When shelly beats tasmota and when it does not

When building a local-first smart home with Home Assistant, choosing the right integration is crucial. Two popular options are Shelly and Tasmota—both offer powerful capabilities but with distinct trade-offs. This article dives into when Shelly is the better choice and when Tasmota is more suitable, with practical advice for real-world use.

When Shelly Wins: Simplicity and Integration

Shelly devices are a great choice when you want simplicity, out-of-the-box integration, and minimal setup. Unlike Tasmota, which requires flashing firmware onto devices, Shelly devices are pre-flashed and ready to use. This makes them ideal for users who want to avoid the complexity of firmware flashing and device configuration.

For example, if you’re setting up a smart plug, the Shelly Plug-S is a solid choice. It connects to your Wi-Fi network, pairs with Home Assistant via the Shelly integration, and offers features like energy monitoring and remote control—all without needing to flash anything. This is a low-effort, high-reward scenario where Shelly shines.

Another area where Shelly excels is in Zigbee and Z-Wave integration. The Shelly Plus-1 Mini Gen3 is a great example of a device that supports both Zigbee and Z-Wave, making it a versatile hub for your smart home. If you’re using a Zigbee hub like the ConBee III or a Z-Wave hub like the Z-Wave ME RAZBerry 7 Pro, Shelly’s built-in support for these protocols can save you time and hassle.

Shelly also offers better support for Home Assistant compared to Tasmota in many cases. The Shelly Plus-2PM, for instance, is fully compatible with Home Assistant’s built-in integration and offers advanced features like scene control, automation, and multi-device grouping. This makes it a strong contender for users who want a smooth Home Assistant experience without diving into the complexities of Tasmota.

When Tasmota Shines: Flexibility and Customization

Tasmota, on the other hand, is the better pick when you need maximum flexibility, customization, and support for a wide range of devices. It’s an open-source firmware that can be flashed onto a variety of ESP8266 and ESP32-based devices, including Sonoff S31, Sonoff S40 Lite, and even SwitchBot Hub 2. This makes Tasmota ideal for users who want to repurpose existing hardware or support devices that aren’t natively supported by Shelly.

If you’re working with a Philips Hue Lightstrip Plus or a Philips Hue White A19, Tasmota can be a powerful alternative to the official Philips Hue integration. It allows for custom automation, scene control, and advanced scheduling that might not be available with the official app. For users who want more control over their lighting, Tasmota is the way to go.

Another area where Tasmota excels is in supporting legacy or niche devices. For example, the Third Reality Zigbee Water Sensor or the Frient Water Leak Detector might not have native support in Home Assistant, but with Tasmota, you can often find a way to integrate them. This is especially useful if you’re building a smart home from scratch and want to use Home Assistant as the central hub.

Tasmota also offers more granular control over device behavior. For instance, you can set up custom MQTT topics, define device-specific behaviors, and even create custom dashboards using Home Assistant UI. This level of customization is a big win for users who want to tailor their smart home experience to their specific needs.

When to Avoid Tasmota: Complexity and Reliability

Despite its flexibility, Tasmota is not always the best choice. One of the biggest downsides is the complexity of flashing firmware. If you’re not familiar with the process, it can be time-consuming and error-prone. Flashing firmware requires a working knowledge of ESP8266/ESP32, proper hardware, and careful attention to detail. For users who want a no-frills setup, this can be a major drawback.

Another issue with Tasmota is potential instability. While it’s generally reliable, some users have reported bugs or compatibility issues with certain devices. For example, the Sonoff ZBMini Extreme or the Sonoff ZBMini L2 might experience unexpected behavior when running Tasmota, especially if they’re part of a larger network with multiple devices.

In contrast, Shelly devices are pre-flashed and tested, which means they’re more stable and less prone to errors. This makes them a better choice for users who want a reliable, out-of-the-box solution without the risk of firmware-related issues.

When to Avoid Shelly: Limited Support and Cost

Shelly has its limitations, especially around support for non-ESP8266/ESP32 devices. While it supports Zigbee and Z-Wave, it doesn’t support Zigbee 3.0 or Z-Wave 1000 out of the box. If you’re using a Zigbee 3.0 device or a Z-Wave 1000 device, you’ll need to rely on a Zigbee 3.0 Coordinator or a Z-Wave 1000 Hub, which adds to the complexity and cost.

Additionally, Shelly devices can be more expensive than their Tasmota counterparts. For example, the Shelly Plus-1 Mini Gen3 is a great device, but it’s more costly than a Sonoff S31 or a Sonoff S40 Lite that can be flashed with Tasmota. If you’re on a tight budget, this could be a significant factor in your decision.

Quick Verdict

If you want simplicity, reliability, and out-of-the-box integration, Shelly is the way to go. It’s ideal for users who want to avoid the complexity of firmware flashing and focus on automation and control within Home Assistant.

If you need maximum flexibility, support for a wide range of devices, and custom control, Tasmota is the better choice. It’s perfect for users who are willing to invest time in setup and want to repurpose existing hardware.

In the end, the choice between Shelly and Tasmota depends on your specific needs, budget, and technical comfort level. Both have their place in a local-first smart home, and the right choice will depend on your goals and priorities.