NRG Energy and NRG EV Services Overview of NRG Energy and NRG EV Services

NRG is a national wholesale and retail power company. NRG Overview NRG Wholesale NRG Retail Fuel Supply Fuel Transportation Power Generation Transmission Distribution Retail (Customer) NRG Wholesale Generation totaling ~25,000 MW NRG retail: Serves 1.8 million customers Company Facts: > Added to the S&P 500 Index (2010) > Fortune 500 – Ranked 12th Fastest Growing Company (2009) > Fortune 500 – Ranked in top 10% for “Best Investment” (2008) > Platt’s 2007 Recipient of Energy Company and Industry Leader of the Year > Stock Listing: NRG (NYSE) with ~$6 billion market cap > Employees: ~4,300 > Generating Assets: ~25,000 MW, primarily in four domestic regions > Retail Customers: ~1.8 million in the Texas and New York competitive markets No sovereign territory or rate-based assets Compete daily to sell our services to wholesale and retail customers NRG is a national wholesale and retail power company.

EVs are a key element of NRG’s clean energy strategy. NRG Strategy Low Carbon Generation “Our strategy [is] to produce and deliver clean, zero-emissions products and services to America’s growing number of clean energy consumers” David Crane, October 2010 Ivanpah Solar Project Press Release NRG strategy is to “move clean energy forward” but delivering clean, zero-emission services to customers We believe this requires a mix of wholesale and retail facing skills Specifically, we see this strategy playing out in three areas: Low Carbo Generation, Smart Grid Service, and EV Ecosystems Smart Grid Services Electric Vehicle Ecosystems EVs are a key element of NRG’s clean energy strategy. 3

Electric Vehicles: Compelling Benefits… … across multiple stakeholders 1. Consumer: > Exciting > Convenient > Sustainable > Affordable Auto industry plans align with federal objectives to put 1M EVs on U.S. roads by 2015 2. Country: > Energy security > Environmental Gain > Economic growth EVs hold strong, multi-faceted benefits to customer, country, and commercial companies 3. Company: > Economic growth > Brand differentiation > Business opportunities 4

eVgo: Addressing EV Adoption Barriers Solutions Range Anxiety Upfront Cost Cost of Ownership Metropolitan-wide network of charging stations equipped with DC fast chargers Workplace charging programs that can augment home charging Upfront cost of equipment and install is amortized into monthly fee with tax benefits included Cost-effective options for placing primary charger at workplace or residential community Fixed monthly cost across the expected ownership period for hardware, install, network access and electricity NRG offers are deigned to address key ownership barriers.

NRG EV Services Programs REV Consumer Offers Home Plan Mobile Plan Complete Plan Business Offers Work Place Community Retail Fleets eVgo “Jump Start” Public Network Auto Relationships Power Partners Marketing/Sales Customer Support Operations Range Confidence Zero Upfront Cost Predictable Cost Brand/Differentiation Low Capex/Oppty Cost Low Tech Risk Traffic/revenue NRG is partnering with auto and power companies to develop a sustainable charging and fueling ecosystem. 6

Simple and convenient approach for fueling a commuter car. EV Fueling Model Home: Fueling in your overnight garage to leave with 100 miles of range each AM Destination: Fueling at work location to augment or even replace home charging Pathway: Fast re-fueling across a metro area to increase range confidence Convenience: Fueling “top-off” at retail locations during short stays Simple and convenient approach for fueling a commuter car. 7

EV Fueling Model Home Destination Pathway Convenience Charging Type: Use Case Long-Stay Refill while you sleep Long-Stay Refill while you work Short-Stay Refill to get back on road Short-Stay Top-Off while you shop/eat Unit Locations Private Garage Community Parking Workplace Garage Hotel/Airport Parking Metro/Train Station Quick-Stop On-Freeway Retail Shopping Restaurants Grocery Unit Type Level 2 EVSE 240V (at 30A) Level 2 EVSE 240V (at 30A) Level 3 DC Fast 3 Phase 480V (at 68A) Level 2 Commercial (240V at 30A) This slide outlines the various charging use cases that we have built the offers upon > The offers align with the various models for EV charging with focus on both the driver and the host > Let’s look specifically at the Fueling Bundle offer for consumer EV drivers Installed Cost $0-3,000 $2,000-$5,000 $50,000+ $4,000-$8,000 Charge Speed 12-24 mi/hr 12-24 mi/hr 100-200 mi/hr 12-24 mi/hr 8 8

