Pilot Study for Plug-In Hybrids Sustainability/Energy Committee January 26, 2016
Overview Plug-in Electric Vehicle (EV) Pilot Project Employee Access to Charging Stations Next steps
Purpose of Pilot Study Maximize Fleet fuel efficiency Reduce GHG emissions Evaluate plug-in EV to supplement or replace hybrid sedans
Overview of Pilot Study Began in June 2013 Purchased 2 Chevy Volts 2013 Volts operate on electricity first Rating: 38 miles Pilot: 30 miles Volt automatically switches to gas
Pilot Vehicle Assignments Assignments MWWTP pool Assigned to 3 different staff for 1 month durations then to Water Conservation staff EV charging stations installed at MWWTP Administration Building Adeline Maintenance Center
Pilot Results MWWTP Used for short trips, routinely charged 77% of miles driven on electricity Total miles driven 2,347 90 MPG equivalent Individuals/Water Conservation Used for longer trips, routinely charged 51% of miles driven on electricity Total miles driven 4,835 62 MPG equivalent
Pilot Results Volt fuel efficiency exceeded Prius Volts: 62 to 90 MPG Prius: 45 MPG If average use between charges is less than 40 miles, life-cycle costs are similar 2015 Chevy Volt rated for 53 miles
Employee Access to Charging Stations EV charging stations MWWTP Administration Building Adeline Maintenance Center 4 hours to charge Chevy Volt EV vs DC chargers (i.e., for Volt vs Tesla) Cost to add a station Material Cost: $2000 to $7,000 Installation: $15,000
Department of Energy Survey Benefits Attracts and retains employees Encourages employees to purchase electric vehicles Supports District s sustainability value 80% of employers do not charge for access to charging stations 20% of employers charge fixed fee or cost of power used
Department of Energy Survey Issues with offering employee access: Allocating charge station time: company vs personal vehicles Prioritizing and managing use Administrative costs for tracking personal vehicles Liability for damage to personal vehicles Time for employees to move vehicles Installing and managing system for employees to pay for power consumed
Employee Access to Charging Stations District Challenges Installation cost high Chargers will be shared between District and personal vehicles Employee charging only available from 8 a.m. to 4 p.m.
Next Steps Replace 4 Priuses with plug-in EV in FY17 Evaluate costs for allowing employee access to charging stations including power, administration, liability and logistics
Photovoltaic Update January 26, 2016 Sustainability/Energy Committee
Overview Net Energy Metering Tariff Adeline Maintenance Center PV projects Current PV projects
Net Energy Metering NEM Net generation against consumption on site Exported generation credited at retail rates Provides the best economic payback NEM-Aggregate Single generation project can apply credit to several accounts on the same, adjacent or contiguous properties 3
Changes in NEM Tariffs Current NEM or NEM-A tariffs available until July 2017 or NEM cap - 5% of utility peak load, est. July 2016 CPUC proposed replacement NEM Continue with retail energy credits Fee on exported energy No cap on NEM CPUC to revisit NEM in 2019
Adeline Maintenance Center PV Maximum PV Size AMC building 500 kw AMC shops 300 kw Fleet building 200 kw 5
Existing Electrical Capacity Insufficient electrical capacity to support max sized PV project Site Location Maximum PV Size Electrical Capacity AMC building 500 kw 150 kw Shops 300 kw 270 kw Fleet 200kW 150 kw Totals 1000 kw 570 kw 6
Maximize PV Project Size Determine electrical improvement and costs PV costs and benefits Maximum PV in Compliance with Energy Policy 7
Maximize PV Project Size Apply NEM-A tariff to oversized PV projects Site Location Maximum PV Project Size Estimated Annual PV production Annual Onsite Load Estimated Excess PV Production Admin 500 kw 850,000 kwh 750,000 kwh 100,000 kwh Shops 300 kw 500,000 kwh 670,000 kwh - Fleet 200 kw 350,000 kwh 250,000 kwh 100,000 kwh 8
NEM-A Apply any excess PV generation to other accounts PV projects offset no more then than 100% of AMC total annual electric load NEM-A Benefiting Accounts AMC Electric Accounts Annual electric Load Fueling A 102,000 kwh Fueling B 10,000 kwh Street Light 500 kwh 9
AMC PV Next Steps Study electrical upgrades at AMC Dec 2016 Issue RFP (2 size options) Feb 2017 Negotiate PPA or Direct Purchase Agreements Construct electrical upgrades and PV projects May 2017 Dec 2017 10
Existing PV PPA Status Executed PPAs with SunEdison Camanche Dam 230 kw North Richmond WRP 230 kw SunEdison letter, January 18, 2016 Request to increase PPA pricing PPA does not allow pricing changes Necessary for securing financing PPA allows termination if financing is unavailable 11
PV Projects Next Steps Reject SunEdison price adjustment Terminate PPA Begin discussions with SolarCity PPA Agreements Board approval 12
QUESTIONS? 13
In-Conduit Hydroelectric Update January 26, 2016 Sustainability/Energy Committee
Overview What is In-conduit hydro Briones In-Conduit Hydro Project Portland In-Conduit Hydro Project
In-Conduit Hydroelectric Smaller scaled hydroelectric generators Turbines Pump as turbines Uses existing water flows Uses existing infrastructure Tunnels, canals and pipelines
Briones In-Conduit Hydro Capture energy from water released from Briones Reservoir to Orinda Water Treatment Plant Energy currently dissipated through valves
Project Schematic BRIONES RESERVOIR ~230 feet Briones Draft/ Energy Dissipation Valve Briones PP LAFAYETTE AQUEDUCT NO. 2 ORINDA WTP LAFAYETTE AQUEDUCT NO. 1
Project Schematic BRIONES RESERVOIR ~230 feet Briones Draft/ Energy Dissipation Valve Briones In-Conduit Hydro Briones PP LAFAYETTE AQUEDUCT NO. 2 ORINDA WTP LAFAYETTE AQUEDUCT NO. 1
Project Economics RFP issued December 2013 Water Works Engineers Three 200 kw pump as turbines Project cost $2 million Electrical mechanical upgrades $2 million Net Present Value -$300 K Not compliant with District s Energy Policy
Briones Center Upgrades Raw Water Master Plan (RWMP) Briones Center upgrades to improve the facilities long term reliability Electrical/mechanical upgrades support inconduit hydro In-Conduit Project With WRMP upgrades provides a positive net present value Meets Energy Policy requirements
In-Conduit hydro Next Steps Request funds for FY 18-19 capital budget Incorporate in-conduit hydro design in upgrades Proceed if consistent with Energy Policy
Portland In-Conduit hydro Project Constructed in 2013 Rehab of a pressure reducing station Four 50 kw Lucid inline turbines 1,100 MWh/year
Financials 20-year sales agreement with Portland General Electric Average price $0.09/kWh Revenue Third party investor, financer of project Portland Water Bureau, use of water system Lucid Technology, maintenance
Portland In-conduit Project
In-Conduit Challenges at EBMUD Available water pressure Intermittent flows at facilities Locations with on site electric load
QUESTIONS? 14