Quantifying Value of V2G October 24, 2018 EPRI IWC Eric Cutter, - - PowerPoint PPT Presentation

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Quantifying Value of V2G October 24, 2018 EPRI IWC Eric Cutter, - - PowerPoint PPT Presentation

Dec 13, 2022 472 likes •653 views

Quantifying Value of V2G October 24, 2018 EPRI IWC Eric Cutter, Director eric@ethree.com Distribution Aware V2G Demonstration CEC funded project led by EPRI running since 2015 Nuvve EVSA Collaboration Technical Advisory EPRI Honda

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SLIDE 1

Quantifying Value of V2G

October 24, 2018 EPRI IWC Eric Cutter, Director eric@ethree.com

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SLIDE 2

Distribution Aware V2G Demonstration

CEC funded project led by EPRI running since 2015 Project Objectives

  • Develop and implement end to end V2G communications system
  • Implement dynamic V2G management use cases
  • Data collection and performance analysis
  • Assess costs/benefits – customer and utility perspectives

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EPRI

Technical Advisory Committee Nuvve EVSA Collaboration

Honda University Of Delaware

Kitu Systems FCA Honda Clean Fuel Connection EPRI Technical Team AeroVironment Energy & Environment Economics (E3)

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SLIDE 3

System Architecture

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SLIDE 4

A randomized driving pattern from National Household Travel Survey data Modeled 5 Chevrolet Bolts commuting to UC San Diego

  • 60 kWh battery / 238 mile range

V2G capable L2 Charging (6.6kW) available at work and home No hardware costs included in this analysis

Modeling EV Driving and Charging Behavior

4 https://www.autoblog.com/buy/2018-Chevrolet-Bolt+EV/ Randomly Generated driving pattern Statistics EV 1

Hours at Home 6,105 Hours at Work 1,981 Driving Energy (kWh) 3,324 Mean commute (hrs) 0.39 Mean time at work (hrs) 8.93

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SLIDE 5

V2G Dispatch Modes

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Ratepayer bill (customer dispatch)

  • Bill Savings
  • Back-up power
  • Ancillary Service Revenue

Grid costs (utility dispatch)

  • System Avoided Costs
  • Distribution Deferral Value
  • Ancillary Service Revenue

Co-optimized dispatch to maximize benefits Perfect foresight, price-taker Constrain cycling and SOC for battery health

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SLIDE 6

Base Case – 2018 CPUC Avoided Costs with current (low) resource adequacy prices High Case – high renewables (80% GHG reduction by 2030) with high local resource adequacy and distribution deferral value

Methodology – Use Cases

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Smart Charging (V1G) V2G

Base Case V1G Base Case V2G Base Case + Dist. Deferral + Dist. Deferral + AS High Case V1G High Case V2G High Case + Dist. Deferral + Dist. Deferral + AS + Unconstrained Operation

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SLIDE 7

Base Case V2G Benefit Results

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Charging Cost Grid Benefits Un- managed Smart (V1G) V2G V2G w/AS

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SLIDE 8

Incremental Benefits of V2G

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EPRI led CEC EPIC “Distribution Aware V2G Demonstration Project”

Incremental grid benefits of V2G (without AS)

Un- managed Smart (V1G) V2G $154 $338 Charging Cost Grid Benefits V2G v. Smart Smart v. Unmannaged

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SLIDE 9

V2G Dispatch – Distribution Deferral

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Un- managed Smart (V1G) V2G

V1G: the PEVs must be charging to provide benefits and they cannot provide services

  • nce the battery is

full. V2G: the ability capacity for grid services is doubled, the dispatch can be precisely timed to coincide with peak loads and the battery can be used for grid services even after the battery is full.

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SLIDE 10

V2G Dispatch - Overgeneration

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Smart (V1G) V2G

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Key Insights / Conclusions

V2G shows significant net benefit relative to V1G

  • Short commutes and high SOC can limit value of managed
  • ne way charging
  • Capacity value can be high in constrained areas
  • Ancillary services are not necessarily dominant value

Next Steps

  • More diverse vehicles and driving behavior
  • Model reliable response of aggregated fleet
  • Electric Vehicle Storage Accelerator (EVSA) Project at UC

San Diego with Nuvve

  • CPUC/CEC VGI Roadmap

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SLIDE 12

THANK YOU

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SLIDE 13

EV Grid Model

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Grid Demand for Frequency Regulation and Load Following

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$0 $20 $40 $60 $80 $100 $120 200 400 600 800

2015 $/kW-Yr.

$0 $10 $20 $30 $40 $50 200 400 600 800

2015 $/kW-Yr.

High Renewables Low Renewables

Frequency Regulation Load Following

MW

Frequency Regulation market is fully saturated at 600 MW Larger market for load following at higher prices E3 & LBNL modeling for CPUC Advanced DR Potential Study

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SLIDE 15

Load Shift Will Be Larger Market

2025 Market Value

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MW per Day

MWh per day

600 120 6,000 1,200 12,000

$16

$225

Frequency Regulation Load Shift

$

Annual Market Value ($ million) Longer Duration (MWh)

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Grid Net Value Summary

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Net Costs and Benefits are real levelized values per EV per year

Grid Net Cost / Benefits (real levelized) V2G Battery Use Case Description Control Mode Un- managed V1G V2G Battery cycles Discharge Energy (kWh) Unconstrained High Value V2G Utility

  • $345
  • $92

$1,380 251 15,051 High Value V2G Utility

  • $345
  • $92

$1,021 164 10,225 High Value V2G without AS Utility

  • $345
  • $92

$1,005 133 7,969 Base V2G Case Customer

  • $248
  • $94

$313 105 6,293 Base V2G Case w/o AS Utility

  • $248
  • $94

$243 105 6,322 Base V2G Bill Optimized Case Customer

  • $248
  • $278

$105 155 9,325

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SLIDE 17

Incremental Grid Benefit of V2G

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Incremental benefit is presented as a real levelized value per EV per year

Incremental Grid Benefit V2G Battery Use Case Description Control Mode V1G vs Unmanaged V2G vs V1G Battery cycles Discharge Energy (kWh) Unconstrained High Value V2G Utility $253 $1,472 251 15,051 High Value V2G Utility $253 $1,113 164 10,225 High Value V2G w/o AS Utility $253 $1,097 133 7,969 Base V2G Case Utility $154 $407 105 6,293 Base V2G Case w/o AS Utility $154 $337 105 6,322 Base V2G Bill Optimized Case Customer

  • $30

$383 155 9,325