Hi there!
I tried to replicate your issue but whenever I sleep the energy recovers just fine.
There are 2 factors that affect Energy consumption (not recovery):
1. Toxicity: If you have consumed some alcohol, your Energy consumption will slightly increase until you're back to 0% Toxicity.
2. Health (not HP): Good meals increase the Health stat. At 0% the Energy consumption doubles up.
Are you perhaps sleeping with an Alarm set?
Feel free to jump into Discord if you have a way to reproduce the issue and we can troubleshoot it.