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      • Solar power plant construction cost

      Solar power plant construction cost

      Solar power plant construction cost

      ESFC Investment Group offers long-term loans covering up to 90% of the construction cost of solar power plants and related infrastructure.

      ✓ Project finance and investment lending from ESFC Investment Group:

      • From €50 million and more.
      • Investments up to 90% of the project cost.
      • Loan term from 10 to 20 years.

      To consider the issue of financing your project, send us the completed application form and project presentation by e-mail.

      Read more...
      The construction cost of solar power plants depends on several factors such as location, size of the plant, type of solar panel technology used, and installation costs.

      For instance, a small photovoltaic autonomous power plant might cost around $1-2 million, while large utility-scale plant could could cost several hundreds of millions.

      It's important to note that the initial construction costs are only part of this investment equation; the cost of maintenance, operation, and eventual decommissioning should be considered when evaluating the overall cost of a solar power plant.

      What elements make up the cost of a solar power plant?

      To determine the costs of a photovoltaic farm, it is first important to identify the factors that affect them.

      The initiators of a solar energy project should clearly understand what the investment process looks like and how much work needs to be done in order for this type of project to work properly and bring long-term profit. Naturally, the process of building a solar power plant, like any construction investment, consists of the so-called design part and the execution part.

      The cost of building a solar power plant depends on the type of power plant (photovoltaic or CSP), the installed capacity and the quality of the components used.

      A typical investment process consists of 3 stages, among which the following can be distinguished:

      1. Permitting and preparation of technical documentation.

      The engineering stage consists in the selection of the type and installed capacity of the power plant, the choice of construction method and the selection of appropriate equipment. The cost of permitting and engineering services varies from a few hundred thousand euros to several million euros for a large well-executed project with a properly carried out technical analysis, determination of the connection capacity, and many others.

      2. Procurement of photovoltaic panels, mounting elements and electrical equipment.

      The price of PV panels varies depending on the manufacturer, performance or warranty. To ensure the autonomous operation of a power plant (power supply to an industrial consumer), a significant part of the budget will be spent on batteries, the price of which increases sharply with their capacity and quality. An additional cost will be the purchase of battery charging controllers. In addition, the installation must include robust mounting hardware, overcurrent protection, miles of wiring, remote monitoring sensors, and expensive computer systems.

      3. Construction work and installation.

      Both general construction works and the direct installation of a solar power plant should be carried out by specially trained teams of professionals with relevant experience. The final cost depends on the characteristics of a particular facility, the complexity of preparing the land and its remoteness from transport hubs and roads. The place where the panels will be installed is also of great importance. Thus, we are talking about costs amounting to hundreds of thousands of euros for each megawatt of installed capacity.

      Construction costs in the case of a traditional photovoltaic power plant are divided by some experts into so-called direct and indirect costs, as shown in the table below.

      This classification is conditional and can be used to better understand the types of costs expected by investors / owners of the project's PV during the construction process.

      Table: Main cost elements of a 1MW photovoltaic farm.

      Direct costs (90-95%)
      Indirect costs (5-10%)
      PV modules (40-45%) Permitting
      Inverters (6-10%) Engineering project
      Metal load-bearing structures (15-17%) Financial modeling
      DC and AC cable lines (5-6%) Geodetic services
      Electrical protective equipment (1-2%) Construction site supervision
      Electrical substation (15-20%) Access to engineering communications
      High/medium voltage lines (5-8%) Construction site security
      Fences, cameras and security measures (3-4%) Construction insurance, etc.
      Other engineering elements, depending on the requirements of the investor, such as improved lighting and access roads (5%)

      The construction of a photovoltaic farm must be very carefully planned.

      Particular attention should be paid to issues that ensure long-term and trouble-free operation, and therefore guarantee a stable profit. Inverters and photovoltaic modules are the most important elements of such projects, which, if properly executed engineering / construction work, have a decisive impact on power generation.

      Of course, it is worth betting on trusted manufacturers who have been operating in the market for a long time, which, in case of any problems, will allow for an effective complaints process.

      The cost of building a solar power plant is also associated with costs that do not depend solely on the investor's decision

      The construction of a solar power plant is also associated with costs that do not depend solely on the decision of the investor, such as rules for connecting to the grid, parameters of existing electrical substations and their equipment.

      Depending on the country and the specific location of the project, these factors can vary, and therefore it can be difficult to predict the exact scope and final cost of the work.

      This requires careful engineering studies and close interaction with local energy companies / regulators, which also results in additional costs at the planning stage of the investment project.

