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Domestic electrical storage systems: here are the advantages

Domestic electrical storage systems: here are the advantages



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The installation of a domestic electrical storage system (Residential Electrical Storage System REES) in a photovoltaic system produces annual savings for the end user of approximately 150 euros in the case of an incentivized system (fifth energy bill) and of approximately 170 euros in the case of a non-incentivized system. The estimate is by ANIE Energia.

What determines the savings? The benefit for the end user of a storage system domestic derives from an increase in self-consumption which leads to a reduction in the bill more than proportional to the reduction in revenue obtainable from the sale of the energy produced.

Existing and incentivized photovoltaic system in the home:

+ all-inclusive rate;

+ self-consumption premium;

- bill cost.

Annual budget: 330 euros.

Existing and incentivized photovoltaic system in the home + storage system:

+ all-inclusive rate;

+ self-consumption premium;

- bill cost.

Annual budget: 480 euros.

New photovoltaic system without incentives in the home:

+ all-inclusive rate;

+ self-consumption premium;

- bill cost.

Annual budget: -200 euros.

New non-incentivized photovoltaic system in the home + storage system:

+ all-inclusive rate;

+ self-consumption premium;

- bill cost.

Annual budget: -30 euros.

In addition to benefits for the end user, from the spread of storage systems there are benefits for the electrical system. ANIE Energia estimates that in a scenario where the penetration of RESS reached 5% of PV systems, savings of 117 million euros per year could be quantified on the electricity system. With a penetration of 20%, savings would rise to 538 million euros per year.

Then there are the indirect benefits that i storage systems domestic they offer the country, which cannot be directly quantified but can be identified in: greater diffusion of renewable energy sources; increase in available power; development of the electric mobility market; growth of the employment and development rate.

The spread of ESRs depends a lot on legislation. Currently, the law in Italy does not directly regulate domestic storage systems, but is evolving in the direction of attributing part of the management costs of renewable energy sources to renewable energy producers.

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