During the last Assembly condominium was not possible to make this assumption of energy-saving intervention, therefore, take advantage of the blog to disseminate a brief presentation of photo voltaic and potential economic benefits arising from the implementation of PV system for the almost total coverage of electricity consumption in our condominium common. The residence Nunziatella.
The hypothesis involves the construction of a plant on structures that could be used eg. a common parking areas, with funding of 80% of the total.
intervention whose useful life is 20 years and over will pay for itself in approx. ten years while the consumption of electricity condominium is almost completely compensated by the so-called "net metering"
addition to the economic benefit should not underestimate the environment contribution, according to estimates ENEL, represents a reduction of ca. 13 tons / year of CO 2
released into the environment.
Francesco De Maria
solar PV system
The tariffs are not the only advantage we can get by photovoltaic systems because the network operator will also have to climb or remunerate the kWh produced by the bill (P ≤ 20 kW) or paid (P> 20 kW).
payment schemes, in addition to tariffs.
power system rated criteria for reimbursement
electricity metering of electricity.
P ≤ 20 kW or
burden and / or sale of electricity to the grid 20 kW
< P ≤ 1000 kW Autoconsumo e/o cessione di energia elettrica alla rete
for photovoltaic systems with maximum power of 20 kW or apply the discipline of:
- on-site exchange (the so-called " net metering ") as provided by Resolution of the Authority for Electricity and Gas No 28/2006, or
- the supply of energy in the network produced.
In the first alternative, the new decree of February 2006 introduced a discrimination quite incomprehensible: the incentive rate is recognized "in the limit of the electricity made available to electric utilities in the person responsible." What does this mean? that the encouragement, choosing the exchange in place, it is recognized only to the energy produced and consumed on-site installation, namely that consumption (or made available by the exchange service in place under resolution 06/28), and not all the energy produced by the plant. The balance is made at year end and any excess production is considered a credit for the next three years, but is not eligible for compensation.
In the second case, the energy supply network, the energy is instead encouraged all those products, which can also be:
· placed throughout the network of distributor, or
· use all or part of the site, only when it is produced (can not be taken from the network at different times, because in that case is to be paid to the distributor as a normal sample taken from the network), while the excess consumption is fed into the network.
In conclusion, the benefits are twofold: the incentive rates that are paid for twenty years and on-site exchange / sale of energy that also extend beyond twenty years.
hypothesis of a photovoltaic system in Capalbio 20 kWp (about 160 square meters) for the production of electricity for the utilities of consumption common condo.
Hypothesis current consumption of utilities Monthly: 30,000 kWh / year;
turnkey cost (estimated cost per unit: 6.200 € / kWp + VAT): € 124,000 + 10% VAT = € 136,400;
Production in Central Italy (20 kWpx 1300 kWh / kWp) = 26,000 kWh per year;
Economic benefits from the incentive rate depending on the class and type of power plant of the same (assumed an integrated system on canopies for parking) and is equal to I = 26,000 kWh x € 0.46 / kWh = € 11,960 per year (not considering the reduction of 5% per year positive update ISTAT);
savings on the bill of ' energy consumed (in this case the power company will pay the kWh that is not produced by the PV 4000 kWh) pariah to 26,000 kWh x 0.18 € (average cost of electricity) = € 4,680 per year;
Estimated cost installation of a roof used as a parking structure in wood for up to 160 sqm: € 10,000 Total Annual Economic Benefit
= 11960 + 4680 = € 16,640 per year;
return time investment without the funding from bank = (136,400 +10,000) / 16,640 = ~ 8.8 years;
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