Photovoltaic energy sales: all the useful information to understand when it is convenient to sell the energy produced with a private photovoltaic system.
In the private sphere, it is not always easy to know when sell photovoltaic energy and when to use it for self-consumption. Fortunately, there are several sale ofenergy from photovoltaics able to meet the needs of any producer, even the most modest.
When it comes tosale of photovoltaic energythe possibilities available to producers are:
- exclusive self-consumption
- exchange on the spot
- online sale:
- self-consumption and sale of surplus
- exclusive sale
Exclusive self-consumption with accumulators
With exclusive self-consumption, the user decides to free himself from the electricity grid to fully satisfy the energy needs with the photovoltaic system. In this context it is necessary that the photovoltaic system is well sized according to the domestic electrical needs and above all that it has accumulators. Accumulators allow you to to storeenergy produced by the photovoltaic system in moments of non-use by the home network. The same energy stored by the accumulators will then be returned to the house during the night or when the system does not produce.
This solution is currentlynot recommendeddue to the high cost of accumulators.
Exchange on the spot
Exchange on the spot is not a real regimesale of photovoltaic energy! The on-site exchange uses the national electricity grid to replace the accumulator with an exchange scheme that provides for tariffs and reimbursements.
Thanks to a double meter, the photovoltaic energy produced and fed into the national electricity grid is constantly monitored. An economic value is assigned to each kWh fed into the national electricity grid which will come later"Liquidated"to the manufacturer.
“If I get paid for this energy, then will it mean that I'm selling it? "The issue is more complex because in times when there is no self-consumption (at night or when the photovoltaic system does not produce) and the user is forced to withdraw energy from the national electricity grid, he buys it at full rate while for its "sale" the rate is greatly reduced.
To give a practical example, with on-site exchange, the user draws energy from the national electricity grid by paying 0.24 euros for each kWh.
When the same user gives energy to the electricity grid, he will get about 0.16 kWh for each kWh entered. In other words, the exchange on the spot is convenient to save on the electricity bill but certainly not to make a profit from the sale of photovoltaics. The benefits of on-site exchange are clear:
- No waste of the energy produced in surplus.
- Consistent savings in the bill.
- Compatibility with tax deductions for renovation, therefore by installing a domestic photovoltaic system with an exchange regime on site, 50% of the purchase cost of solar panels and the cost of installation and commissioning can be deducted.
- Compatibility with the new single photovoltaic model, therefore a simpler bureaucratic procedure can be followed to obtain permits.
Disadvantage: with the exchange on the spot there is no profit / profit, but only a refund / saving on the expense in the bill.
Network transfer - sale of photovoltaic energy
The first true form ofsale of photovoltaic energyis provided with theonline sale. The online sale allows you tosell photovoltaic energyto GSE, using the Power Exchange or to a wholesaler. The sale can be exclusive (therefore self-consumption is not envisaged) or partial (where self-consumption is required).
There sale of photovoltaic energy with the direct transfer it can follow two channels, both militant in the so-calledfree energy market. We talk about the "Power Exchange" which sees the electricity market organized by GME as the "buyer" of energy (Energy Markets Manager) and the sale to a wholesaler who sees the stipulation of a bilateral contract where it will be possible to establish tariffs and sales prices for the energy produced. With the so-called "dedicated collection", however, the electricity from photovoltaics can be seen at the GSE. For all detailed information on thesale of photovoltaic energywe refer you to the article entitled "Photovoltaic eOnline sale ".
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