See what is happening.
Live power, stored energy and device health. Fresh readings, estimates and missing data stay distinct.
FTW · Public beta
Local energy.
Ready for AI.
A fast, local core for your home's energy. FTW brings solar, batteries and car charging together. Use it from your iPhone, the web, Home Assistant or an AI assistant.
Have an iPhone? Join the iOS beta on TestFlight
Runs at homeOpen sourceBuilt for people and agents
Real app screens · Simulated homes
01 / The energy core
One system.
Your choice of interface.
Your meter, solar, battery and charger each report their own readings. FTW reads them together, plans ahead and controls on the equipment's own network. The core runs on your hardware and keeps working when an app or assistant disconnects.
Work towards your goals.
Energyplan combines prices, solar, household forecasts and charging needs into one local plan.
Check the result.
Core checks commands against site and equipment limits, then checks the readings for the response.
02 / An energy primitive for AI
Your home energy.
In the conversation.
Ask why the battery is charging. Understand tonight's plan. Get help connecting your equipment. FTW gives an authorized assistant the context to answer.
The FTW plugin brings that access to ChatGPT. MCP gives agents a structured way to work with the core. You choose who gets access and can revoke it. Core checks every request and keeps control at home.
Explore FTW for ChatGPTChatGPT plugin preview · Public directory listing pending
A FEW THINGS TO ASK
- “Why is the battery charging now?”
- “What happened to our energy use today?”
- “Will the car be ready by morning?”
- “Help me set up FTW with my equipment.”
A core you can build on.
State, history, goals and plans through APIs and MCP. Connect your own agent or automation, with scoped access and Core's validation.
Agent-led setup and accessAssistant access is explicit. FTW Cloud and your assistant provider can read the data you grant them. How access and privacy work
03 / Built to feel immediate
Open the app.
There's your home.
The apps show saved readings straight away, then catch up with the box. Every reading keeps its age. Watch the flow, change a charging goal and see what FTW does next.
FTW FOR iPHONE · iOS 26+
A native app for everyday use.
Live energy, car charging and electricity prices. Check the plan, set a charging goal or choose Charge now. Keep prices close with widgets.
Get the iOS beta on TestFlightIncludes a simulated home to explore before you connect a box.
FTW WEBAPP · PHONE + COMPUTER
Your energy, in the browser.
Live flow, plans, history and access to your box. Install the webapp on your home screen and open it like an app. Pair it with FTW to use your own home's data.
Open the webapp and try the demoThe public demo uses simulated equipment. No box needed.
04 / Planning that stays local
The whole home.
Planned together.
Prices change. The car plugs in. The forecast changes. FTW updates the plan around your goals and the energy available.
- Charge the car towards the level and time you set.
- Plan battery use around prices, solar and household needs.
- Coordinate supported equipment from different brands.
Energyplan runs locally. Core checks each proposed plan before it reaches a device. Site limits and fresh meter readings govern control.
Check your equipment in the device catalog05 / Try the beta
Start where you are.
Explore a demo, run FTW inside Home Assistant or install it on your own Linux host. Then connect the apps and assistants you want to use.
Already running FTW? Follow the switch or update guide. The retired 2.x and 3.x lines receive no more updates.
Moving an older installation?
Keep a full backup and your old data. On a Raspberry Pi, keep the old SD card and use a second card. Guided transfer of old settings and history is not ready. Stop old Core and its autostart before another Core controls the same equipment. If an install refuses the old layout, follow the guide before trying another path.
Open code · Sourceful maintained
Use it. Adapt it.
Help make it better.
FTW is open-source software. Connect your own software, adapt Lua drivers and contribute a tested fix. Sourceful develops and maintains the project with the community.
FTW code uses AGPLv3 with the Energyplan permission. The separate Energyplan worker is licensed for private household use. Commercial worker use needs a Sourceful license. Licensing · Community and commercial support