| type | creator | volts | amps | watts | joules |
|---|---|---|---|---|---|
| Cockcroft-Walton multiplier | Henning Umland | 160kV | 64 mA | 32777 W | 750 J |
| Cockcroft-Walton multiplier | Bjorn Baeverfjord | 300kV | |||
| Marx generator | Steve Ward | 900kV | 8 J |
| type | when online | project | volts | amps | watts | joules |
|---|---|---|---|---|---|---|
| Cockcroft-Walton multiplier | 1937 | original Cockcroft-Walton | 1,000,000 V | |||
| Marx generator | 2003 | Z machine (original) [1] [2] [3] | 5,700,000 V | 27,000,000 A | 20,000,000,000,000 W | 12,000,000 J |
| Marx generator | 2007 | Z machine (refurbished) [1] [2] [3] | 5,700,000 V | 27,000,000 A | 35,000,000,000,000 W | 27,000,000 J |