- CdTe cost roadmap and efficiency improvements over time - Performance benefits of CdTe thin film vs. crystalline silicon - Ability to affect system costs and BOS perspective Mark Chen, Director of Marketing Abound Solar

1. Maintaining CdTe manufacturing cost advantage
Scottsdale
January 21, 2011

2. Abound Solar overview
Product CdTe photovoltaic modules
Market focus Utility and commercial scale projects
History Nearly 20 years of development at Colorado State
University; spun out in 2007
Production Ramping first factory to 200MW, 840MW total capacity by
2014
Location 100% USA Manufacturing
Abound Solar, Inc. Confidential 1

3. Abound – Key Metrics
• Headquarters: Loveland, Colorado
Locations • Plant 1: Longmont, Colorado
• Plant 2: Tipton, Indiana (to be constructed)
Nameplate • 2010: 65 MW
Manufacturing • 2012: 200 MW
Capacity • 2014: >800 MW
Median Efficiency • November 2010: ~10%
• First factory: < $0.90 per watt
Production Cost
• GW-scale: < $0.60 per watt
Capex Cost • < $1.00 per watt of capacity
Abound Solar, Inc. Confidential 2

4. Step 1: Choose the right technology
CdTe can offer sustainable cost advantage
Source: Lux Research
Abound Solar, Inc. Confidential 3

5. Step 2: Drive production volumes
First Solar scale curve shows 15% cost reduction with every doubling of volume
3.00
2004
2.50
Production cost ($ / W)
2.00
2005
1.50
2006 2007
2008
1.00 2009
2010 20111
0.50
0.00
0 500 1000 1500 2000
Annual production run-rate (MW)
1) Projected
Sources: First Solar, Barclays Capital
Abound Solar, Inc. Confidential 4

6. Industry supply curve shows increasing cost of marginal
efficiency gains
2.00
SunPower
Suntech
Production cost ($ / W)
1.50
Trina
1.00 Trony
First Solar
0.50
0.00
0% 5% 10% 15% 20%
Module conversion efficiency
Sources: UBS, Barclays Capital, BCG, company financials
Abound Solar, Inc. Confidential 5

7. Efficiency-adjusted pricing shows demand for efficiency
SunPower
2.00
Suntech
First Solar
Trina
1.50
ASP ($ / W)
1.00
a-Si1
(single junction)
0.50
0.00
0% 5% 10% 15% 20%
Module conversion efficiency
1) a-Si pricing estimated due to lack of comparable
Sources: Greentech Media, juwi Solar, company financials
Abound Solar, Inc. Confidential 6

8. Profitability driven by gap between production cost and
marketing willingness-to-pay
2.00 FIT reductions
Market pressure
1.50
$/W
1.00 Demand Technological innovations
Production scale
Supply
Vertical integration
0.50
0.00
0% 5% 10% 15% 20%
Module conversion efficiency
Margin provides greatest room for error as prices and costs drop
Abound Solar, Inc. Confidential 7

9. Abound Solar driving to lowest manufacturing costs
1) Select fundamentally robust and proven semiconductor
2) Simplify production process
3) Drive yields and efficiencies
4) Increase production scale
Abound Solar, Inc. Confidential 8

10. Next generation CdTe – Doing it better, faster and simpler
Abound Production Process Using
Closed Space Sublimation (“CSS”)
• Proprietary semiconductor deposition process (single tool)
• Patented
Operational
Capex Advantages Product Advantages
Advantages
• Higher yields • Less costly/complex • Stronger modules
equipment
• Better materials utilization • More reliable modules
• Common hardware
• Greater uniformity • Lower voltage (lower BOS
• Fewer downstream costs for customers)
• Higher throughput process steps
• All black (aesthetics)
• Fewer process steps • Significantly smaller
• Easier to optimize production footprint
semiconductor process
Abound Solar, Inc. Confidential 9

11. Rapid scale-up versus First Solar validates the
manufacturability of Abound’s process
Modules Produced1,2 Line Yield1,2
Produced 67,000 modules in September 85% yield after 1st year of production
Module Power1,3,4
Achieved >68 Wp average module power five years faster
Ramping module efficiency ~5.5x faster than First Solar
Notes:
1 Abound Solar data beginning 9/09
2 First Solar data beginning 6/01 from NREL report
3 First Solar 2009 Analyst Day Presentation and Abound estimates
Abound Solar, Inc. Confidential 10

12. Leverage DOE loan guarantee to scale production
On December 9, Abound closed on $400M loan guarantee from US Department of
Energy
Two US Manufacturing sites
• Longmont, Colorado (200 MW)
• Tipton, Indiana (640 MW)
Abound Solar, Inc. Confidential 11

13. November 2009: 50kW in Oregon
Abound Solar, Inc. Confidential 12

14. March 2010: 190kW in California
Abound Solar, Inc. Confidential 13

15. June 2010: 800kW in Germany
Abound Solar, Inc. Confidential 14

16. July 2010: 2,400kW in Germany
Abound Solar, Inc. Confidential 15

17. November 2010: 5,600kW in Germany
Abound Solar, Inc. Confidential 16

18. Summary
Market pricing provides diminishing returns to higher efficiencies
Higher marginal cost to efficiency improvements as overall efficiency increases
Largest margin exists for low-cost 10-13% CdTe modules
Abound pursuing multi-pronged strategy to aggressively reduce costs while
optimizing efficiency
Abound Solar, Inc. Confidential 17