Tweaks to Aquilo. The starting island is smaller. Nuclear reactors no longer function on very cold surfaces. Crafting Fluoroketone now requires light oil.
Small changes concerning balance, gameplay, or graphics.
Map generation and terrain modification.
Furnaces, assembling machines, production chains.
Changes to power production and distribution.
by adding https://mods.factorio.com/mod/HeatDissipation
it says no UPS issues, but if it has them, could apply heat dissipation only to heating towers and other heat producing entities
I'm not sure this radical change to the heat economy is really appropriate for Aquilo. Hard Mode tries to avoid mechanics that are frustrating.