April 5, 2022

How long does it take to heat up the thermal tank?

my-PV GmbH

Our "Support" section offers many useful practical tips that will help you to install and commission our solutions.


Have you ever wondered how long it takes to heat up the heat storage tank?

This depends primarily on the solar radiation, but also on the heat that is extracted from the storage tank during the heating process by the withdrawal of hot water or by the heating system.

Nevertheless, a theoretical consideration can be made assuming constant conditions. In order to heat 1 liter of water by 1 degree, an amount of energy equal to 1.16 Wh is required. For example, a storage tank with 300 liters heated from 10 °C to 60 °C would be able to store 17.4 kWh of energy. To accommodate this energy in the storage tank with a constant heating power of 2 kW would take 8.5 hours. 

For a more practical, year-round consideration of the system, a check with the my-PV Power-Coach is recommended.


Our "Support" section offers many useful practical tips that will help you install and commission our solutions.

Furthermore, you will learn about all the most important innovations of my-PV products.



my-PV GmbH
Betriebsstraße 12
A-4523 Neuzeug

+43 7259 39328

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About us


We at my-PV get more out of photovoltaics than just electricity, we move your building technology into the future. Use your solar power yourself instead of feeding it into the public grid: Electricity, hot water, heating and charging options for your e-car. With our products, you can use your self-generated photovoltaic electricity for your own needs without any detours. This way, you save costs in the long term and act environmentally friendly!



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