Intelligent Immersion Heaters for Solar PV Installations – Advantages and Disadvantages

The electricity produced by your photovoltaic panels is raised on into an inverter which converts the electricity to AC. This electricity is now readily available for use in the household. Any of this electricity which is not used is automatically fed back to the national grid. Immerse UK

An brilliant immersion system continually displays the inverter output. When it senses that excess electricity is being given back to the main grid it switches by using a concentration heater in the normal water cylinder, hence the explanation ‘intelligent’. 


A solar power thermal kit costs around? 1, 500 with possible further costs for assembly and perhaps even a replacement water cylinder. A basic intelligent immersion package could cost less than? two hundred.

Some models are placed up to consistently change the power supply to the immersion in order to match the electric power that would otherwise be exported.

Installing an smart immersion involves no plumbing related skills.

The wiring is straightforward as it mainly uses clamps around existing cables. Nevertheless , manufacturers always recommend by using a qualified electrical contractor.

Some intelligent immersions use wireless technology so that the switching of the immersion can be watched (or even controlled) from indoors.

Such a keep an eye on can usually be linked to a computer to permit downloading of historical data about electricity era and usage.

Some products can be used to change on so-called smart plugs to run other facilities (such as air conditioning) from the excess electricity.

Larger PV systems, 3 to 4 kWp, are more inclined to generate enough excess electricity for an smart system to work successfully.

The more complex kits cost anything up to? 700.

For a medium-sized PV system, 2 kWp say, in a household where electricity or gas is the key gas source, the savings could be quite modest. Including diverting 1 unit of electricity daily to drinking water heating, which is pretty optimistic, would save around? 50 a year. Pay-back time could be a few years. More expensive solid energy sources and propane gas would shorten pay-back time.

Intended for those systems which do not have variable power over the immersion heater, if the immersion heater is switched on at full power by an smart immersion they might consume more electricity than the extra from the PV solar panels. This could easily negate the financial saving. This is resolved in either of two ways. One is to fit a transformer to make the saut work on 1 kW. This kind of could add another? sixty to the charge. The other is to exchange the saut with a Solaplug saut, a conventional heater and solar coil in a single unit. These are around? 250 to buy.

Some software has an annually recurring expense of up to? 48 for remote monitoring.

Regardless of whether to invest in an intelligent immersion system unavoidably comes down to handling the financial outlay against projected savings on a person’s fuel bills. But if the advanced popular features of the more superior systems are tempting, the longer pay-back times might not subject a whole lot.

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