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Payback period of solar panels for a private home Comment

by hvacrepair.blog


Payback period for solar panels for a private home Comment

Payback is the most important issue that worries future owners of solar panels. First of all, let us remind you of the tasks that installing your own solar power plant allows you to solve:

  • savings on electricity bills,
  • ensuring comfort and energy independence.

We can talk about the economic benefits of solar panels in the first case. If you want to save on electricity bills, choose a network-connected solar power plant (SPP), which works on the principle of mixing electricity generated by solar panels into your home single-phase (1P) or three-phase (3P) network.

This type of solar power plant consists of:

  • solar panels that convert solar energy into electrical energy, namely direct electric current,
  • network solar inverter, which converts direct electric current from the panels into the familiar alternating current with a voltage of ~220/230V or ~380V and mixing this energy into your home network,
  • DC protective equipment – ​​DC circuit breaker, surge protection device, fuses,
  • cables for connecting solar panels to the inverter,
  • mounting kit for installing an array of solar panels on a roof or ground structure.

SES

How does SES work?

Let’s say you have installed a network-connected solar power plant with a capacity of 2 kW. This means that the inverter power is 2 kW, and the array of solar panels consists of 7 pieces. 320 W each, i.e. the total power of the panels is 2240 W. Next, we will consider 2 options for electricity consumption.

  • Consumption is less than what SES produces

If the electricity consumption in the house is 1 kWh, and solar panels produce 1.8 kWh, then all consumption is covered by the sun, and there is even a surplus of 800 Wh. They can be sent to the city network. According to Decree of the Government of the Russian Federation No. 299 of March 2, 2021, owners of private houses and SMEs can sell excess electricity at the “Green Tariff”. To do this, you need to go through the technical procedure. connections with the installation of a bidirectional electricity meter. It is possible to reduce the energy production from the panels to the current level of consumption of the house, so that there is no surplus.

  • Consumption is more than SES produces

If the home’s consumption is 3 kWh, and the panels also generate 1.8 kWh, then all 1.8 kWh from the panels will go to the load, and the missing 1.2 kWh will come from the city network according to the electricity meter.

Solar battery for home

How to calculate the payback period of a solar power plant?

In order to calculate the payback period of solar panels, it is enough to know two indicators.

  • The cost of your solar power plant. This amount must include all costs for the purchase of equipment, delivery and installation.
  • Annual savings on electricity in rubles. To calculate it, multiply the annual output of the power plant (kWh) by the average tariff for electricity in the region (RUB/kWh).

Divide the cost of a solar power plant by the annual savings, and you will find out how many years it will take to install a solar power plant to pay for itself and start making you a profit. On average, the payback period for solar panels for a home is 8-10 years. Considering that the equipment lasts for 25-30 years, we can conclude that installing a solar power plant is beneficial.

Opportunities of REENERGO company

Don’t have time to understand the features of the device and the payback period of solar panels? Contact REENERGO specialists who will help you select equipment for solar power plants and tell you about backup power supply for a private home to ensure complete energy independence.

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