Powering your base is the transition from survival to dominance. Electricity drives automated defences, lighting, traps and quality of life. This guide covers every electrical component and how to build a network that does not brown out on horde night.
Most electricity guides tell you a generator is better than solar without saying by how much. These figures come straight out of blocks.xml in the V3.2 stable build, so they are what your server actually runs.
| Power source | What each slot adds | Bank maximum | Slot item |
|---|---|---|---|
| Generator Bank | 100 per engine | 12250 | Small Engine |
| Battery Bank | 50 per battery | 400 | Car Battery |
| Solar Bank | 30 per cell | 180 | Solar Cell |
A single small engine out-produces three solar cells, and a full solar bank tops out at 180 power, which is the figure that decides most base designs. The generator bank also holds 1000 fuel and returns 11250 output from it, so fuel is rarely the constraint; engines are.
| Component | Power required |
|---|---|
| Electric Wire Relay | 1 |
| Electric Timer Relay | 1, and it draws constantly |
| Electric Fence Post | 5 |
| Motion Sensor | 5 |
Relays are almost free, which is why splitting a circuit to keep runs tidy costs you nothing worth counting. Fence posts and sensors at 5 each are what actually add up: a full solar bank at 180 runs 36 fence posts and nothing else.
Why solar is so hard to get, in one line. The Solar Cell cannot be crafted and cannot be scrapped, it stacks to 1, it cannot be sold back to a trader, and it carries an economic value of 12000 against 32 for Electrical Parts. It is trader stock at the tier-3 electrical stage. Solar is not a mid-game choice you build toward, it is a late-game purchase you save for.
Verified on 18 September 2026 against the V3.2 stable distro our servers run, from Data/Config/blocks.xml, items.xml and Localization.csv. Display names are the game's own.
Every electrical system needs a power source. Here are your options:
| Property | Value |
|---|---|
| Power Output | 50W per engine (max 6 = 300W) |
| Fuel | Gas Can (1 gas = ~20 minutes) |
| Noise | High (attracts screamers) |
| Best For | Horde nights, high-wattage traps |
| Property | Value |
|---|---|
| Storage | 150W per battery (max 6 = 900W) |
| Output | Supplies stored power to connected devices |
| Noise | Silent |
| Best For | Sensors, lights, low-power devices 24/7 |
| Property | Value |
|---|---|
| Power Output | 30W per solar cell (max 6 = 180W) |
| Fuel | None (sunlight only) |
| Active Hours | 06:00 - 22:00 (daytime only) |
| Best For | Sustainable base power, charging batteries |
The Wire Tool is your primary way to connect electrical components.
| Component | Function | Wattage |
|---|---|---|
| Switch | Manual on/off control | 1W |
| Motion Sensor | Detects movement in cone | 5W |
| Trip Wire Post | Activates when wire is crossed | 3W |
| Pressure Plate | Activates when stepped on | 2W |
| Timer Relay | Pulses power at intervals | 5W |
| Component | Function | Wattage |
|---|---|---|
| Small Light | Basic illumination | 2W |
| Ceiling Light | Room lighting | 3W |
| Spotlight | Directional beam | 5W |
| Industrial Light | High-output area lighting | 10W |
| Trap | Damage | Wattage | Notes |
|---|---|---|---|
| Blade Trap | 20 per hit | 20W | Spinning blades, high durability |
| Dart Trap | 35 per dart | 10W | Requires Iron Darts as ammo |
| Electric Fence Post | Stun + 10 | 15W | Chains between posts, staggers zombies |
| SMG Auto Turret | Varies | 25W | Requires 9mm ammo, auto-targets |
| Shotgun Auto Turret | Varies | 25W | Requires shells, wide spread |
| Component | Function | Wattage |
|---|---|---|
| Speaker | Plays sound to attract zombies | 5W |
| Electric Fence | Stuns zombies crossing wire | 15W per post |
| Powered Door | Opens/closes electrically | 10W |
Generator Bank (1 engine)
├── Battery Bank (for overnight)
│ ├── Motion Sensor
│ ├── 4x Ceiling Lights (12W)
│ └── Speaker (for distractions)
└── Switch (manual control)
Generator Bank (4+ engines)
├── Battery Bank (backup buffer)
│ ├── Motion Sensors (trigger)
│ │ ├── Blade Trap x4 (80W)
│ │ ├── Electric Fence x2 (30W)
│ │ └── SMG Turret x2 (50W)
│ └── Spotlights x4 (20W)
└── Manual Switch (emergency shutoff)
Solar Bank (6 cells = 180W)
├── Battery Bank (6 batteries = 900W storage)
│ ├── All base lighting
│ ├── Motion sensors
│ └── Electric fences
└── Generator Bank (backup for horde nights)
Power Relays extend your wiring range without power loss. Place them every 15-20 blocks for long runs.
| Problem | Cause | Solution |
|---|---|---|
| Red wire (no power) | Source empty or off | Add fuel to generator, check battery charge |
| Yellow wire (low power) | Overloaded circuit | Reduce devices or add more power sources |
| Devices not activating | Sensor not triggered | Check sensor range and direction |
| Traps not firing | No ammo or power | Refill ammo (dart traps, turrets) |
Your electrical grid only runs while the world is loaded. On a 24/7 dedicated 7 Days to Die server, generators, batteries, and blade traps keep ticking even when every player has logged off, so your base defenses stay armed around the clock.