FAQ- Frequently Asked Questions

Do you have questions about our electricity saving system?

Watt Analytics analyses, forecasts and controls electricity consumption in real time using artificial intelligence and machine learning technologies. In concrete terms, this enables us to achieve significant improvements:

Questions about the energy meter

You can ask any electrician in your area to install the meter. Appropriate installation instructions will be sent to you with the device, or you can download the instructions for the electricity consumption meter here. The work for the electrician should take about one hour.
In principle, you can install the meter yourself using the enclosed installation instructions for the electricity meter. However, we do not recommend this unless you are a trained electrician yourself and have appropriate experience with electrical installations.

The iWattMeter is the right choice if you want to measure and analyze your electricity consumption and you do not own a photovoltaic system.

The iWattController is the right meter for owners of a PV system. With the iWattController you can not only analyze your total electricity consumption, but also control your devices to optimize the self- consumption of your self-produced electricity.

If your iWattMeter is not sending data, it has lost the connection to your local Wi-Fi. Please open the Watt Analytics app and follow the instructions under "Update meter WLAN settings" in the menu item "Profile" and "Settings" to restore the WLAN connection. If this does not work, please send us a short email and we will get back to you for troubleshooting.
No, the iWattMeter is completely maintenance-free and is characterized by longevity due to its robust construction.
You can buy the meter on our homepage under Packages and Prices.
Yes, the software is available to every owner of a SmartPI as a download, including all the features offered by the Watt Analytics system, from teaching the devices to using the Watt Analytics web app and mobile app.
Congratulations on your new appartement! Yes, you can take the energy meter with you when you move. However, please have it removed and reinstalled by a professional electrician. In your new home, you may need to update the Wi-Fi settings in the Watt Analytics app after installing the meter. Simply follow the instructions in the app.

If the meter displays wrong or negative measurement data, this can have various reasons. In this case, check the following 3 points:

  1. check the direction of energy flow: are the current transformers installed in the direction of the arrow? The arrow must point from the energy supplier to the consumer. Twisting the terminals will lead to a negative measurement result.
  2. Is the current transformer cable correctly connected to the meter according to the color code?
  3. Check that the installation of the consumer itself is correct. This can be checked with a multimeter.
Here you will find an example of how to install the iWattMeter to measure a Tesla charging station: The installation of the charging station should look like this: Supply line to FI outlet = 3 phase+N Supply line to LSS = 2 phase+N iWattMeter Voltage Input = L1/L3/N If, for example, the outer conductor L2 is missing or the N conductor is connected instead of the L2 conductor by mistake, this will lead to a wrong or negative measurement result. The problem can be solved by correcting the installation and actually connecting the meter to L1/L3/N.

Questions about the Watt Analytics System

This question can be answered in two ways. How much electricity does Watt Analytics consume in your home and how much electricity does the company consume in total.

The power consumption of Watt Analytics in your home depends on the measuring device used. iWattMeter and iWattController are very economical measuring devices. The power consumption is approximately like that of an energy-saving lamp. Of course, you also must consider the power consumption of your WLAN and your mobile phone, but you will use that for other purposes anyway.

The total power consumption of Watt Analytics is not yet relevant in the current start-up phase. However, we are in the process of collecting relevant data with our cloud providers. As soon as we have reached a critical size, our next step will be to optimize our office infrastructure with Watt Analytics. You can read the corresponding field report on our homepage.

The power consumption is sampled and analyzed 4x per second. We show you the measurement data in the web app – on the dashboard of your user account – and in the mobile app.

We are constantly expanding our analyzer. Of course, it may be that it cannot detect a certain appliance because it behaves differently from everything we have analyzed so far. Please try the expert training mode in the Dashboard in the protected area of the homepage. Maybe this will help you. Otherwise, please send us an e-mail with your problem and we will take care of it.

We send a short data set to the Watt Analytics server 4 times per second. This has no impact on the performance of your Wi-Fi and is certainly covered by your basic free data allowance.

The Watt Analytics Community can only be effective if we learn from the data of others and make our data available to other members of the Watt Analytics Community. Transparency in how we handle your personal or measurement data is very important to us. Find out more on our data protection page.


Watt Analytics works with all popular iPhones and Android phones. You can use the Watt Analytics app on all current iPads and Android tablets. A standard internet browser is sufficient for operation on your PC.

In our experience, Watt Analytics can reveal interesting savings potential even in a single household. Naturally, the potential savings increase with the size of the household. Watt Analytics can be run in single-family and multi-family homes. Watt Analytics can also bring about meaningful optimizations for small and medium-sized enterprises.

We are currently still in the set-up phase. If you have a problem, please send us an e- mail. We will get back to you.

That is an interesting question. There are corresponding subsidy offers from the public sector on the relevant websites. However, we still must check these. If you yourself have experience with possible subsidies, we would of course be grateful for any information.

That is an interesting question. However, we still must check this. If you yourself have experience with tax deductibility on this topic, then we would of course be very grateful for any relevant information.

Questions about device recognition

Our measuring device can detect and analyze devices with a consumption of 5 watts or more. Devices with a consumption of less than 5 watts are no longer detected.

Basically, three categories of devices can be distinguished.

1st Category:

Devices that have switch-on and switch-off processes with a fixed number of watts can be taught-in well. This category of appliances accounts for about 80% of consumption. This includes the following appliances, among others:

LED and halogen lamps, light bulbs, kitchen appliances such as ovens, hobs, dishwashers, refrigerators, freezers, coffee makers, toasters, steam cookers, hoovers, washing machines, dryers, heating systems, circulation pumps, drills, circular saws, compressors, grinders, garage door openers.

2nd Category:

Appliances with a consumption between 5 and 15 watts. These devices can generally be taught in. Since these devices are usually very numerous in a household (e.g., light bulbs and chargers) and they hardly differ from each other in their active and reactive power, our system cannot always reliably assign the corresponding pattern recognition to the respective device. If two very similar devices are connected to the same phase, confusion may occur. If two very similar units differ by 10% or are connected to different phases, the unit recognition works. For an unambiguous assignment, a difference in consumption of approx. 10% is necessary so that our analyser can distinguish the units from each other.

This category of devices includes, among others:

NAS, DECT phones, printers, UPS, switches, receivers, SAT distributors, chargers for tablets and mobile phones, electric toothbrushes, various routers and gateways for the different applications, e.g., Fritz Box or Coqon heating control, doorbell system, radio (also old tube radio).

3rd Category:

Devices with dynamically fluctuating consumption. These devices can be taught-in, but false detection can occur if other devices with similar consumption are connected to the same phase. This appliance category accounts for approx. 10% of the consumption. These include, among others, kitchen appliances, PCs, monitors, and TVs.

You have to switch the device on and off 3 times and mark the consumption or confirm the device on the mobile app after switching it on. Watch our video on how to pair devices in the Watt Analytics app at the following Youtube-Link.

Yes, it makes sense to teach each device individually in the app so that there are no overlaps during pattern recognition. This increases your device recognition rate.

a, all units that have not yet been taught or cannot be recognized by the system are shown as "Unknown" in total.

Yes, that is possible. The 3 readers are intended for the 3 phases, but you can also attach the readers per circuit.

If you want to equip e.g., 9 circuits, you need 3 iWattMeters with 3 readers each. We do not currently offer any expansion modules for this.