UNITED STATES

|   | x | ANNUAL REPORT PURSUANT TO SECTION 13 OR 15(d) OF      THE SECURITIES EXCHANGE ACT OF1934 |
|--------|---|------------------------------------------------------------------------------------------|

|   | o | TRANSITION REPORT PURSUANT TO      SECTION 13 OR 15(d) OF THE SECURITIES EXCHANGE ACT OF      1934 |
|--------|---|----------------------------------------------------------------------------------------------------|

| FLORIDA                                                                 |   | 59-2479377                                    |
|-------------------------------------------------------------------------|--------|-----------------------------------------------|
| (State or other      jurisdictionof incorporation or      organization) |   | (I.R.S.      EmployerIdentification      No.) |

| Securities      Registered Pursuant to Section 12(b) of the Act: |
|------------------------------------------------------------------|
| Title      of each class                                         |   | Name      of each exchange on which registered |
| Common      stock, par value $0.01 per share                     |   | Nasdaq      Global Market |

|   | Large accelerated filer  o |   | Accelerated filer  x |   | Non-accelerated filer   ̈o |   | Smaller reporting company  o |
|--------|------------------------------------------------|--------|-------------------------------------|--------|-----------------------------------------------|--------|--------------------------------------------------|

----

----

|                 | ENER1,  INC. |
|----------------------|--------------|
|                 |         |   |
| Dated: June 23, 2009 | by:          | /s/ Charles      Gassenheimer |
|                 |         | Charles      Gassenheimer |
|                 |         | Chief Executive      Officer |

| Signature                     |   | Title                                                               |   | Date             |
|-------------------------------|--------|---------------------------------------------------------------------|--------|------------------|
|                          |   |                                                                |   |             |
| /s/ Charles      Gassenheimer |   | Chief Executive Officer,      Chairman                              |   | June 23, 2009    |
| Charles      Gassenheimer     |   | (Principal Executive      Officer)                                  |   |             |
|                          |   |                                                                |   |             |
| /s/ Peter    Novak            |   | President,      Director                                            |   | June 23, 2009    |
| Peter Novak                   |   |                                                                |   |             |
|                          |   |                                                                |   |             |
| /s/ Gerard A.      Herlihy    |   | Chief Financial      Officer                                        |   | June 23, 2009    |
| Gerard A.      Herlihy        |   | (Principal Financial Officer and      Principal Accounting Officer) |   |             |
|                          |   |                                                                |   |             |
|                          |   | Director                                                            |   |             |
| Kenneth    Baker              |   |                                                                |   |             |
|                          |   |                                                                |   |             |
|                          |   | Director                                                            |   |             |
| Marshall    Cogan             |   |                                                                |   |             |
|                          |   |                                                                |   |             |
|                          |   | Director                                                            |   |             |
| Mark D’Anastasio        |   |                                                                |   |             |
|                          |   |                                                                |   |             |
| /s/ Elliot    Fuhr            |   | Director                                                            |   | June 23, 2009    |
| Elliot Fuhr                   |   |                                                                |   |             |
|                          |   |                                                                |   |             |
| /s/ Karl    Gruns             |   | Director                                                            |   | June 23,    2009 |
| Karl Gruns                    |   |                                                                |   |             |
|                          |   |                                                                |   |             |
| /s/ Ludovico      Manfredi    |   | Director                                                            |   | June 23,    2009 |
| Ludovico      Manfredi        |   |                                                                |   |             |
|                          |   |                                                                |   |             |
| /s/ Thomas      Snyder        |   | Director                                                            |   | June 23,    2009 |
| Thomas    Snyder              |   |                                                                |   |             |

----