Gravity Power will discuss its energy storage power plants in comparison to combustion turbine plants and other storage for peaking and ancillary services power. The “Gravity Power Module” (GPM) hydraulically lifts a massive piston inside a deep vertical shaft to store energy, and releases the piston on demand to force water through a hydro turbine. Early units will supply 40-150 MW for 4 hours or more. The Company plans to sell turnkey plants, operate and maintain and joint venture or license technology in strategic markets. It is working with developers in Texas, California, New York, the Mid-East, South Africa, India, China, Turkey, France, Germany and Mexico to progress demonstration projects and commercial installations, the first to be completed in 2013.

1. PRINCIPAL SOLAR WEBINAR Storage-Based Ancillary Service and Peaking Power Plants October 11, 2011

5. Energy Storage Worldwide Energy Storage Capacity (MW) Could match supply to demand… …if far more storage were available. Pumped Hydro Over 99% of Total Storage Capacity

8. 150MW GPM

12. Company Milestones 2009 2010 2011 2012 2013 2014 Start-up GPM System Design B-Round Financing Complete Scale Prototype Commercial Demo

15. Financial Projections ($000,000) 2011 2012 2013 2014 2015 Demo Country 0 5 1 0 Ancillary Unit Sales 0 0 0 0 Peaking Unit Sales 3 8 26 Revenue $0 $63 $134 $333 $1,423 Year-End Backlog $0 $208 $73 $2,689 $4,602

17. Tom Mason, CEO (925) 785-8825 [email_address] www.gravitypower.net