Using a Whole Building Approach to Energy Efficiency Tom Fenimore South Carolina Society of Hospital Engineers May 10, 2012
Energy Efficiency The cheapest watt to produce is the one we don t have to generate.
Assessments Audits Opt-out Opt-in Rebates Incentives Prescriptive Free-riders Performance Contracts Custom Retro-commissioning 179(d) EMS DDC VAV Demand control M&V SmartGrid Energy credits BAS
$15 Million SmartBuilding Advantage
Why Energy Efficiency? 1. Right thing to do 2. Cost avoidance 3. Regulatory offering 4. Smart$aver program Designed to motivate and drive EE beyond what would normally occur.
Build new, more efficient generation and retire older, coal-fired units Make energy efficiency the fifth fuel Modernize our grid by replacing less efficient analog technology with advanced digital technology CLIFFSIDE PLANT CONSTRUCTION WATER HEATER BLANKET INTELLIGENT SWITCH
Energy Efficiency as the Fifth Fuel Coal, Natural Gas, Nuclear, Renewables and Efficiency Decarbonize our power generation Provides needed capacity Affordable and reliable Helps make our communities more efficient
Two Types of Incentives 1. Prescriptive Incentives Have a known impact on efficiency Apply for incentive after equipment is purchased 2. Custom Incentives Custom effect to a specific building Apply for incentive before equipment is purchased
Prescriptive incentive examples: Majority of indoor lighting VFDs Pumps Motors Chillers Some rooftop/packaged units Food service equipment
Custom incentive examples: HVAC/Space conditioning Controls/re-commissioning BAS/EMS Optimization/economizers Demand control/scheduling Envelope changes Outdoor/parking deck lighting
Prescriptive 2011 Non-Residential Impact Smart$aver Prescriptive Impact State Total kwh Total Incentives NC 55,409,587 $4,642,835 SC 20,737,176 $1,277,474 Total 76,146,763 $4,920,308
2011 Non-Residential Smart$aver Prescriptive Technologies Technology NC kwh SC kwh Food Service 736,090 275,483 HVAC 3,626,079 1,357,069 Lighting 46,612,026 17,444,667 Motors/Pumps/VFD 4,069,075 1,522,862 Process Equipment 366,316 137,095 Total 55,409,587 20,737,176
Custom Impact SmartBuilding Advantage 2011 Non-Residential Smart$aver Custom Impacts State Total kwh Total Incentives NC 42,744,783 $2,749,214 SC 15,998,892 $842,178 Total 58,743,675 $3,591,392
Duke SmartBuilding Advantage Case Studies Project Project #1 Project #2 Project #3 Project #4 Project #5 Total Costs $73,200 $161,500 $256,000 $570,694 $1.59M Total Savings $39,590 $46,500 $71,500 $203,376 $393,500 Incentives $28,000 $40,000 $70,000 $188,375 $228,000 Payback 1.14 yrs 2.61 yrs 2.60 yrs 1.9 yrs 3.5 yrs Average reduction in electrical energy spend is over 28%
Case Study Presbyterian Hospital Matthews, NC
The Situation at PHM 114-bed primary care facility Built in 1993 with various additions 294,000 sq ft facility Duke Energy conducted ASHRAE level 3 assessment at facility to evaluate 10-AHUs, 500-VAV boxes, hot water reheat, chiller plant, boiler plant.
The Findings at PHM Based on national comparison, it was determined that PHM was using 71% more electricity and 89% more natural gas than other hospitals. Many areas within hospital were conditioned 24/7. Energy cost was 35% higher than normal.
The Plan at PHM 1. Remove all pneumatics with new DDC control 2. Integrate entire building into BAS 3. Implement demand control 4. Install variable control wherever possible
The Results at PHM $1.6M project $393,000 annual savings Now operating at $1.34/sq ft Received $228,000 incentive from Duke Energy Project payback less than 3.5 years 36.8% reduction in electric consumption
Why invest in efficiency? Reduce energy costs Offset energy rate increases Offset potential future rate increases Make building more marketable and valuable ENERGYSTAR /LEED certification Potential tax benefits Higher awareness of EE Satisfy energy mandates Satisfy client mandates Receive incentives to push efficiency
Why use Duke Energy or other Utility? 1. We are not an ESCO or operate performance contracts. You keep all savings. 2. We do not sell equipment. 3. We are mandated to be both vendor and equipment neutral. 4. We are experts in efficiency. 5. We share costs of process. 6. We are highly motivated to help our customers save money on electricity through efficiency.
Strategic Partnering Performance Verification Interval Metering & Energy Usage Data Implementation Phase SmartBuilding Advantage Initial Onsite Assessment Smart $aver Incentive Determination Energy Conservation Measure Scope Investment Grade Assessment
Duke Energy Energy Efficiency contacts Bill Flye (704) 936-9545 bill.flye@duke-energy.com John McKenzie (704) 641-5857 john.mckenzie@duke-energy.com
QUESTIONS??? SmartBuilding Advantage