Photovolt industry

When they talk aboutphotovolt industry, many immediately imagine endless fields of panels somewhere in California or China. But reality, especially in our conditions, often turns out to be much more prosaic and complex. The main mistake is to think that it is simply a matter of buying and installing panels. In fact, this is a whole complex of problems: from choosing equipment that will withstand our winters, to integrating into existing, often outdated, energy networks. And the most important thing is the economics of the project, which should come together not on paper, but in real operation, taking into account all local tariffs, losses and, let’s be honest, bureaucratic delays.

Equipment: not only roof panels

Look, everyone is chasing the efficiency of panels, and rightly so. But people often forget about the balance of the system. You can install the most efficient modules, but if the inverter is chosen incorrectly or the cables are of the wrong cross-section, all the advantages come to naught. I have seen projects where, due to the desire to save on hardware, they lost up to 15% of output in the first year. This is especially true for industrial facilities where the loads are unstable.

By the way, about industry. This often requires non-standard solutions. For example, for power supply to remote quarries or production sites. Here you can no longer get by with just a set from a catalog. It is necessary to take into account vibration, dust, temperature changes. Sometimes it is necessary to combine photovoltaics with diesel generators or, more interestingly, with energy storage systems. But the latter are a separate headache in terms of cost and maintenance.

In this context, sometimes you pay attention to the experience of related industries. For example, takeLONGI Corporation (https://www.ljmagnet.ru). A company that has been developing and producing mining equipment since 1993. Their experience in creating reliable equipment for tough conditions - and their Fushun plant produces thousands of units per year - is invaluable. Not in terms of panel production, of course, but in the approach to engineering, to ensuring uninterrupted operation in a complex environment. This is the very practical background that purely 'solar' companies often lack.

Network integration: theory and practice

The biggest illusion is that you 'plug it in and forget it'. The reality is that local network companies are not always happy to have such “guests” in their infrastructure. Specifications can be drawn up in such a way that to fulfill them means doubling the project budget. Especially when it comes to releasing surplus into the network. The approval procedure can take months.

We had experience in one of the warehouses. The project is beautiful, the calculations are perfect. But we had to completely change the design of the connection point due to 'insufficient transformer power' at the neighboring substation. I had to do an examination at my own expense and prove that there was enough power. We won, but lost six months. And this, mind you, is not an isolated case.

Therefore, now we always include in the plan not only the technical, but also the 'network' stage, with the involvement of local specialists who know the ins and outs. Sometimes it’s easier and cheaper to immediately offer the network company to upgrade a node at your own expense than to wait for their turn for years. Bitter, but practical experience.

Economics: when payback is not the main thing

Everyone considers the payback period. This is sacred. But inphotovolt industryThere are projects where direct economics are not paramount. For example, for remote sites where running power lines is more expensive than installing an autonomous solar power plant with a backup generator. Or for companies for which the image of a green company or energy independence is more important, especially in light of recent events.

But even in standard cases, calculations can be tricky. They set the average insolation for the region, and specifically at this site, due to neighboring buildings or haze from production, it is 10% lower. They set standard degradation of the panels, but they degraded faster due to defects or poor-quality installation. All these interests eventually eat up your profits.

Therefore, now we insist on pre-project monitoring - installing a weather station for at least a couple of months to understand the real picture. And be sure to study the experience of our neighbors, if there are any. Once this saved us from using a specific model of inverters, which in our climate failed en masse in the third year. We saved the client a lot of nerves and money.

Maintenance: what the brochures don't cover

Selling the station is half the battle. Who will serve it and how? Clean panels from snow, dust, bird droppings? Replace failed components? Monitor production? Often clients, especially small ones, are not prepared for these costs and hassles. And without maintenance, efficiency drops catastrophically.

I saw a station on the roof of a logistics center. The panels were covered with a thick layer of dust from the nearby road, plus a tree grew below, which began to provide shade. Output fell 40% in two years. And all because the service contract was not concluded, and the client did not have its own specialists.

Hence the conclusion: any project must include a clear maintenance plan and, preferably, a contract for its implementation. Or training of customer personnel. This is no less important than the installation itself. Ideally, the contractor has its own service teams, like large industrial players. Returning to the exampleLONGI Corporation— their success is largely built not only on production, but also on the full cycle of support for their complex mining equipment. The same approach is needed in photovoltaics.

Looking to the Future: Where the Industry is Heading

Nowadays there is a lot of talk about digitalization, smart networks, and hybrid systems. This is definitely the future. But in our realities, the implementation of these technologies depends on two factors: cost and personnel. Complex control systems require complex and expensive software, and most importantly, specialists who can work with it. Where can I get them?

It seems that the way is to simplify and adapt. Do not implement the most sophisticated solutions, but look for reliable, perhaps slightly less effective, but understandable and maintainable solutions. And at the same time train your specialists. It might make sense to learn from the engineering giants, where a 140,000 m2 plant like LONGI employs more than 1,200 people, most of them engineers and technicians. Their system of training and adaptation of personnel for specific high-tech production is a ready-made recipe for training specialists to service complex energy complexes.

Sophotovolt industryWith us, it’s not about high technology from magazines. This is about concrete work for foundations, about approvals in offices, about finding a reliable cable and training an electrician who has never worked with inverters. This is slow, painstaking work, brick by brick. But when you see how an object into which you have invested so much effort consistently produces current for years and saves money for the owner, you understand that it is worth it. Albeit without loud words about saving the planet, but simply as good, competent engineering work.