With the Zonnedimmer app, you can have your solar panel installation controlled to generate extra income and contribute to a more stable electricity grid.
Zonnedimmer operates completely online (via the cloud), and we have agreements with all major inverter manufacturers for the control and monitoring of installations. This way, you don't need to make any modifications, and you can be sure that dimming your solar panels happens according to the manufacturer's guidelines, while maintaining warranty and support.
Most inverters are already connected to the internet and send monitoring data to the manufacturer, so you can track generation in the manufacturer's app.
Don't have access to your inverter manufacturer's app? Ask your installer (or previous owner/occupant if you recently moved) to send you the details.
You can now create an account and register your inverter on our website. We verify your address and authorize you as the owner of the installation with the inverter manufacturer. We also request permission to read data from your generation and to control the inverter. Your account is activated and you can start using our app immediately.
In the app settings, you choose whether your solar panels are allowed to be dimmed by your grid operator (to resolve congestion), your energy supplier (to lower your energy bill), and you can set dimming at negative prices if you have a dynamic contract.
We ensure that your solar panels are then automatically dimmed according to these settings, and we calculate the generation (in kWh) that has been dimmed so you receive the correct compensation.
Dimming takes place via specialized and well-secured cloud (API) environments of the inverter manufacturers. We send the task to temporarily reduce power (generation) output to your inverter, verify it's executed correctly, and ensure your inverter returns to full power when the task is complete. Meanwhile, you see exactly what's happening live in the app.
We do not have live insight into your meter data, so during grid congestion we dim all installations in the congestion area based on the same dimming percentage.
If your home uses a lot of electricity at that moment (for example for air conditioning or charging an electric car), this means you may import extra kWh from the grid during this dimming.
You receive fair compensation for this, because you contribute to solving congestion and therefore to a more stable electricity grid.
From June, you can order the Zonnedimmer P1 Dongel, which gives you live insight into your meter data and allows us to dim based on the power you are not using yourself at that moment. Keep an eye on our website for more information.
At times when your solar panels are dimmed, we calculate the energy (kWh) that was not generated due to the dimming. We do this based on your installation's historical production data and the local solar irradiance measured by KNMI. We account for the location/orientation of your solar panels and actual weather conditions in your area.
You choose yourself whether we are allowed to dim your solar panels on behalf of your grid operator or energy supplier in our app. The party that dims your solar panels pays compensation for it. We pay that compensation out to you.
Have you set up a dynamic contract with dimming at negative price? Then you save automatically during periods with a negative dynamic price, because we dim your solar panel installation at those times. You see this savings directly on your energy bill.
You can adjust the permission to dim and the settings for it at any time in our app. This way you always decide on behalf of whom we are allowed to dim your solar panels and for what compensation.
CloudWatts BV / Zonnedimmer is recognized as a Congestion Service Provider (CSP) by TenneT.
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