The off-the-shelf solution that we advise is the Shelly EM. In Home Assistant we have support for off-the-shelf CT clamp sensors and you can build your own. This makes it possible to calculate the energy usage. It digitalizes your gas/water/electricity meter display and provides its data in various ways.ĬT clamp sensors measure your energy usage by looking at the current passing through an electrical wire. Read the meter using an AI-on-the-edge-deviceĪI-on-the-edge-device is a project running on an ESP32-CAM and can be fully integrated into Home Assistant using the Home Assistant discovery functionality of MQTT. If you prefer to integrate it via MQTT, sml2mqtt is another open source option. ESPHome’s SML (Smart Message Language) is one way to integrate it. In countries like Germany, SML (Smart Message Language) is used typically. You put it on top of the activity LED of your electricity meter and it will bring your consumption into Home Assistant. We have developed Home Assistant Glow, an open source solution powered by ESPHome’s pulse meter sensor. By monitoring the time between flashes it’s possible to determine the energy consumption. For example, each flash is a 1/1000th kWh. Many meters, including older ones, have an LED that will flash whenever energy passes through it. We are not currently aware of a device that implements this which supports a local API and is compatible with Home Assistant. This is not “normal” Zigbee as implemented by Home Assistant but requires special certified hardware. This standard is available in some meters in the US, UK and Australia. The Zigbee Energy Profile is a wireless energy standard to provide real-time information about electricity usage. It is being sold on his website and the firmware is open source on GitHub. It’s an affordable P1 reader powered by ESPHome that will seamlessly integrate this information in Home Assistant. We have worked with creator Marcel Zuidwijk to develop SlimmeLezer+. A P1 reader can connect to this port and receive real-time information. The P1 port is a standardized port in the Netherlands, Belgium and Luxembourg. In certain countries these meters contain standardized ways of reading out the information locally. The best way to get this data is directly from your electricity meter that sits between your house and the grid. This data can be tracked in various ways. Home Assistant will need to know the amount of energy flowing through your meter. If you want to split energy usage into multiple tariffs, read this. Therefore Peak energy is more expensive then Off Peak energy. These periods of time are commonly referred to as Peak and Off Peak, exactly because they match periods of time where everyone is consuming energy (Peak) and periods of time where the energy is abundant but no one is using it (Off Peak). It has become popular for energy utilities to split the price of energy based on time of the day this is done in order to incentivise consumers to shift their power needs towards times where the grid has lower loads. Energy prices can differ based on a schedule or change according to market price. The energy usage is being tracked by your energy meter and is billed to you by your energy provider. Energy management is all about knowing how much energy you’re consuming, where it’s coming from and where it’s going.Īlmost all houses are connected to the electricity grid which provides the energy your home will need.
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