The Geothermal Plant is a resource building located north of the Tourist Island expansion. It was added during an update on 08.06.2013.[1] During an update on 02.06.2014[2], the building was enhanced with more stages and new data.
For buildings purchased before 02.06.2014, the data is as follows:
For Foundation: 10
For L1: 15, 30 additional asset (30) and 2,500
For L2: 25, 30 additional asset (30), 5,000 and 7,500 production
For L3: 40, 30, 20 less asset (20), 10,000 and 11,000 production
For L4: 50, 45, 20 less asset (20), 12,000 and 16,000 production
For L5: 55, 50, 20 less asset (20), 14,000 and 21,000 production
A total of 260 assets are needed to complete construction of the Geothermal Plant. This is equivalent to 260 if one were to buy every asset instead of waiting to receive them from neighbors.