Factorio Forums

Posted: **Mon Sep 22, 2025 2:34 am**

As of 2.0, upgrade planners can upgrade fuel in blueprinted vehicles. However, it doesn't seem to check whether fuel types are actually compatible, because it lets you upgrade coal into fusion power cells, even though they share no fuel types in common. It even seems to work on blueprints, letting you make cursed things like a train with fusion cells:

Doesn't seem to actually work, but it's a pretty cursed blueprint.

Posted: **Tue Sep 23, 2025 4:14 pm**

Thanks for the report. I've added some simpler filtering when applying upgrade planners to prevent this when possible.

Factorio Forums

[2.0.66] Coal can be upgraded into fusion power cells

[2.0.66] Coal can be upgraded into fusion power cells

Re: [2.0.66] Coal can be upgraded into fusion power cells