Planning for Fleet Electrification Marc Manning 1 CTAs Electric - - PowerPoint PPT Presentation

1

Planning for Fleet Electrification Marc Manning

2

CTA’s Electric Bus

3

• New Flyer XE40 with 300 kW-hr Battery Capacity

Electric Bus Design

Strings 1 & 2 String 3 String 4 String 5 String 6 Conventional Engine Compartment Rear Energy Storage Compartment

4

• Livery
• Interior Promotional Advertising

Bus Promotional Design

5

Kedzie Charging Infrastructure

Bypass Lane Bypass Lane Bus Parking Lane Bus Parking Lane

Building Beam Aligned with Front Door to ensure proper bus spacing.

6

77th Charging Infrastructure

Dedicated Bay for Electric Bus Manager’s office Yellow Parking Lines & Yellow Bollard for Front Door Positioning

Bus Inspection Lanes Bus Maintenance Bays

7

Cold Weather Solutions

Note: Table from “E-Truck Performance in Cold Weather” by CALSTART

8

Electric Bus Daily Revenue Schedule

Morning Revenue Service 50-60 miles (~6 hours) Mid-Day Charge @ Garage (~3-5 hours) Afternoon Revenue Service 70-80 Miles (~8 hours) Overnight Charge @ Garage (~3-5 hours)

Note: Ridership for routes is published here  http://www.transitchicago.com/ridership/

9

Depot Charge Analysis (Kedzie Garage)

10

• CTA has 7 Garages with 1,868 Buses in Revenue Service

– 248-289 Buses per Garage – 308 60 ft. Buses & 1560 40 ft. Buses

Note: Estimated Battery Capacity based on 4 kw-hr/mile. This doesn’t account for end of life or 80% Useable State of Charge. Battery cost per bus based on Bloomberg New Energy Finance presentation on “Lithium-ion Battery Costs & Market.”

Vehicle Block Information - CTA

11

• 159 Vehicle Blocks with less than 80 miles of Range

Vehicle Block Information – Kedzie Garage

Only Vehicle Blocks <80 Miles

12

• Strategies to deploy depot-only bus

– Maximize Mileage: Charge Midday

• Allows for Greater than 100 miles per day
• Requires 84 Buses to operate

– One Charge Per Day: Shifts Charging to Night Only

• Maximum of 80 miles per day per bus.
• Requires 90 Vehicles to operate
• High Level Assumptions

– 80 miles of Maximum Range before Charging – All charging directly to High Voltage Battery

• No charge reduction at end of charging cycle.
• 100% charge efficiency

– Buses are on schedule

• No early departures or late arrivals

– Buses are available immediately upon arrival for charging – Buses available for service after fully charged – No limit to Peak Demand – No limit for Maximum Number of Chargers.

Strategies & Assumptions

13

Strategy Outcome

Require Midday Charge Require 1 Charge Per Day 21 Buses could be charged Midday for Greater than 80 Miles

14

Peak Demand for 100 kW Charger

What Demand can Garage Support? How Many Chargers can be installed at Garage? Charge Mid-day to have spare available buses for PM Distribute Charging to Optimize Distribute Charging to Optimize

15

Demand Cost for 100 kW Charger

$2.00 Per Gallon (Diesel) $3.00 Per Gallon (Diesel) ~$0.14 per Mile Supply Charge @ $0.043 per kW-hr (Not Included) Shift charging to Off- Peak Distribute Charging to Optimize

16

Questions for Next Steps

17

Questions for Next Steps

• What Scale-Up Approach is planned?
• What is the Peak Demand Limit?

– What is the Charging Location Limitation? – What is the Utility Limitation?

• How Many Chargers can be Installed?

– Is there Enough Real Estate? – What Cost is Available for Each Charger? – Is there Enough Power to Support? – What type of Charger?

• What Range Allows for best Optimization?
• What is target for Cost Per Mile?

– What is the Variability for Diesel vs. Electricity Cost?

• What Utility Rate Structures are available?

– Would the Utility create a E-Bus special rate?

• How much extra time needed for charging?
• What technologies could help manage charging?
• What are the seasonal (cold weather) affects on range?

18

Contact Information

Marc Manning 7801 S Vincennes Ave Chicago, IL 60620 Cell: 312.204.9235 Email: mmanning3@transitchicago.com