> For the complete documentation index, see [llms.txt](https://sayve-protocol.gitbook.io/sayve-litepaper/llms.txt). Markdown versions of documentation pages are available by appending `.md` to page URLs; this page is available as [Markdown](https://sayve-protocol.gitbook.io/sayve-litepaper/game-fi/elements/energy.md).

# Energy

Energy is needed to complete lessons. Energy recharges at a rate of **25% every 6 hours**. Depending on the amount of NFTs the user owns, the total energy cap will increase. You can see how the energy cap increases based on the amount of NFTs below:

```markdown
| Number of NFTs | Energy Cap | Number of Lessons (with max energy) |
| -- | -- | -- |
| 1 | 100 | 5 |
| 5 | 400 | 20 |
| 9 | 900 | 45 |
| 15 | 1200 | 60 |
| 30 | 2000 | 100 |

```