| Investor Name | Invest Money | Lead Investor | Propotion |
|---|
| Announced Date | Round | Money Raised | Investors | |
|---|---|---|---|---|
| Jul 25, 2008 | Series C | $ 24M | Esenjay Investments,Google,etc. | Detail |
| Apr 15, 2010 | Series Unknown | $ 9.80M | NRG Energy | Detail |
| Apr 9, 2007 | Series Unknown | $ 20M | Detail |