Hydro Generator
A power structure, each level output the power from the astro hydro property. Only a few astro types has it
Power
Gas Collector
A power structure, each level output the astro gas property. Only a few astro types has it
You can build the Gas Refinery||Gas Refinery to increase the astro gas property and by doing that increasing your Gas collector output
Solar Collector
A power structure, each level output the astro solar property. If in 1st position it will be 4, 5th position it will have no solar