SıgBuddy Buy

For Sigenergy and GoodWe system owners

Your solar, at a glance.

SigBuddy sits on a shelf and shows what your system is doing this second — what the sun is making, what the house is drawing, where the battery is at. You stop unlocking your phone to find out.

See the three sizes How it works

Reads your Sigenergy or GoodWe system directly over your own wifi. No cloud account, no subscription, nothing leaving the house.

LIVE 1S BATT 18°C   INV 24°C 07:20 SOLAR 0.3kW EV 0.0kW BATTERY 18% OUT 0.9 kW • 1h 45m GRID 0.4kW IMPORT HOUSE 1.6kW SETTINGS 0.10 KWH TODAY

  • It reads your system, not a website

    SigBuddy talks to your Sigenergy or GoodWe system over your own wifi, using the Modbus connection built into it, and works out which one you have by itself. Your production figures never leave the house, and the display keeps working when the internet doesn't.

  • It shows your car charging

    Got a Sigenergy EV charger or a Tesla Wall Connector? Your car gets its own spot on the screen, with how much power it's drawing and when it's charging, right next to the house. A Sigenergy DC charger adds the car's own battery level. Tesla works with Sigenergy or GoodWe, on the 4.3- and 5-inch.

  • It tells you when the grid goes down

    If there's a power cut and your system switches to backup, the grid figure drops to zero and a flashing OFF GRID appears under it, easy to spot from across the room. When the grid is back it goes back to showing import and export.

  • Solar-only and off-grid are first-class setups

    No battery? No grid? Say so during setup and that leg disappears from the diagram entirely. You get a display drawn for the system you own, not one with a dead corner.

  • It tells you how long the battery will last

    When the battery is running the house, the time it has left appears beside it: OUT 1.3 kW • 6h 20m. It's worked out from what's left in the battery and the last 15 minutes of use, so boiling the kettle doesn't throw it. Most useful in a power cut. Works on Sigenergy and GoodWe.

  • It dims itself at night

    On the 4.3- and 5-inch, choose the hours and how dim, right down to fully dark, and the screen fades down overnight. A touch brings it straight back.

  • It sees your older solar too

    Kept the old inverter when the Sigenergy or GoodWe went in? The solar figure counts both. On a Sigenergy system the 4.3- and 5-inch also split them underneath, once both are producing, into SIG and EXT.

  • Fully upgradeable

    Software updates can be loaded locally and the units upgraded later to take advantage of any new features.

  • Nothing to sign into, ever

    No app to install, no account to make, no password to reset in two years. It's plug and play and fully self contained.

What's new · latest firmware 4.0.8

Tesla Wall Connector support, with Sigenergy or GoodWe, plus various bug fixes. See what's new

The 2.8-inch SigBuddy held in one hand, showing solar 4.3 kW, battery 100 percent, grid 3.3 kW and house 1.0 kW.
The 2.8-inch, in one hand. It takes up about as much bench as a coffee mug, and reads clearly from across a kitchen.
The 5-inch SigBuddy standing on a kitchen bench, showing solar 4.1 kW, battery 100 percent, grid 2.8 kW and house 1.3 kW.
The 5-inch: a large, clear screen you can read from anywhere in the room, whatever angle you happen to be standing at.
A 4.3-inch, start to finish: tap your network on the touchscreen and it finds your Sigenergy or GoodWe system on its own within about 60s.

Three sizes

Same readings. Pick the one that suits the room.

The 2.8-inch is for close range — a desk, a kitchen bench, the shelf by the door. The 4.3-inch reads across a room, and the 5-inch reads across a bigger one. Both of the larger two use an IPS panel — a clearer picture, and it stays readable from off to the side, so you are not stuck standing square on to it. All three show the same figures and follow a similar quick setup process.

