Attributes of the Chevrolet Volt

VOLT Lithium-Ion Battery 288 Cells 70% of the Cost Module Pack

VOLT Lithium-Ion Battery

The Battery Challenge Lithium-Ion Battery Pack n 16 kWh (8kWh usable) n High energy/High Power n Efficiently packaged > 6 ft. in length > 375 lbs n Reasonable cost n 10 yr life/150,000 miles Lithium-Ion Battery Pack n 16 kWh (8kWh usable) n High energy/High Power n Efficiently packaged > 6 ft. in length > 375 lbs n Reasonable cost n 10 yr life/150,000 miles

Early Vehicle Testing and Learning

Next Phase of Testing and Learning

Next Phase of Testing and Learning Mule Vehicles now in Test

Charging and Infrastructure

Charging Power Level 3.3 kW/240V charging will usually require a one time investment to upgrade the garage with a dedicated 240V circuit Full charge is <3 hours – very acceptable Fast charging will have customer value 1.2 kW/120V charging may work depending on the customer’s situation Full charge in minimum 8 hours (temperature dependent) May require understanding and control of other devices on the circuit Charger and control logic is on-board the vehicle Designed for global voltages 120V charge cord comes with the vehicle in NA

GM/EPRI/Utility Collaboration for Electrical Infrastructure The Collaboration includes more than 40 Utilities in North America… many the industry’s thought-leaders in electric transportation and grid interaction GM / EPRI / Utility Collaboration

Why collaboration is important?

Impact on the Electric Grid Electricity: An important energy source with significant capacity to support transportation 10 million E-REVs in 2010 would add a load that is less than 1% of the total grid load

Electric Grid Design for Peak Demand The last 5% of the system’s capacity is needed less than 1% of the time The last 25% of the system’s capacity is only needed about 10% of the time The real objective of smart charging is simply to avoid these peaks with most of the vehicles out there This has tremendous value for the utilities – and very achievable once the technology is in place to manage vehicle charging For example, in California like most hot-weather states with a lot of air conditioning:

Electric Grid Design for Peak Demand Volt leverages off-peak for charging

820 MILLION VEHICLES <1% are Electrified Vehicles (Hybrid, Battery Electric or Fuel Cell)

Will Take >20 Years to Replace Them with More Energy Efficient Vehicles

Thank you