The document provides information on Proterra's new 40-foot Catalyst electric bus. It summarizes that the bus is longer and lighter than previous models, offers the highest fuel efficiency on the market of 20.8 MPGe, and features fast-charging capabilities allowing it to operate continuously on routes without overnight charging needs. The bus is designed to improve ergonomics, simplify maintenance, and focuses on safety features like utilizing composite materials and strategically placing batteries below the impact line.

1. BUS
CONFIGURATION
For more information on Proterra, please visit proterra.com.
WE TOOK OUR
INDUSTRY-LEADING
EV BUS AND MADE
IT LONGER, LIGHTER
AND MORE EFFICIENT.
Proterra®
is the first electric bus manufacturer to have completed
Altoona testing, with our electric buses logging more than 500,000
miles in revenue service anywhere in the United States. The new Proterra
Catalyst™ electric bus builds on this record of success, with noticeable
improvements.
The new Proterra Catalyst™ electric bus is 40-feet long, yet still weighs less
than our previous lightweight 35-foot electric bus. It offers the highest fuel
efficiency on the market of 20.8 MPGe, a fast-charge system that keeps
your bus on the road with no overnight charging requirements, one-step
access for ease-of-maintenance and industry-leading ergonomics.

2. BUS CONFIGURATION
INTERIOR
ADA
DRIVE TRAIN
DIMENSIONS
BRAKES/SUSPENSION
ELECTRICAL SYSTEM
EXTERIOR
WARRANTY
PERFORMANCE
• Overall Length 42’6”
• Overall Width 102”
• Overall Height 135.5”
• Wheelbase 24’ 8”
• Approach Angle 8.8°
• Breakover Angle 7°
• Departure Angle 8.7°
• Turning Radius 41.9’
• Curb Weight* 27,500 lbs
• Gross Vehicle Weight* 39,050 lbs
• Front Axle* 15,660 lbs
• Rear Axle* 28,660 lbs
• Michelin 305/70R22.5 tires with forged
aluminum wheels
• Power exterior mirrors with integrated
turn signals and heat
• Romeo rim front & rear bumpers
• White exterior gelcoat finish
• LED exterior lights
• Halogen headlamps
• Front & rear air disc brakes
• 4-wheel ABS with optional traction
control
• Side or full - kneeling suspension
• Independent front suspension
• Multi - link air ride (4 bag)
rear suspension
• High Voltage:
- Advanced Lithium Titanate fast-
charge energy storage system
- Integrated battery management
system
• Low Voltage: Two Group 31 700 CA
12V batteries
• Overhead charging system
• Communication system: REI CD-
2000 PA Radio, 30” Mic, 8-int. & 2-ext.
speakers*
• Complete bus - 1 year or 50,000 miles
• Extended warranty & service
contracts available upon request
• Batteries - 3 year
• Employs new APTA seating system
• 35.5” aisle width
• Fuel Economy (with full passenger
load and HVAC): 20.8 MPGe
(1.81 kWh/mile)*
• Top Speed: 65 mph
Speed Acceleration Seconds*
0-10 3.3
0-20 6.8
0-30 14.5
0-40 27
0-50 43.3
*Validated at Altoona on Proterra’s first
electric bus. Preliminary testing indicates
improved performance for Proterra’s
40-foot electric bus.
• Modesty panels at the rear door
• LED interior lighting
• Total available floor space
passenger capacity = 77:
40 seated and 37 standees
• Federal legal passenger load =
54: 40 seated and 14 standees.
• Industry- leading window area,
including spacious rear window
• Stainless - steel stanchion system
• ADA pull cord stop request with chime
• Sensitive edges on both front and rear
doors
• Electric wipers & washers
• Roof - mounted electric HVAC
•Door Widths: Front 34”, Rear 39.5”
• Two ADA locations; one on each
side of the aisle directly behind the
wheel wells
• ADA securement systems
• Front ADA power wheelchair ramp
(4:1, 6:1 slope)
• 220 kW peak permanent magnet
drive motor
• Roof - mounted cooling system
• Proterra 2 - speed auto-shift EV
transmission
40-FOOT PROTERRA CATALYST™
For more information on Proterra, please visit proterra.com.

