Breaking the Biofuels Sugar Cost Barrier

CEO Kef Kasdin

April 21, 2011

Refine

CO2

+H20+

Nutrients

Fuels & Chemicals

FeedCreation

Growth$

Harvest$

Process$

Logistics$

Sugarcane, Corn, Cellulose

From Sunlight to Sugar Today

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The cost amplifier

From Sunlight to Sugar Today

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World sugar price volatility

Sugarcane Economics

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Productivity Per Acre Drives Cost

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State of the Art: Liquid Photobioreactor

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Proterro is developing a fermentation-ready sugar to enable economical production of biofuels and chemicals.

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Protose:• Is feedstock, not fuel• Is not derived from corn, sugarcane, or

cellulose• Does not require harvesting or separation• Is a geographically flexible sugar source

Refine

CO2

+H20+

Nutrients

Fuels & Chemicals

FeedCreation

From Sunlight to Protose

8

Removing the cost amplifier

•Lower cost than sugarcane, corn or cellulose•Significantly higher productivity per acre•Reach market through partners

Proterro Protose™ Sugar

Synthetic Biology Accomplishment

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Engineered a novel sugar-producing organism

Natural SystemCyanobacteria

+ salt = sucrose

Final strainfor continuous, scalable Protose production

DNA Manipulation

Proterro Invented Solid Phase PBR

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Demonstrated & Scaled 10x; Modular approach

1 foot x 1 foot 1 meter x 1 meter

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Kef Kasdin, CEOkef@proterro.com

Proterro, Inc.103 Carnegie CenterSuite 100Princeton, NJ 08540