The 2.8-inch, 4.3-inch and 5-inch SigBuddy side by side on a bench, smallest to largest, all three showing the same reading at 15:55 — solar 4.4 kW, battery 100 percent, 2.7 kW exporting to the grid and house 1.7 kW.
Left to right: 2.8-inch, 4.3-inch, 5-inch. One system, one moment, photographed together so the sizes are the only thing that differs.
The 2.8-inch SigBuddy in a black printed case and stand, showing solar 4.4 kW, battery 100 percent, grid 2.7 kW and house 1.7 kW.

2.8-inch

—

320 × 240, in a printed case and stand. A good entry level model to place on a desk.

  • Panel2.8" 320 × 240
  • Works withSigenergy or GoodWe
  • SetupPhone, via its own wifi
  • In the boxPrinted case and stand, USB-A to C cable
  • PowerUSB-C — plug not included
  • EV chargerSigenergy AC or DC: power and charging
Buy

The 4.3-inch SigBuddy in a black printed case and stand, showing solar 4.4 kW, battery 100 percent, 2.7 kW exporting to the grid and house 1.7 kW.

4.3-inch

—

800 × 480 on an IPS panel — nearly four times the pixels of the 2.8-inch, and it holds its picture from off to the side rather than washing out. Touchscreen, so setup and settings happen on the display itself.

  • Panel4.3" 800 × 480 IPS, touch
  • Works withSigenergy or GoodWe
  • SetupOn the screen itself
  • EV chargerSigenergy AC or DC, Tesla
  • In the boxPrinted case and stand, USB-A to C cable
  • PowerUSB-C — plug not included
Buy

The 5-inch SigBuddy in a black printed case and stand, showing solar 4.4 kW, battery 100 percent, grid 2.7 kW and house 1.7 kW.

5-inch

—

Premium 800 × 480 IPS touchscreen, on a bigger piece of glass and just as readable from an angle. The one to pick for a larger space.

  • Panel5" 800 × 480 IPS, touch
  • Works withSigenergy or GoodWe
  • SetupOn the screen itself
  • EV chargerSigenergy AC or DC, Tesla
  • In the boxPrinted case and stand, USB-A to C cable
  • PowerUSB-C — plug not included
Buy

New

Wall mount case option

Now available for the 4.3-inch and 5-inch versions — reach out for details or to add one to your order.

A SigBuddy display in the black wall mount case, fixed flat to a timber wall The wall mount case without the display, showing the vented back plate

New in firmware 4.0.0, every SigBuddy

Your EV charger, on the diagram

If you charge your car from a Sigenergy charger or a Tesla Wall Connector, it gets its own place on the screen: above the house, with the car's power as the big figure and what it's doing underneath.

  • Sigenergy AC charger: the car's power and whether it's charging. An AC charger can't see the car's battery, so there's no percentage.
  • Sigenergy DC charger Beta: the car's power, whether it's charging, the car's own battery percentage, and V2X when the car is running the house or exporting to the grid.
  • Tesla Wall Connector New: the car's power, whether it's charging, and the energy so far this session. Works with Sigenergy or GoodWe, on the 4.3- and 5-inch (firmware 4.0.8). The display finds the charger on your network, and works out by itself whether your system's meter sees it, so the house and grid figures stay right either way.
  • 2.8-inch, basic support: the car's power and whether it's charging, from either kind of Sigenergy charger. No battery percentage or V2X on the smaller screen.
SOLAR 9.4kW EV 7.2kW CHARGING CHARGING 62% BATTERY 96% IN 1.1 kW GRID 0.0kW HOUSE 1.1kW
AC: power and chargingDC: plus the car's battery level

Owners

My order arrived overnight thanks. It took me longer to walk to the letterbox than it did to set up the display… too easy!! 😄

My wife is rapt. She doesn’t carry her phone around 24/7 and gets tired of me telling her to check the solar.

Exactly as advertised — simple, effective, and it just works. 👍 That’s an easy 5/5 stars from me.

David

Thanks for the solar display. It is so simple but useful.

Ian

It’s excellent! Hope you sell plenty as it’s a great value for the price and a fabulous piece of kit!

Richard

Excellent addition to my Sigenergy system! Super fast delivery at an excellent price. Highly recommended 😁

Neil