3. FAST-
CHARGE
FLEXIBLE
FAST-CHARGING
THAT FITS EASILY INTO
BUS ROUTES AND
SCHEDULES.
The Proterra®
fast-charge system allows for maximum run time and
minimum wait time. On-route charging can be completed in the time
needed to stop for passengers or a quick driver break. This way, you can
maintain a 24/7 transit system while minimizing extended charging time.
It’s the best of both worlds.
One charging station can accommodate up to 8 buses; even more
when utilized in a larger scale deployment. The charging station is
specifically designed for the average bus route serving downtown
business loops or tourist areas.
For more information on Proterra, please visit proterra.com.

4. How the Proterra charging station works:
Once the Proterra®
bus comes within range of the charging station, the station wirelessly connects with the bus
and automatically limits the bus speed to allow for connection. Although the bus is speed limited, the driver
retains full control of the bus at all times during the charging process.
Safe for passengers, safe for drivers.
• All high-voltage areas are clearly identified and designed with redundant automatic and manual service
disconnects
• An automatic insulation test is performed at the beginning of each charge to confirm the safety and integrity
of all high-voltage cables used during the charging process
• During the charging process, the system is constantly monitoring isolation and will cancel the charging process
if an alert occurs
• Multiple separate controllers audit the charging process and each has the capability of cancelling the charge
if anything appears abnormal
• In addition, our composite body, while contributing to overall lighter weight and durability, does not conduct
electricity
FAST-CHARGE
Fast-Charge
On-Route
Semi-Autonomous
Overhead Charge
Composite Body
Regenerative Braking
24/7 operation keeps the bus on the road
No special overnight storage/charging requirements
Attaches to existing structure or dedicated pole
Doesn’t conduct electricity
Reduces brake wear and increases efficiency via energy recovery
Maintains route schedule/simultaneous passenger loading
Charger guides bus into position
Feature Benefit
For more information on Proterra, please visit proterra.com.
40-FOOT PROTERRA CATALYST™

5. FLOOR
PLAN
LONGER.
LIGHTER.
SAFER.
IMPROVED
ERGONOMICS.
The Proterra®
EcoRide™ was the world’s first electric bus with fast-charge-
enabled infinite range. The Protera Catalyst™ is a 40-foot electric bus
that continues our proven electric bus tradition, while offering noticeable
enhancements.
The Protera Catalyst™ is built from the ground up to offer our longest
and lightest electric bus, yet is designed to deliver more revenue
per trip. It offers industry-leading, ergonomically advanced design
through a larger cabin, more passenger seating options, the broadest
line of sight on the market and a spacious rear window.
For more information on Proterra, please visit proterra.com.

6. FLOOR PLAN
Spacious rear-deck area increases comfort for passengers
Base configuration accommodates 40 seated passengers
For more information on Proterra, please visit proterra.com.
40-FOOT PROTERRA CATALYST™

7. MAINTAINABILITY
SIMPLIFY YOUR
MAINTENANCE TO
SAVE TIME AND
MONEY.
Oil changes are a thing of the past. Without an engine, fuel system,
engine cooling system, exhaust system or emissions after treatments,
maintenance savings with Proterra®
can add up to $135,000 over the
lifetime of a bus compared to diesel. And, with a substantial reduction
of parts inventory, you can enjoy more savings.
The Proterra Catalyst™ is also designed with durability and customer
conveniences in mind—such as one-step access to vital mechanical
components—so you can keep your buses moving and lower your total
cost of operation.
For more information on Proterra, please visit proterra.com.

