How it works
Power limitation
Here you'll find answers to the most common questions about optimizing your energy usage and setting power limits for your home.
How does Power Limit Control work?
Ngenic Tune can now throttle your heat pump to help you avoid power peaks and thereby save money, now that more and more grid companies have introduced demand-based tariffs.
By measuring consumption in real time, Tune can detect whether the current hour's consumption risks exceeding your chosen limit and sends a signal to the pump to reduce output.
What do I need to do as a customer?
To activate Power Limit Control in your Tune app you need to configure two key parameters that form the foundation of your saving.
1. Set your power limit
You need to activate Power Limit Control in your Tune app and choose the power limit Tune should use in its calculations — i.e. the average power per hour you consider acceptable before you want your heat pump to be throttled.
2. Set active hours
The second thing you need to choose is which hours the power limit control should be active. This is governed by which hours your tariff applies, e.g. weekdays 07-19.
Why do I have to set the hours myself?
Since every grid company has chosen its own variant of demand tariffs, we have no way to automatically know which hours apply to your specific tariff, and therefore which hours it is worth throttling the pump.
Right now it is unclear how demand tariffs and regulations will evolve. To allow you to adapt to your own circumstances, we believe the best approach is for you to set the values that best help you keep your costs down.
How do I choose a good power limit?
A good limit is a balance between saving and comfort. Here are some tips for finding your optimal level.
Find the balance
A limit that is too low can affect comfort by throttling the pump too often, while a limit that is too high misses saving opportunities.
Look back
Analyse your historical consumption during the hours your tariff is active. Old electricity invoices give a good indication of power levels.
Adjust as needed
Don't be afraid to experiment. You can change your level in the app at any time if you want more aggressive control.
Worth knowing about limitations
Power limit control can never guarantee that you will not exceed your chosen limit, above all because it does not affect your other appliances — only the heat pump. Since Tune does not control your hot water production, your pump may still run to produce hot water even while the power limit control is throttling it due to high consumption.
Power limit control only works on an hourly basis and cannot handle cases where your grid company has chosen a quarter-hour demand tariff. The reason is that delays in communication with the pump — and the pump's own internal logic — make the system too slow to handle quarter-hour tariffs reliably.
Power limit control does not take into account whether you have already exceeded your chosen limit during the current month — for example if several large appliances ran simultaneously and the limit was breached even with the pump turned off. Some grid companies' tariffs are designed so that it makes no difference to your bill what you do for the rest of the month, as long as you stay below your peak so far. Tune will not account for this and will continue trying to stay below the limit you have set.
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