Stores surplus power and covers shortfalls, such as the night after solar panels go dark. Capacity grows with level; it can only supply a limited output, so a full one lasts 24 hours at its maximum draw.
Store excess generation for later deficits. Stored energy and discharge power are separate limits: a charged battery cannot cover an arbitrarily large instantaneous overload.
To establish this building, you need 🏛️ Main Building level 1; research: Storage Cells.
For later upgrades, the Main Building must also reach the target level. The level table shows the resource and time investment before bonuses.
The building definition has no direct structural or active power upkeep. Check the powered extractors, crafting and recruitment that support its use when planning the wider grid.
📸 Screenshot wanted: the Battery detail panel in a colony (level, upgrade cost and its main controls visible). If the building has a Race name, one shot per Race is ideal.
| Stat | Value |
|---|---|
| Max level | 20 |
| Level 1 cost | 120 Silicates, 90 Metals |
| Cost growth per level | ×1.28 |
| Base build time | 4 s |
| Build time exponent | 2.2 |
| Max per outpost | 3 |
Base numbers, before any research, Race, tile or build-speed bonus.
| Level | Cost to reach | Build time |
|---|---|---|
| 1 | 120 Silicates, 90 Metals | 30s |
| 2 | 155 Silicates, 115 Metals | 57s |
| 3 | 195 Silicates, 145 Metals | 1m 32s |
| 4 | 250 Silicates, 190 Metals | 2m 18s |
| 5 | 320 Silicates, 240 Metals | 3m 14s |
| 6 | 410 Silicates, 310 Metals | 4m 20s |
| 7 | 530 Silicates, 395 Metals | 5m 37s |
| 8 | 675 Silicates, 505 Metals | 7m 04s |
| 9 | 865 Silicates, 650 Metals | 8m 44s |
| 10 | 1105 Silicates, 830 Metals | 10m 34s |
| 11 | 1415 Silicates, 1065 Metals | 12m 36s |
| 12 | 1815 Silicates, 1360 Metals | 14m 50s |
| 13 | 2320 Silicates, 1740 Metals | 17m 16s |
| 14 | 2970 Silicates, 2230 Metals | 19m 54s |
| 15 | 3805 Silicates, 2850 Metals | 22m 44s |
| 16 | 4870 Silicates, 3650 Metals | 25m 47s |
| 17 | 6230 Silicates, 4675 Metals | 29m 02s |
| 18 | 7975 Silicates, 5980 Metals | 32m 30s |
| 19 | 10210 Silicates, 7655 Metals | 36m 11s |
| 20 | 13065 Silicates, 9800 Metals | 40m 05s |
Key: battery