vision for Tomorrow Existing Cost Advantage PSCoMountain ViewBlack Hills Energy Colorado Springs Utilities June 2010 Monthly Power Cost – Residential kWh Currently 21% lower than average of the other three electric utilities

A Vision for Tomorrow Conclusions Colorado Springs Utilities has offered value to citizens for over 85 years: Local ownership Reliable electricity Competitive cost Compliance and beyond with environmental standards We have a unique opportunity to address the energy challenges ahead in a way that positions our community to thrive We must maintain the critical balance.

A Vision for Tomorrow Conclusions A diverse portfolio continues to offer the best blueprint for tomorrow An energy vision can bring us together and be a rallying point for future success Collaboration and innovation are key to meeting the challenges of tomorrow We must move forward together as a community, region, and industry to build the future now

Pilot Scrubber Project Using a Public-Private Partnership Design, Test, and Implement a Solution to Present and Future Power Generation Technology Emission Challenges in Maintaining Low Cost, Reliable, and Higher Quality Environmental Performance.

Serendipity – DOD Meets CSU Neumann Systems Group Colorado Springs Based DOD Research and Development Contractor NeuStream NSG Subsidiary to Help Solve Emission Challenge Cross Application of Proprietary Technology CSU Presentation and Assessment “Too Good To Be True” Lab Test and Proposition Engage Slip Stream Testing Three (3) Phases – 0.13 MWe – 2.0 MWe – 20 MWe

NeuStream TM Modular Architecture 2 MW Scrubber60 MW System 20.7 FT 28 FT 18 FT PUMP HOUSE WATER TREATMENT SYSTEM SORBENT STORAGE TANK SORBENT FEED PLENUM HEX FLUE GAS FLOW SORBENT FLOW 121 in 40 in FLUE GAS IN CLEAN FLUE GAS OUT TOP JET PACK ZONE 56 in FRONT FLUE GAS FLOW 15 in DEMISTER SIDE FLUE GAS FLOW 2 MW Scrubber x 10 x 3 DEMISTER SORBENT SPRAY Half the Size – Half the Cost – Superior Performance

30% Design Study Results Operational Performance Financial Performance

Current Status and Next Steps Continuing 20 MW Pilot Stress Testing >90% Removal 97% Availability Draft EPC Contract Drake 6 and Drake 7 97% Removal Design EPRI Independent Assessment Report – November 1 Execute EPC Contract Continue Testing for NOx and CO2 Market Development Fundamentally Improve Emissions