LAN cable gives the best result, and that doesn't change. But not every home can be cabled: a rental where drilling isn't allowed, a house with a sealed ceiling, or an upper floor whose route is already tiled over.
For those situations there are several middle paths. Each has compromises worth knowing before you buy.
Powerline: data over electrical wiring
How it works: one adapter plugs in near the router and connects with a short LAN cable. A second adapter plugs in at the destination room. Data travels through the home's electrical wiring as a high-frequency signal riding on the mains.
When it works well
- Both sockets are on the same breaker circuit
- The electrical installation is relatively new and tidy
- The distance between sockets is under 50 metres following the cable route, not a straight line
When it disappoints
- Older homes with many cable joints
- The two points are on different breaker circuits, the signal has to cross the panel, and often fails
- Plugged into a power strip rather than directly into a wall socket
- High-draw appliances on the same circuit, such as water pumps or air conditioners
Don't plug into a power strip or stabiliser. Voltage stabilisers and some filtered strips actively filter out the powerline signal. The adapter must go straight into a wall socket.
About the numbers on the box
The packaging says 600, 1000, or 1200 Mbps. Those are the theoretical sum of all paths under laboratory conditions. In an ordinary home, a reasonable result is 60–200 Mbps.
Still enough for 4K streaming and work. But if you buy based on the number 1200 and expect half of it, disappointment is almost certain.
MoCA: data over TV aerial cable
If your home has coaxial cabling for cable TV or satellite, MoCA uses it to carry data. The principle is similar to powerline, but the medium is far better, coaxial cable is designed for high-frequency signals.
The result is much more stable: 300–900 Mbps is normal, with latency close to LAN cable.
The obstacle in Indonesia is availability. MoCA equipment isn't commonly sold, and not every home has adequate coaxial wiring. If your home happens to have coax to every room, it's an option worth seeking out.
Wireless mesh
A mesh system uses several units talking to each other over the air. One connects to the router, the rest extend coverage.
Its advantages: easiest to install, one network name, seamless roaming between units.
Its drawback: every wireless hop cuts capacity. A second unit receiving and forwarding on the same radio loses roughly half its speed. Tri-band systems reduce this by providing a dedicated radio for unit-to-unit communication.
The full comparison is in the guide to mesh, repeaters, and access points.
Quick comparison
| Method | Real speed | Stability | Installation difficulty |
|---|---|---|---|
| LAN cable | Matches the port | Best | Needs installation |
| MoCA | 300–900 Mbps | Very good | Needs coax runs |
| Tri-band mesh | 150–400 Mbps | Good | Easy |
| Powerline | 60–200 Mbps | Depends on wiring | Easy |
| Dual-band mesh | 50–150 Mbps | Adequate | Easy |
| Repeater | Half the source | Adequate | Easiest |
Choosing based on your constraint
Upper floor, reinforced concrete. Wi-Fi signals struggle most with concrete floors. Powerline often wins here because it doesn't rely on propagation through air.
Long single-storey home, ordinary brick walls. Mesh is usually enough and easier to install.
A rental where drilling isn't allowed. Powerline or mesh. Both can be taken with you when the lease ends.
Need low latency for gaming. LAN cable, or MoCA if available. Powerline and mesh add jitter that's noticeable while playing.
Combining approaches
An approach that often gives the best result: use powerline as the data path upstairs, then install an access point at the far end.
This way, the wireless hop happens only once, from the access point to the device. The journey from router to upstairs travels through electrical wiring, not air. The result is more stable than pure wireless mesh in a home with thick walls.
Some powerline adapters already include Wi-Fi in their second unit, so no separate access point is needed.
Before you buy
Powerline is one of the network devices whose results are hardest to predict. Two homes of the same size can give wildly different results, and there's no way to know but to try.
Hence one practical piece of advice: buy from somewhere that accepts returns. Test in the first few days by copying large files and running a speed test from the destination room. If the result is below 50 Mbps, your home's electrical wiring is probably unsuitable, and no brand will fix it.
Frequently asked questions
Does powerline work in every home?
No. The result depends heavily on the electrical wiring. If the two sockets are on different breaker circuits, speed can fall sharply or fail to connect at all. Buy from a seller who accepts returns if it doesn't suit.
What's the real-world speed of powerline?
Figures on the box like 1200 Mbps are the theoretical total across all paths. Real speed in an ordinary home is generally 60–200 Mbps. That's still adequate for streaming and work, but far below the packaging's promise.
Does powerline interfere with other devices?
Powerline sends radio-frequency signals through electrical wiring, and in some cases interferes with shortwave radio receivers. For ordinary household devices, the interference isn't noticeable.
Is powerline or mesh Wi-Fi better?
If the obstacle is thick walls or distance between floors, powerline is often more reliable because it doesn't travel through air. If the home is relatively open and the obstacle is only distance, mesh is usually better and easier to install.
