NASA / Boeing · USA
Rocket Lab · New Zealand / USA
| SLS Block 1 | Metric | Electron |
|---|---|---|
| 95,000 kg+31567% | Payload to LEO | 300 kg |
| 27,000 kg+>100% | Payload to GTO | N/A |
| 98.1 m+445% | Height | 18 m |
| ~$40,000+/kg | Cost per kg | +60%~$25,000/kg |
| 100%+5% | Success Rate | 95.4% |
| 2022 | First Flight | +0%2017 |
| No | Reusable | Yes |
| NASA / Boeing | Company | Rocket Lab |
| USA | Country | New Zealand / USA |
Payload to Low Earth Orbit (LEO) — relative scale
4
SLS Block 1 wins
0
Tied
3
Electron wins
SLS Block 1 delivers 31567% more payload to LEO, making it the heavier lifter.
Electron is more cost-effective at ~$25,000/kg vs ~$40,000+/kg.
SLS Block 1 has a higher success rate (100% vs 95.4%), indicating greater flight heritage.
Electron is reusable, which can significantly reduce long-term launch costs.
Overall, SLS Block 1 wins on more metrics (4 vs 3), though each rocket is designed for different mission profiles.