8. MAINTAINABILITY
Compared to diesel:
• Up to $135,000 total savings
• 30% fewer parts
• Reduced maintenance labor
• No engine oil changes
• No liquid fuels
• Regenerative braking = extended time between
brake replacement / repair
• Durable composite bus body is light and
corrosion-resistant
Proterra support:
• Dedicated launch team ensures a seamless transition into revenue service
• Nationwide field service network enables prompt response times
• 24/7 parts and technical support
Main Electrical
Cabinet
Coolant Pumps
Low Voltage
(24v) Batteries
Service Panel
– Manual Charge Port
– Coolant Fill Switches
1
2 4
3 4
2 Air Compressor5
1
3
5
For more information on Proterra, please visit proterra.com.
40-FOOT PROTERRA CATALYST™

9. CONTINUOUS 24/7
OPERATION WITH
ROUTINE FAST-
CHARGING DURING
REVENUE SERVICE.
It’s not how far an electric bus can go. It’s how the bus maximizes route
uptime that matters most. The Proterra®
Catalyst™ bus was designed
with transit routes in mind. Proterra’s engineering team works with its
customers to design route plans and a strategic, on-route, fast charge
location(s) to allow for continuous operation.
Using its on-route, fast-charging technology, Proterra has demonstrated
that its electric bus can travel over 700 miles in a 24 hour period,
alleviating customer concerns about limited range in Proterra’s electric
buses.
INFINITE
RANGE
For more information on Proterra, please visit proterra.com.

10. On-Route, Fast-Charging Technology:
• High availability on route
• Charges during revenue service
• Adheres to route schedules
• Stays on road all day and night
• Fully recharges the batteries in less than 10 minutes, with
average customer charge time being less than 5 minutes
per hour of operation
INFINITE RANGE
Fast-Charge
On-Route
24/7 operation keeps the bus on the road
No special overnight storage/charging requirements
Maintain route schedule/simultaneous passenger loading
Feature Benefit
For more information on Proterra, please visit proterra.com.
40-FOOT PROTERRA CATALYST™

11. A FOCUS ON
SAFETY, FROM TOP
TO BOTTOM.
Proterra’s®
electric bus utilizes proven, road-tested safety design features.
It is built with a composite body that utilizes the highest strength-to-
weight ratio material available. The composite body utilizes carbon
fiber in key impact and seating areas to further improve strength and
crash resistance.
Battery placement is a critical component of safety. Unlike other electric
buses, Proterra bus batteries are integrated into the vehicle floor,
between the front and rear axles, to keep them isolated from the
passenger compartment and below the vehicle impact line. And all are
reinforced by S2 fiberglass/Kevlar containment structures.
SAFETY
For more information on Proterra, please visit proterra.com.

12. Electric bus technology safety procedures:
• All high-voltage areas are clearly identified and designed with
redundant automatic and manual service disconnects
• An automatic insulation test is performed at the beginning of each
charge to confirm the safety and integrity of all high-voltage cables used
during the charging process
• During the charging process, the system is constantly monitoring isolation
and will immediately cancel the charging process if an alert occurs
Smart, safe battery placement:
• Improves vehicle dynamics due to the low vehicle center of gravity
• Assists in weight distribution for optimal braking and traction
• Keeps batteries isolated from the passenger compartment
• Provides improved protection from collision impact
• Batteries are protected from the elements in water-tight containers
SAFETY
For more information on Proterra, please visit proterra.com.
40-FOOT PROTERRA CATALYST™

13. DESIGNED TO LOWER
YOUR TOTAL COST OF
OWNERSHIP. TODAY
AND TOMORROW.
You don’t have to wait the entire life of the Proterra®
bus to improve your
bottom line. Transit agencies and municipalities can enjoy a dramatic
reduction in operating costs thanks to higher fuel efficiency, less volatile
energy prices, lower maintenance costs and less wear and tear on local
roads. Control your operating budget, and your maintenance costs, like
never before with Proterra.
TOTAL COST
OF OWNERSHIP
For more information on Proterra, please visit proterra.com.