      As we can see, the cost of building a solar power plant can vary significantly within the same capacity. This is influenced by the choice of solar technology and equipment, which differ in productivity, quality, service life and many other parameters. Based on the experience of modern photovoltaic projects, we get a cost of at least 400-500 thousand euros per megawatt. It should be noted that for the so-called CSP-projects, the costs can be many times higher.

      Construction cost of concentrated solar power plants (CSP)

      Traditional photovoltaic power plants based on PV panels have a huge disadvantage.

      This is low generation stability during the day. So-called concentrated solar power plants (CSP) provide greater grid stability compared to photovoltaics. This type of power plant began to develop actively only in the 2010s, so it is still considered a relatively young and expensive technology.

      One of the world's first large commercial CSP power plants capable of generating electricity relatively uniformly around the clock was a 20 MW concentrated solar power plant in Spain, built in 2011. In September of that year, the US Department of Energy issued a loan guarantee of almost $740 million to finance the construction of a new 110 MW solar power plant in Nevada.

      Later, similar projects of a larger scale were implemented in many countries. For example, the famous Ouarzazate Solar Power Station (Morocco) consists of several phases, including CSP phases and photovoltaics.

      The total installed capacity of this power plant is 580 MW, and the cost of the project is estimated at $2.5 billion.

      These power plants use the energy of the sun to heat a heat carrier, whether it be water or molten salts, to produce steam. The latter drives turbines that produce electricity at any time of the day. A typical CSP power plant consists of many thousands of square meters of mirrors that are used to concentrate sunlight into a single point, acting like a huge magnifying glass. The fluid that flows past the beams' concentration point is then heated and uses the heat to drive turbines.

      Obviously, the cost of such power plants is much higher than photovoltaics due to the huge costs of turbine equipment and the coolant delivery system. In 2010, the cost of building a concentrated solar power plant was estimated at 9 million euros per megawatt of installed capacity.

      Despite technical advances, the cost of such projects is still at least 10 times higher than photovoltaics.

      Payback period calculation for solar power plants

      A professional calculation of the payback period for a specific solar energy project is carried out using specially developed financial models.

      For most solar photovoltaic power plants, the payback period varies from 4-5 years for advanced bifacial solar panels to 8-10 years for older technologies. These are small numbers, given the actual life of solar farms of 20-25 years with relatively simple and inexpensive operation and maintenance.

      The main investment costs in the case of traditional photovoltaic power plants are PV panels and inverters, which together usually account for about 60% of the total cost of building a solar power plant. In practice, these cells are rarely replaced during the first decades of operation, since for modern photovoltaic panels, the degradation of silicon cells does not exceed 0.5% of the rated power per year.

      The service life of modern inverters reaches 25 years.

      All this in total suggests that the next major investment in the modernization of the solar power plant may be required by the owner in about two decades, which is 3-4 times longer than the estimated payback period of the investment project.

      Operating costs for the vast majority of solar projects (primarily for photovoltaics) are low. In the latter case, the owner does not need to replace the coolant, nor any significant costs for materials or spare parts. Staffing is also inexpensive. For example, maintenance of small traditional solar PV power plants with a capacity of 1 to 5 MW or more requires only 2-4 specialists.

      For larger projects, the number of personnel per megawatt of installed capacity can be even lower due to economies of scale and the bundling of some functions.

      All modern solar power plants are equipped with highly efficient automated control and monitoring systems. These systems allow the technical team to monitor key power plant parameters online and manage most processes remotely, so the need for manual maintenance is minimal.

      The estimated life of modern solar power plants can reach 25-30 years, but this is possible only with professional engineering design, high-quality construction and installation, use of advanced technologies, equipment and materials. As with any major construction project, some of the project's technical deficiencies may only become apparent after the first 2-5 years of operation, so investors should pay the greatest attention to finding experienced contractors.

      As for the warranty service of equipment and individual components of the solar PV power plant and the terms of their service, this issue in the case of large projects is usually resolved individually based on negotiations between the customer and the manufacturers (suppliers) of the relevant components. The warranty period for most solar panels is 12-15 years, while for inverters this period is somewhat shorter and is only 5-7 years.

      The warranty for installation work in the case of a turnkey solar project is also about 5 years. Once again, experience and technology are two keys to the success of a solar energy project in the long term.

      Construction cost of large solar power plants: economies of scale

      Capital-intensive solar energy projects are flourishing around the world, attracting leading commercial banks, international financial institutions, large private investors, well-known building contractors and engineering firms.

      Currently, China, India and the United States have seized the leadership in generating solar energy in the world, followed by the Middle Eastern countries.

      Solar energy is flourishing, especially in the hot regions of Asia, North Africa and Latin America, where huge solar power plants are being expanded and built at a rapid pace.