Consumer Insights EV Driving Behavior Before quick charger addition…. After quick charger addition…. October 2007 July 2008 After Quick Charger Located Batteries were more fully utilized Batteries were used less than 50% Pathway charging enables confidence to fully utilize EV range 9

Current Product Offerings Complete Plan: 50% of customers Mobile Plan: 20% of customers Home Plan: 30% of customers 83% of EV customers intend to lease their vehicle 10 10

EV Purchase Behavior Insights After seeing the an EV together with the eVgo program: 63% of respondents indicated they would definitely or probably consider an EV for their next auto 58% of respondents indicated that learning about eVgo increased their likelihood to purchase an EV 16% of respondents said they would not have considered an EV before learning about eVgo but now they will 42% of respondents indicated they were already considering an EV and learning about eVgo increases their likelihood to purchase an EV 69% of respondents indicated that if they purchased an EV they would definitely or probably purchase an eVgo charging plan The eVgo Complete plan raises consideration and purchase likelihood of an EV. 11

Business Offers: The “Other” Work Place Solution Single Charger Install Access issues Policy issues Low visibility Low utilization Expensive upfront capital costs One parking spot with a charging station Sits visible and unused for some time Opportunity cost of lost parking Policy issues of employee benefits Potential imputed income issues No promotion or expansion plan Risk of parking space retaliation Single charger workplace install is a high-cost, high-risk solution that does not scale. 12

Business Offers: REV Work Place Destination Charging READY READY Reserved REV Work Place Simple Scale-able Visible Company funds only the electric make-ready of the facility Employees see the available EV opportunity everyday Subscription comes with the benefit of non-prime, reserved spot Parking spaces available for all to use while adoption ramps-up Just in time deployment of charging infrastructure with subscriber sign-up Company does not own, install, maintain, or support the chargers Energy consumed by employee is rebated back to company electric bill Company is not funding the fueling of personal automobiles 13

NRG EV Services has national scope with a regional focus National Foothold Strategy Northeast Stats 58 million people 45 million cars 100,000 Square Miles Midwest Stats 27 million people 23 million cars 90,000 Square Miles California Stats 37 million people 31 million cars 60,000 Square Miles Texas 24 million people 20 million cars 75,000 Square Miles Florida Stats 17 million people 14 million cars 25,000 Square Miles NRG EV Services has national scope with a regional focus 14 14

Texas “triangle” is a large and very attractive regional ecosystem Texas EV Ecosystems Culture > High car ownership levels with wide variety > Compatible commute patterns Infrastructure > Owned homes with garages > Power distribution and smart meters > Under-utilized off-peak assets > Strong night wind generation Environment > Non-attainment driven by tailpipe emissions > EV compatible climate and geography Energy Leadership > Leader of energy innovation > Pro-business climate > Competitive markets to drive innovation 2 275 Miles 240 Miles 4 3 1 200 Miles Source: TxDOT Texas “triangle” is a large and very attractive regional ecosystem

The eVgo Freedom Network: Houston Charge Zones eVgo Freedom Stations will provide range confidence across the greater metropolitan areas of the cities served. eVgo is the nation’s first commercially funded EV charging network. eVgo “user pays” model utilizes no taxpayer or ratepayer capital in delivering services. 16

The eVgo Freedom Network: North Texas Charge Zones 17

The eVgo Freedom Network: Charge Station Rendering Includes both Level 2 and DC chargers Designed to expand to multiple DC units Design includes customer support and asset management system Located for easy access, power availability, and retail engagement 18