FTW
FTW: FTW coordinates home energy devices locally across solar, batteries, grid power and EV charging. Ranked #23 of 25 in Energy Management Software by our editors (6.6/10); pricing: Open source; best for open-source local energy coordination.
At a glance
- Editor score6.6 / 10
- PricingOpen source
- Best forOpen-source local energy coordination
- Paid fromFree
- Energy monitoringAdvanced
- Founded2022 · Kalmar, Sweden
- Facts checked22 Sep 2026
Where it wins
- Coordinates solar, batteries, grid power and EV charging in real time
- Plans around prices, weather, photovoltaic output, load and battery state
- Supports MQTT, HTTP, Modbus, OCPP, Home Assistant and Lua drivers
Where it doesn't
- Self-hosting requires Raspberry Pi or Linux hardware
- Device integration may require technical work with drivers and protocols
- Commercial deployment, maintenance and support are separate services
Our verdict on FTW
FTW is a local-first home energy management system from Sourceful Energy for households coordinating solar production, batteries, grid power and EV charging. It runs on Raspberry Pi or Linux hardware and provides a local web interface, energy history and telemetry storage. Planning accounts for electricity prices, weather, photovoltaic production, household load and battery state, making it suited to technically capable homeowners who want local control rather than a hosted energy dashboard.
Its strongest fit is the integration layer. FTW supports Home Assistant, MQTT, HTTP, Modbus, WebSocket, TCP, OCPP, CalDAV and Lua, with an HTTP API and Home Assistant MQTT discovery. OCPP 1.6J and 2.0.1 charger support extends the system into EV charging, while Lua-based hot-reloadable device drivers provide a path for adapting integrations. Safety controls include watchdogs, fuse limits and stale-meter protection, adding operational controls alongside energy planning. Buyers choosing FTW should expect to work within a Linux or Raspberry Pi environment and may need technical familiarity with local networking, device protocols and drivers.
FTW also stands out for coordinating several energy assets in one local system instead of focusing only on monitoring. Its forecasting inputs and local storage support planning based on changing conditions, while the web interface keeps access on the local network. The trade-off is that self-hosting remains part of the product model, and Sourceful Energy separates commercial deployment, integrations, relay access, maintenance and support from the community software. FTW suits users who value open-source control, local data handling and protocol flexibility. Those seeking a managed service with minimal infrastructure work should consider a different type of energy management product.
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FTW pricing
FTW fact sheet
| Free plan | Not verified |
|---|---|
| Paid from | Free |
| Energy monitoring | Advanced |
| Energy forecasting | Yes |
| Carbon tracking | Not verified |
| Utility data import | Automated |
| Data retention | Not verified |
| API access | Yes |
| Deployment | Self-hosted, Browser extension |
| Platforms | Web, Linux |
| Support | Community, Docs |
| Built for | Solo, Small business, Enterprise (editorial estimate) |
| Integrations | 9 integrations: Home Assistant, MQTT, HTTP, Modbus, WebSocket, TCP … |
| Pricing | Open source |
| Website | ftw.sourceful.energy |
| Facts checked | 22 Sep 2026 |
FTW integrations
FTW lists 9 integrations on its own site.
- Home Assistant
- MQTT
- HTTP
- Modbus
- WebSocket
- TCP
- OCPP
- CalDAV
- Lua
Alternatives to FTW
- ABB NsightA portfolio-focused platform for monitoring, reporting, forecasting, and energy optimization.9.2
- Johnson Controls OpenBlue Net ZeroA broad portfolio platform for utility data, emissions tracking, forecasting, and reporting.9.1
- Siemens Industrial Energy ManagementA broad industrial portfolio for monitoring, benchmarking, and optimizing energy across complex sites.9.0
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Reviewed by iTechGuides Editors · Editorial team · Updated Oct 2026
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