Watt Analytics GmbH

Optimize Your Photovoltaic System

and use your own electricity efficiently.

Increase your energy independence with your photovoltaic system and Watt Analytics.

Optimize photovoltaic self-consumption with the Watt Analytics IoT Hub

The Watt Analytics System with the Watt Analytics IoT Hub is an intelligent 360° complete solution for optimizing your photovoltaic system. By proactively controlling your devices or systems, you can use more of your own electricity from your PV system.

The specialty of the technology is that you don't need several apps and interfaces, as with many conventional energy management systems. Starting with just one app, you can easily control all devices via the Watt Analytics mobile or web application.

optimize the photovoltaic system and save money

Use solar energy intelligently through device control

In practice, the time when electricity is used hardly coincides with the time when solar energy is generated by your PV system. Excess, self-produced solar power is sold to the network operator at a very low price (usually between 0.1 cents and 0.3 cents per KWh), while more expensive electricity must be purchased when necessary and when the PV system is not currently running or too little solar power is generated. You buy electricity for about three times the price. So why not use more electricity when the photovoltaic system is generating electricity and save electricity at night or in bad weather?

The Watt Analytics software based on machine learning informs you when the best time is to draw your own electricity from the PV system. According to these recommendations, you can control your own consumption, reduce the consumption of expensive mains electricity and thus your electricity costs and at the same time increase your energy independence.


Optimize the phtovoltaic system and increase your own consumption

Increase self-consumption with the combination of device control and PV power storage

On average, the self-consumption share of a single-family household is between 25% and 30%. If you combine the device control with the use of PV energy storage, the self-consumption can be increased significantly, typically doubled.

This is illustrated by the application example on this graphic (Source: Fraunhofer Institut, 2020). In a single-family house with an annual electricity consumption of 4,700 kWh and an average PV power of 5 kWp, the proportion of self-consumption is on average 20% to 40%. With the use of PV storage systems, the proportion of self-consumption can be increased by 20% to 40%. In combination with the Watt Analytics device control, you can achieve a share of 50% to 70%. The Watt Analytics System accesses your consumption data and is able to give you the information about which battery capacity brings you the best return on investment (ROI).

Typical areas of application for Watt Analytics PV optimization

Device control:

Your devices are controlled by the Watt Analytics IoT Hub, which is connected with plugs and relays or with the integration of a smart home system, e.g. Loxone.

photovoltaic system optimize heating

Fully or semi-automatically control devices for heating and cooling such as electrical heating, heat pumps or air conditioning so that these devices are activated when PV power is available.

photovoltaic system optimize washing machine

Dishwasher, tumble dryer or washing machine can be controlled in such a way that a preprogrammed program is started when PV power is available.

photovoltaic system optimize water

Receive fully automated control commands for your hot water tank. This can e.g. be heated to 80 degrees with PV electricity, whereby the Watt Analytics System ensures that the temperature is kept at at least 60 degrees.

photovoltaic system optimize swimming pool heating

Let the Watt Analytics System automatically switch on your swimming pool heating or circulation pump when solar power is being produced or a minimum number of hours per day has to be achieved.

photovoltaic system optimize electric charging station

Charge your electric car with excess solar power, when the photovoltaic system is currently producing electricity.

Further areas of application:

photovoltaic systems optimize areas of application
  • Proactively control switching processes (switching devices on and off) via plugs & relays for remote control (e.g. remote control of the heating of the weekend house or second home).
  • Find the right dimensioning of your PV system through real-time simulation.
  • Determine the economically sensible limit for the use of storage media (batteries).
  • Control device access for child safety (e.g. for oven, stove, heating, e-charging station, etc.)

Watt Analytics technology and its components

The iWattMeter power meter, the Watt Analytics IoT Hub, analysis software as well as control relays and plugs are the components of the Watt Analytics energy management system for optimizing your photovoltaic system. The IoT hub is the control computer and generates corresponding commands for device control. With the help of the machine learning-based Watt Analytics software, the system is able to continuously learn and improve itself.

optimize photovoltaic system watt analytics iot hub

The Watt Analytics IoT Hub

The Watt Analytics IoT Hub is the intelligent heart of PV optimization. All information from the sensors and control units comes together here. It is also connected to the mobile app and the web application and enables consumers to be controlled conveniently and reliably so that the self-consumption of PV production is optimized.

  • Model: Strato Pi Base 3B+
  • Integration: LAN, WiFi, RS485
  • Features: RasPi 3B+, 16 GB
optimize photovoltaic system iono uno and wifi

Iono Arduino Uno or WiFi

The Iono Arduino Uno or WiFi is used to control up to 6 single-phase or 2 three-phase consumers with a load of max. 16 amps per phase. It is mounted on a top-hat rail in the fuse box and therefore suitable for consumers who have a direct feed line from the fuse box.

The Iono Arduino Uno is coupled to the IoT Hub via the RS485 integration and is suitable for industrial applications with strong interference. A direct cable connection to the IoT Hub is required, which can be up to 100 meters long.

The Arduino WiFi is coupled to the IoT Hub via WiFi and is therefore suitable for those scenarios where a reliable WiFi connection is available. This can also be switched over in several phases.

optimize photovoltaic system shelly plug s

Shelly Plug S

Shelly Plug S is an intelligent and compact adapter and very easy to install. It can be used for consumers that are connected to a socket and switch outputs of up to 10 amps. The integration is made via WiFi.

optimize photovoltaic system shelly plug

Shelly Plug

The Shelly Plug basically has the same functions as the Shelly Plug S and differs in the switchable power. This intelligent adapter plug is used for consumers that are connected to a socket and can switch outputs of up to 16 amps.

optimize photovoltaic system shelly 1pm

Shelly 1PM

The Shelly 1PM is used for loads up to 16 amps that are connected to a wall socket. The design is so small that the Shelly 1PM can be built into the socket. It can also be installed in the fuse box, provided that a consumer has a direct feed line from the fuse box.

optimize photovoltaic system phoenix eem

Phoenix EEM

The Phoenix EEM is a high-resolution watt meter for large loads. In contrast to the iWattMeter, it offers a sampling rate of 10 Hz and supports loads from 50 to 1500 amps and 690 volts. The Phoenix EEM is connected to the IoT Hub via Ethernet.

  • Model: EEM-MB370 -2907954 (TBC)
  • Integration: LAN, ModBus/TCP
  • Features: 10 Hz power measurement, 0,2% precision, 690V, 3 Phase