      Historically, the cost of building new solar power plants per megawatt of installed capacity has steadily decreased. This was driven by the rapid development of technology and the scale-up of industrial production of equipment such as PV panels, inverters, etc. Although the rate of price decline in the industry has fallen in recent years and experts say this trend will continue, new projects can still take advantage of competitive advantages, which gives them scientific progress.

      As seen in the largest photovoltaic projects in the world commissioned in 2019-2021, the cost of building a large photovoltaic solar power plant ranges from 500 thousand to 1 million euros for each megawatt of installed capacity.

      The exception is more expensive concentrating solar power (CSP) projects, as well as some projects planned in difficult conditions and remote locations.

      Construction cost of large solar power plants: economies of scale

      For comparison, examples of ten-year-old projects such as the Topaz Solar Farm in the United States can be cited. This is a 550 MW photovoltaic power plant laid down in 2011 and put into operation in 2014.

      Built using the most advanced photovoltaic technology at the time, Topaz cost investors $2.5 billion, which equates to $4.5 million per megawatt of installed capacity.

      Table: The cost of the largest solar projects in the world.

      Project name Short description Installed capacity Estimated cost
      Benban Solar Park This power plant is located in Egypt, about 650 km south of Cairo. The project, owned by the State New and Renewable Energy Authority, was completed in November 2019. The photovoltaic panels cover an area of 37 square kilometers, and the annual energy production is planned at 3.8 TWh. 1,650 MW $4,0 billion
      Huanghe Hydropower Hainan Solar Park One of the most expensive solar power plants in the world is located in Qinghai in northwest China and has a capacity of 2.2 GW. It was launched in 2020 and is part of a giant renewable energy complex that is supposed to combine different ways of generating energy, including wind farms and hydroelectric power plants. Ultimately, the complex should reach a capacity of 16 GW. The solar park was built by the Chinese state-owned energy company Huanghe Hydropower Development. 2,200 MW $2,2 billion
      Pavagada Solar Park This project is also known as the Shakti Sthala Solar Power Project. The power plant is located in the state of Karnataka, India. It is the second largest solar farm in India and the third largest in the world. The giant PV panel field, which covers 53 square kilometers, was commissioned in 2019. The facility was designed and built by Karnataka Solar Park Development Corporation Limited and National Thermal Power Corporation. 2,050 MW $2,1 billion
      Bhadla Solar Park The facility is located in Bhadla, in the Indian state of Rajasthan. The region is known for its sunshine and high temperatures, although most of India boasts around 300 days of sunshine a year, making it an ideal place for this kind of investment. The solar power plant was put into operation in March 2020 and has a capacity of 2.25 GW. The entire installation covers an area of 57 square kilometers. 2,250 MW $1,3 billion

      In general, the analysis of a number of large solar energy projects shows that economies of scale significantly reduce the cost per unit of installed capacity.

      This is the leading driver of the current trend of scaling up solar projects. Energy companies are looking for deserted areas of tens of square kilometers where thousands of PV panels can be compactly placed, saving on land preparation, civil works, installation and maintenance.

      Large quantities of equipment are usually purchased at manufacturer discounts, which also save tens of thousands of euros per megawatt installed.

      The cost of one megawatt of installed capacity also depends on the host country. Building a solar power plant in developing countries such as India, Morocco, Indonesia, Thailand and Mexico will cost investors significantly less than similar projects in Germany, Australia or the United States. However, advanced technology and economies of scale make it possible to build highly efficient solar power plants even in even in European countries with a temperate climate at prices not much different from India or Egypt.

      At the end of 2022, the construction of a large 150 MW photovoltaic plant in Subcarpathian Voivodeship (Poland) was announced.

      The expected cost of the project is 85 million euros, which corresponds to about 560 thousand euros per megawatt.

      One of the reasons for the decline in the cost of solar power plants is the fierce competition between the leading global manufacturers of photovoltaic cells and other equipment for this sector. Much depends on the situation in the countries that are leaders in the production of polycrystalline silicon.

      In particular, recent concerns about pandemic restrictions in China have driven up the price of this strategic material around the world, jeopardizing many photovoltaic projects.

      This is not surprising, given that the PRC produces more than 3/4 of the world's volume of polycrystalline silicon.

      Looking for funds to build or upgrade a solar power plant?

      Our company is not only ready to offer you with the necessary long-term financing, but also a wide range of financial engineering services for large projects. Construction loans, project finance, bank guarantees and much more are available to our clients on flexible terms.

      Contact us to find out more.
      After receiving the necessary documents (application form and project presentation), our team will try to review your request as soon as possible, and leading experts will offer the best options for project funding.

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