Български
How to turn your home into a green energy production powerhouse?
Potential clients often come to us with the question of whether photovoltaic systems are a good investment for a household. Our experience shows that it is entirely possible for a grid system on a roof or in a yard to become a profitable investment. The advantages of this type of investment are numerous – it increases the value of the property, looks good aesthetically, brings additional income to the family. All this with minimal need for maintenance.
An ideal example of this is a grid-connected photovoltaic system for investment purposes, which we designed and built on the roof and in the yard of a house in the town of Troyan. The entire amount of electricity produced by the plant is intended for sale to the local electricity distribution company (CEZ) at the preferential price set for this.
Components of the grid-connected solar system
The system consists of 96 pcs. monocrystalline photovoltaic panels SunRise 310Wp Mono PERC and 1 pc. Huawei SUN2000-33KTL grid-tie inverter. Monocrystalline panels are preferred over polycrystalline, especially for small installations, due to their higher efficiency. In this particular case, the efficiency of 18.78% allows for the deployment of greater power on a relatively smaller area. With the SunRise panels that we chose for this installation, we were able to deploy 30kWp on a total area of about 350m2. Although the law does not exclude the construction of the plant entirely on land, here we had to comply with a requirement of CEZ, i.e. some of the panels must be located on the roof of a building on the property. For this reason, the panels were distributed between the roof of a garage (16 pcs., 27m2) and a yard (80 pcs., 300m2).
Legal framework and legalization process
Understandably, our potential clients are intimidated by the bureaucratic process of legalizing such an investment. We assure them that we have been through this process hundreds of times and are fully prepared to take on the burden by preparing all the necessary documents on their behalf, including a project – part structural and part electrical. In this way, we are sure that the procedure will be completed in the most efficient and painless way for all parties.
The legal framework allows the investment in a photovoltaic power plant to be made both on behalf of a company and on behalf of an individual. In order to invest, households do not need to create a company. According to Art. 24, item 1 of the Renewable Energy Sources Act (ZEVI), the requirement is that the property where the construction is planned must be in an urbanized area and within its borders there must be a massive building connected to the electricity distribution network (as a consumer).
In the town of Troyan, we built a 30kWp grid-connected system, mounted on land, but not just any land. This site was one of the biggest challenges we faced. The terrain on which the photovoltaic panels were to be installed has a lateral slope of about 35-40°. Together with our partners, specialized in the construction of structures, we installed a piled structure, with two legs in a row. Unfortunately, the trees you see in the photos in front of the first string of panels had to be removed to avoid shading the system and to ensure its maximum efficient energy production. Although placing the panels on this terrain was not easy at all, the entire installation of the 30kWp system was completed in 5 days. Our standard deadlines for the implementation of a 30kWp are 1 week.
Income and return on investment
We predict that this system will produce 38MWh per year. Thanks to a purchase agreement concluded with CEZ, at a preferential price of 198.27 BGN per megawatt hour, the system will bring in income of about 7,500 BGN to the household. According to the current conditions for purchasing energy from photovoltaic plants up to 30kWp, the preferential price is valid until reaching 1348 hours of total annual operating time of the system (in this case 30kWp x 1348 hours = 40.44MWh) and until 31.12.2035. After the end of this period, the system will pass, like all larger photovoltaic plants at the moment, to the free energy trading market.
The initial investment in a 30kWp photovoltaic plant varies depending on the location of the property and the conditions for installing the system, but the average payback period is between 5 and 7 years. Commercial banks have already made sure of the security of this investment and in the last few years have been offering loans on good terms based on a purchase agreement with the electricity distribution company. This further facilitates households who wish to make an investment that will bring them additional income with minimal effort and maintenance costs.
The only costs that households need to consider when planning their finances are fees and taxes on additional income. The system requires no technical maintenance, other than regular cleaning of the panels to ensure their maximum possible efficiency.
Investing in photovoltaic systems for energy sales is attractive, but we realize that for many households it can seem like a big challenge. To date, we have helped hundreds of our clients go through the process and become energy producers, receiving monthly income from their investments.
If you are interested, we can answer all your technical and financial questions and assist you with every necessary step.
Contact us today to find out how you too can turn your home into a green energy powerhouse!
