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    Home»Solar»Common misconceptions about residential PV – pv magazine International
    Solar

    Common misconceptions about residential PV – pv magazine International

    By March 17, 2023No Comments4 Mins Read
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    Increasingly more individuals wish to put money into PV arrays and battery storage methods. Nevertheless, there are some myths that may result in disappointment amongst clients, in response to a client affiliation in Germany.

    March 17, 2023 Sandra Enckhardt

    From pv journal Germany

    Family demand for rooftop PV methods and residential batteries continues to develop. To fulfill the expectations of dwelling homeowners, the Verbraucherzentrale NRW – a German client affiliation – is attempting to make clear the mistaken expectations about PV installations that frustrate prosumers.

    “You will need to know the non-public objectives of utilizing photovoltaics after which to study extra. This manner, disappointments may be prevented and solar energy can be utilized successfully,” mentioned Sören Demandt, a digital vitality switch analyst for Verbraucherzentrale NRW.

    The primary false impression is promising those that they are often self-sufficient with PV methods and storage methods. This isn’t true, as a result of PV methods and residential storage options can solely cowl a sure proportion of the annual electrical energy provide for households.

    The diploma of self-sufficiency that may be achieved is between 25% and 90%, relying on the extent of electrical energy consumption and if storage has been put in. Particularly within the winter months, the quantity of solar energy that may be produced is much from sufficient, so it’s obligatory to buy grid energy, mentioned Demandt. Full self-sufficiency can solely be achieved with extra seasonal storage, akin to hydrogen.

    “Nevertheless, that’s technically advanced and hardly makes financial sense for a residential unit,” Demandt mentioned.

    One other false impression issues the assumption {that a} PV system is simply helpful together with a battery. Some owners appear to imagine that feeding solar energy into the grid just isn’t a financially enticing possibility.

    “A photovoltaic system is financially viable, even with out storage,” Demandt mentioned. “If the set up of a battery along with the photovoltaic system is possible, it is determined by a number of elements – primarily, the consumption profile of a home and the price of electrical energy.”

    Residence homeowners ought to due to this fact test their stage of self-consumption with out saving. They’ll evaluate the upper stage of self-consumption via battery storage with the precise value of electrical energy.

    Verbraucherzentrale NRW additionally rejects the concept south-facing roofs are higher for PV methods than east-west dealing with roofs. It isn’t solely about producing as a lot solar energy as attainable, however producing electrical energy when it’s wanted. The annual yield of a PV system on an east-west roof is simply about 80% in comparison with a south-facing roof. Nevertheless, the yield from photo voltaic methods on east-west roofs may be unfold all through the day, for the reason that methods nonetheless get a number of solar within the morning and night.

    Many individuals with out roofs for PV installations usually contemplate investments in plug-in photo voltaic units. It may be connected to balconies or positioned in gardens. Nevertheless, if tenants are hoping to energy family home equipment like espresso machines, they could be disillusioned.

    “These panels are significantly appropriate for masking the family baseload,” explains Demandt. “Electrical energy is used instantly – for instance, for a phone, an web router, or an alarm clock radio.”

    If extra energy is required, it is going to be provided to the grid. That is the case, for instance, with a espresso machine that momentarily requires about 2,000 W to warmth water. Balcony PV modules alone don’t obtain this, in response to the Verbraucherzentrale NRW.

    This content material is protected by copyright and is probably not reused. If you wish to cooperate with us and wish to reuse a few of our content material, please contact: editors@pv-magazine.com.

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