Return on investment
In 2014 are provided for the construction of photovoltaic power plants no subsidies or support in the form of subsidized the purchase of energy produced. Return photovoltaic power plants is therefore only possible to calculate from the value of saved electricity. In principle, one can say that in 2014 it pays to build photovoltaic power plants to large entities - companies that consume all the produces energy. Following table shows the return on investment for each model projects depending on the percentage of consumption of electricity. As interest are investing in equipment called wattrouter which is able to run sn electrical appliances, depending on the production of a photovoltaic system.
These calculations are approximate and may vary depending on the following input conditions.
The calculations also take into account the annual decline in production by 0.7% due to the aging of photovoltaic panels, operating costs (servicing, etc.) of 1% per annum of the price of the work.
Variant A:
Small house 1-phase installation, rate d02d - 4.63 CZK/kWh, annual consumption of 5 MWh
Ideal photovoltaic power plant is about 3 kWp.
Variant without wattrouter - price without VAT 117 500 CZK, private consumption is about 58%. Return is for 17 years.
Variant with wattrouter - price without VAT 136 000 CZK, private consumption is about 83%. Return is for 13 years.
Variant B:
Big house 3-phase installation, rate d55d - 3.16 CZK/kWh, annual consumption of 20MWh
Ideal photovoltaic power plant is about 9.6 kWp.
Variant without wattrouter - price without VAT 292 000 CZK, private consumption is about 75%. Return is for 15 years.
Variant with wattrouter - price without VAT 313 000 CZK, private consumption is about 93%. Return is for 12 years.
Variant C:
Company 3-phase installation, rate c45d - 3.22 CZK/kWh, annual consumption of 150MWh.
Ideal photovoltaic power plant is about 30-50 kWp.
Variant without wattrouter - price without VAT 1 200 000 CZK, private consumption is about 100%. Return is for 9 years.
Conditions of calculations:
The above calculations were designed for pitched roofs with a slope of 35 ° in Brno with zero deviation from the south. Under different conditions, the production of electricity is about change as shown below.
These calculations are approximate and must be converted to a particular offer.
If interested in a photovoltaic system, please fill out the form request and we will prepare the best offer according to your requirements.
Fig. Percentage annual irradiance according diversion from the south and the angle of inclination of photovoltaic panels (only at zero shadow side objects such as trees, chimneys, dormers or surrounding buildings and throughout the year)