A new draft Law on Renewable Energy Sources introduce feed-in tariffs for photovoltaics (Table 1). When mounting and joining a network installation, the local operator will assume the cost of bi-directional power meter. The difference between the energy produced and consumed will be subject to sale at a price tariffs.
For example, a photovoltaic system with a capacity of 10 kW per year produces about 9,000 kWh. With an average household consumption of 3,000 kWh / year, you can sell 6,000 kWh.
Savings due to the overlap of the energy costs per year for a household with photovoltaic installations:
0.6 zł x 3000 kWh = 1,800 zł
Gain on FIT:
1.3 zł x 6000 kWh = 7,800 zł
Total profit from the installation of photovoltaic = 9600 zł / year
With the above assumptions photovoltaic system (PV), depending on the size of the system and consumption of the household, will give return within 7-9 years.
In addition, you should consider the following factors: