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DTE Presentation

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  • 1. June 5, 2013EVS and Smart Grid IntegrationANA M MEDINADTE ENERGYEVS and Smart Grid IntegrationANA M MEDINADTE ENERGYWorkplace ChargingHawk Asgeirsson, P.E.Manager - Power Systems TechnologiesDTE Energyasgeirssonh@dteenergy.com
  • 2. DTE Energy is an Integrated Energy Company2
  • 3. DTE Energy –Electric & Gas Regulated Businesses• Tenth largest US electricutility• 7,600 square mile service• 2.1 million customers• $4.9 billion in revenue• Gen Capacity: 11,084 MW• Annual Sales: 50,000 GWHDTE Electric• Eleventh largest US naturalgas utility• 14,700 square mile serviceterritory throughoutMichigan• 1.2 million customers• 679 bcf of gas sales• $1.8 billion in revenueDTE Gas3
  • 4. DTE Residential Program442%58%FlatCharging Behavior(Avg. % Usage during Off-Peak per customer)Off Peak On Peak85%15%TOUCharging Behavior(Avg. % Usage during Off-Peak percustomer)Off Peak On PeakPEV RATE OPTION #1Time of Use (TOU)PEV RATE OPTION #2Flat Monthly Bill $40Average Flat Rate Bill =$41.60Average TOU Bill = $30.Incentive: Up to $2,500 to 2,500 Detroit Edison customers for EVSE & installation.Two separately metered PEV rates offered – Flat Rate and Time-of-Use(on-peak 9 AM to 11 PM M-F)EV Rate (D1.9)1Option1On-Peak 18 cents/kWhOff-Peak 7.7cents/kWhOption2Monthly Flat Bill: $40Limited first 250 customersRequires a 240 V separate metercircuit
  • 5. Workplace/Public InstallationsDOE Workplace Challenge Partner Installed/facilitated 78 public/workplacecharging station in SE Michigan 54 at DTE Energy facilities 34 are publicly available Internal education5
  • 6. Workplace/Public Installations Installation cost Level 2 – 240 volt $2,500 - $15,000 Installation cost Level 1 – 120 volt $0 - $1,000 What does it cost to charge Average charge 4.5 kWh ~ 50 cents INL public charging data 8.4 kWh/week day ~ $1 per day (12 cents/kWh) 15 DTE Energy employees own or leasea PEV6
  • 7. Workplace Charging Challenges Education and best practices for workplacecharging Installation options – Level 1 or Level 2 Internal employee users group Who pays? DOE EV Everywhere Workplace Challenge calstart.org evworkplace.org goelectricdrive.com7
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  • 10. 10Questions?
  • 11. Date: July 17 TuesdayDay High Temp Low TempAvg. Temp17 102 76 89Distribution Circuit Load GraphSummer 2012 high temperature day
  • 12. Weekday Charging ProfileComparison of TOU and Flat Rate1200.10.20.30.40.50.60.70.80.90…1234567891011121314151617181920212223AveragekWHourAverage of Flat-rate kWhAvgAverage of TOD kWh AvgShaded = On-Peak
  • 13. INL EV Project Data13