14. HybridDiesel CNG Proterra
Electric Bus
Lifetime Costs
Fuel Costs Maintenance Costs
$600
$400
$200
$800
$(000s)
$0
2000 2004 2008 2012
Diesel
CNG
Electric
$45
$20
-$5
TOTAL COST OF OWNERSHIP
Fuel savings comparison*:
• Lifetime fuel savings of up to $365k vs. diesel
• Lifetime fuel savings of up to $225k vs. CNG
• Lifetime fuel savings of up to $250k vs. hybrid
• Lower historical price volatility for electric bus vs. diesel or CNG
*36,000 miles anually
Fewer parts to create lower maintenance costs:
• 30% fewer parts
• Reduced maintenance labor
• Regenerative braking = fewer brake repairs
• No expensive exhaust after-treatments, no oil changes, no liquid fuels
• Up to $135k in lifetime maintenance savings
For more information on Proterra, please visit proterra.com.
40-FOOT PROTERRA CATALYST™

15. FLEXIBLE
FAST-CHARGING
THAT FITS EASILY
INTO BUS ROUTES
AND SCHEDULES.
The Proterra®
fast-charge system allows for maximum run time and
minimum wait time. On-route charging can be completed in the time
needed to stop for passengers or a quick driver break. This way, you can
maintain a 24/7 transit system, and since it allows for distributed grid
loading, it is much easier on the grid. It’s the best of both worlds.
One charging station can accommodate up to 8 buses; even more
when utilized in a larger scale deployment. The charging station is
specifically designed for the average bus route serving downtown
business loops or tourist areas.
FAST-CHARGE
SPECIFICATIONS
For more information on Proterra, please visit proterra.com.

16. • Emergency stops (E-stops) as
required per site
• An Insulation Test is performed at
the beginning of the charge to
confirm the safety and integrity of
all high-voltage systems
• On the bus route where passenger
loading/unloading occurs
• Grid should be able to support
additional 500 kW near site
• Clear from traffic
• Bus should approach the charge
head assembly parallel to the curb
utilizing at least 70’
• 40’ distance forward from charge
head assembly for length of bus
• During the charging process, the
system is constantly monitoring
isolation and will immediately
cancel the charging process if an
alert occurs
• Input Power: Maximum 500 kW
(Nominal 450 kW)
• Input Voltage: 3 Phase 480 VAC,
1 Phase 120 VAC
• Input Current: 480 VAC: 640 Amps
• Input Frequency: 60 Hz,
120 VAC, 20 Amps
• Power factor: Nearly 1.0
• Main safety disconnect switch
• Internet service connection
FAST-CHARGE SPECIFICATIONS
Electrical Requirements:
Safety Features:
Site Location Requirements:
For more information on Proterra, please visit proterra.com.
40-FOOT PROTERRA CATALYST™

17. ZERO TAILPIPE
EMISSIONS COMBINED
WITH THE HIGHEST
FUEL ECONOMY ON
THE MARKET.
The Proterra®
Catalyst™ 40-foot electric bus is 100% electric, and
produces zero tailpipe-emissions. Even better, it has no tailpipe
and runs virtually silent. And because it’s lighter—up to 2 tons
lighter than a conventional bus—it causes less wear and tear on
city roads.
Over the lifetime of the Proterra bus, you can save up to $365,000
in fuel when compared to diesel and up to $225,000 when
compared to CNG at current pricing.
SUSTAINABILITY
For more information on Proterra, please visit proterra.com.

18. CO2-equivalent greenhouse gas emissions based on the
Argonne National Lab GREET Fleet Footprint GHG Model 2012
Built in USA
MPGe
SUSTAINABILITY
Green Benefits – CO2 Equivalent GHG lbs
Fuel Cost Fuel Economy
Diesel CNG Hybrid Proterra
$445
$100
$200
$300
$400
$500
$600
$700
$ (000s)
12-yr
$308 $327
$81
Diesel CNG Hybrid Proterra
3.86 3.27
5.25
20.8
5
10
15
20
25
30
Diesel Diesel-Hybrid CNG Electric (CA
Energy Mix)
266,600
196,000
275,100
46,800
For more information on Proterra, please visit proterra.com.
40-FOOT PROTERRA CATALYST™
Electric Bus Electric Bus