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Solar Power plant

In brief: “Solar Power plant” — a building of the “Energy” category in Xterium, mines the resource energy, available from the start of the game, maximum level — 65, base production at level 1 — 20 units/hour.

(data current as of 2026-05-22, game version 2.12.7)

Giant solar cells produce electricity for mines and deuterium synthesizers. Increasing the surface area of the photovoltaic cells leads to an increase in the energy produced and the stations efficiency.

Group
Energy
Where built
Planet
Max level
65
What it gives
Energy production
Energy
Produces energy
Solar Power plant

Description

What it is and why you need it

Solar Power plant — a building from the “Energy” category in Xterium. Produces the resource energy. The main energy source on the planet. Level it up alongside your mines.

When to build

Available from day one.

What to watch out for

  • Energy. The building produces energy itself — it powers mines and other consumers on the planet.

How much it mines

Production grows with each level. Here is how much the building yields per hour at key levels:

Level 1
Energy 21/h
Level 10
Energy 120/h
Level 20
Energy 770/h
Level 30
Energy 4 490/h
Level 50
Energy 117 400/h

The numbers above are output at “Energy technology” 0. To calculate with your own “Energy technology” level (it matters a lot), enter it into the interactive output growth chart below.

How final production is calculated

The numbers in the cards above are the base production on a server with multiplier 1, without bonuses and without planet anomalies. The final in-game value works out like this:

Total = base × server multiplier × (1 + planet bonuses in %) × (mine work percentage)

Where mine work percentage is a 0-100% slider (100% by default). If energy is short, the engine lowers this percentage by itself in proportion to the deficit.

For example: if the base production at level 30 equals X, and on the server the multiplier is 2 with a +30% metal-mining anomaly — the hourly total will be X × 2 × 1.3 × 1.0.

Build time depends on the level of the Robot Factory and the Nanite Factory, as well as any speed-ups applied. The higher these buildings, the faster.

Speeding up the build with DM: you can shorten the remaining build time for dark matter — the price depends on how much time is left. The less remaining, the cheaper.

Cost

Production growth by level

How much energy the building produces per hour at each level. Enter your “Energetics” level — the chart recalculates (it is part of the formula and has a strong effect). Server multiplier x1, no bonuses.

Price growth multipliers by ranges: lvl 30–44 ×1.23 lvl 45–64 ×1.24 lvl 65+ ×1.35

Construction cost at key levels
Level Metal Metal Crystal Crystal Deuterium Deuterium Time
1 555 140 — 00:42
16 13K 3 100 — 15:35
32 500K 120K — 07:42:30
48 19M 4.8M 790K 9d 03:51
65 3111.5M 778M 130M 1501d 00:18

How to use

Power plant — without it, mines don't run. Its level should stay ahead of your mine growth.

What improves production

Sources that boost this building. Open a source card to see the exact percentages and conditions.

Senators 1

The colony's permanent command staff. Each senator has a specialization and, once assigned, gives the colony a set of permanent bonuses that grow with their level.

  • Scientist Scientist — Senator for Science, Energy, and Expeditions.

Planet Anomalies 1

Planet features chosen and researched in the Planetarium (for dark matter or antimatter). Give a permanent percentage bonus to a specific effect for as long as the colony exists.

Boosters 1

Temporary boosters from tournament and quest rewards. Give a percentage bonus to a building's effect for a limited time.

Research 1

The empire's permanent research. Leveled up in the Laboratory and Technopolis, giving a global bonus to production, construction, or combat.

  • Energy Advances in energy technology make it possible to replace outdated components at power generation facilities.

If something is missing — where to look

Contextual alternatives for specific problems. Each block is a separate problem and the buildings that solve it.

If you don't have enough energy for mines and other buildings
Deuterium Power Plant — additional source, burning deuterium
Solar Satellite — satellites that cost nothing, depending on the planet's temperature
Particle Accelerator — Endgame Source + Dark Matter

Also: You can temporarily reduce the load by lowering the mines' operating percentage using the slider in the game.

What to build next

Development chain — what is worth building in parallel with or after this building.

Metal Mine — Just like in the mines—without power, production drops
Deuterium Power Plant — when the main power plant can't keep up

How it differs from similar buildings

To choose what to upgrade — see how this building compares to the alternatives.

Deuterium Power Plant

A thermoelectric power plant produces more energy but consumes deuterium. The power plant is the main one and incurs no costs.

Solar Satellite

Satellites provide solar energy at no cost, but they depend on the planet's temperature. They are effective on hot planets.

Particle Accelerator

The Collider provides energy, antimatter, and protection for the Moon, but it can only be built on the Moon and is very expensive.

Questions and answers

What is «Solar Power plant» in Xterium?
“Solar Power plant” — a building of the “Energy” category in Xterium, mines the resource energy, available from the start of the game, maximum level — 65, base production at level 1 — 20 units/hour.
What is the maximum level of the «Solar Power plant» building?
Maximum level — 65.
What increases production for the «Solar Power plant» building?
Permanent bonus sources: Scientist, Rare Elements, Production of energy. Senator specialization, temporary boosters from special offers, and alliance upgrades also have an effect.
Data updated: 2026-05-22 · Game version: 2.12.7 · Section: Encyclopedia / Buildings

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