Solar panels generate the most energy during the day, while most households tend to use most of their electricity in the evening. If there is insufficient load in the house, excess generation from the array will be exported to the grid. This is where an add on like a solar PV or immersion optimiser, such as the iBoost, comes in.
The iBoost monitors electricity export using a sensor attached between your main meter and consumer unit. If the sensor detects that the property is exporting electricity, the device diverts the excess power to the immersion heater in the hot water tank. This reduces the fuel required by the boiler, thereby cutting fuel costs.
If an electrical appliance is switched on in the property, the device will reduce the power diverted to the immersion. Electricity usage throughout the home is always given priority use of the energy generated by the PV array.
The device ensures you make the most of the energy generated by the PV array, even when you are out of the house. As long as your hot water tank has sufficient ‘capacity’ (which can be achieved by setting the normal hot water heating to come on after the sun has gone down) you should be able to use 100% of the electricity generated by your PV system.
We recommend the Solar iBoost to provide hot water via excess PV electricity. It is wireless so there are no cables to run.
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