Photovoltaics have become synonymous with savings in recent years. Companies are increasingly considering it – sometimes because they want to reduce costs, sometimes because of pressure for sustainability or greater energy independence. Generating your own electricity always sounds good, but it is also true that not everyone will find photovoltaics worthwhile.
Photovoltaics is not a universal solution. Practice and data show that it may not be worth it for everyone. On the contrary, some companies may overdo it instead of saving.
Therefore, the first question when considering photovoltaics should not be the parameters of the future electricity source. We always ask first how the company operates, and we have every good reason to do so.
The biggest mistake - the company does not know its consumption
Photovoltaic technology is now reliable and proven. The panels, inverters, and system controls all work without problems. However, the success of a project depends on data, not technology.
The key is to understand when a company actually consumes energy. Where a company's consumption overlaps with photovoltaic production is the main indicator of when the investment is worthwhile and when it is not. If the electricity produced is not consumed during the day, energy savings become a utopia.
That's why we work with detailed measurements of energy consumption throughout the day. We find out when there are peaks, when there are dips, and how consumption can be realistically influenced.
The reality of returns
The question of return on investment in photovoltaics is always relevant, but the answer is never one universal number. In practice, return is never based on a single variable. It includes the price of electricity, the amount of investment, and how efficiently the company uses the energy produced. The last factor is often decisive.
Today, the payback period typically ranges between seven and ten years. Without subsidies for photovoltaics, it is most often around eight years, but with state support, it can be significantly shorter.
But the details make the difference. Two companies with the same power plant can have completely different results. That's why we don't work with averages, but with a specific model for each client.
Companies and photovoltaics: the biggest mistakes and how to avoid them
The importance of timing
When designing photovoltaics, companies often focus on performance. Logically, they want “as much energy as possible.” But in practice, it is much more important when they use it.
Companies with day or two-shift operations have a natural advantage. Companies with two-shift operations, where consumption is spread out over the day, fare best. They can use the energy immediately. On the other hand, companies that operate in the evening or at night hit a limit – production and consumption simply don’t meet. This is where the biggest differences in returns arise.
If a company is unable to consume all the energy it produces, surpluses arise. These are fed into the grid, but at a significantly lower price.
The result is simple - every unused megawatt hour reduces the economic effect of the entire investment.
That's why we don't design power plants "as big as possible". We design them so that they make sense in real operation. The key is the balance between production and consumption. Companies often look at annual production, but don't consider when they need the energy. And that's a fundamental mistake.
Building and network reality
The design also includes things that are not visible at first glance: the load-bearing capacity of the roof, the condition of the electrical installation, or the possibility of connecting to the distribution network in a given location.
Not every building is ready for photovoltaics without modifications and not every location has the capacity for new sources. That is why a quality project begins with an analysis of the conditions, not with the design of panels.
The good news is that based on quality analysis, we can influence and change many things. Sometimes it is enough to adjust the operation, shift the production time, distribute consumption better. Other times it makes sense to replenish the battery storage and use the energy later. We had a client who started at five in the morning. After shifting to eight, energy use improved significantly.
It can be done without investment
Not every company wants to tie up its capital in the energy sector. For such cases, there are models where a partner provides the investment and the company purchases electricity under agreed terms. This is a long-term relationship that needs to be set up correctly, and then it can be very effective.
Photovoltaics make sense when it is built on data, real numbers and the right design. It is not enough to just want to save, you need to know.
We know where the limits are, where the reserves are, and what is worth it. And that is the difference between a project that just looks good and a project that actually works.
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