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Floating photovoltaics

Why floating solar power?

Why should we build a floating solar power plant?

When installing a solar power plant on mountainous or farmland
1) The encroachment of forests and farmlands, which are CO2 sinks, is inevitable.
2) It is easy to damage the natural scenery.
3) It may cause landslides, soil runoff, and disturbance of the ecosystem due to reckless development.
4) Not only can it threaten food security due to a decrease in agricultural production, but there is also a risk that it will lead to the collapse of rural basic industries and encourage the disappearance of local rural areas.

When installing a floating solar power plant inside a freshwater reservoir or dam or seawater public water surface
1) Not only can clean energy be produced without being exposed to the four problems pointed out earlier, but
2) Power generation increases by more than 10% compared to when installed on land.
3) The moisture evaporation suppression function can significantly reduce water shortages in reservoir dams due to climate change.
4) By reducing the amount of solar radiation more than necessary, green and red tides that occur at high temperatures can be prevented.
5) It not only contributes to the increase in fish resources by increasing the spawning rate of fish, but also contributes to the revitalization of the aquatic ecosystem by improving the habitat environment by blocking light appropriately.
6) In addition, when solar panels are rotated with little power using buoyancy, power generation increases by more than 15%, and BK Energy has a large number of patented technologies, including being certified as a new technology (NET) by the Ministry of Trade, Industry and Energy for its rotating floating solar power generation system. It is an innovative company in Korea.

What is the development potential of floating solar power plants?

Since Korea's share in the global solar power market is only about 1%, BK Energy has been considering entering the global market for 10 years and has been developing technology to complement various problems that may arise when installing a solar power plant on water. As a result of our focus, we are currently receiving love calls from many countries around the world.

Through the “World Floating Solar Power Market Report” in 2018, 6 years ago, WORLD BANK reported that if floating solar power was installed on 10% of freshwater, the development potential to create 4,044GW of eco-friendly power plants was equivalent to installing 4,044 nuclear power plants. The development potential and annual power generation for each continent were presented as follows.

Can marine solar power be installed in the ocean?

Marine solar power plants installed in the sea require careful consideration in location selection.
1) Because there is a high risk of solar power plants being damaged when a typhoon comes, the sea is surrounded on all sides by natural bays that can minimize damage to islands or land from high waves and strong winds coming from the open sea. Or, it must be a safe area, like the equator, where there are no strong winds or waves such as typhoons or hurricanes.
2) It must be installed in an area other than the ship's anchorage or route so as not to cause any damage to the navigation or anchorage of ships sailing or anchoring.
3) When solar power is installed at sea, the efficiency and profitability of solar panel are reduced due to the damage of saltwater and seabird poop.
By applying the hydrophilic inorganic nano-coating technology developed and patented by BK Energy, a decrease in power generation due to panel contamination can be prevented, making it possible to create a more profitable offshore solar power plant.

The advantage of an offshore solar power plant is that when installing a solar power plant on land, there is a disadvantage that it may take a lot of time to secure the land because it must be leased or purchased from landowners of numerous parcels divided into small areas.
1) Since most of the public waters of the sea are owned by the government, there is an advantage in that solar power plants can be installed in a large area with only a point-use permit from the Ministry of Oceans and Fisheries or local governments.
2) Benefits of scale (refers to a phenomenon in which long-term average costs decrease as the scale of input increases, and average costs decrease as production increases. Also called economies of scale (businessnomies of scale)) increases.

BK Energy is carrying out projects to develop marine solar power plants on public waters in front of Dang-Hang-Man in Goseong County in Republic of Korea, public waters in Salut and Kudat in Sabah, Malaysia, Dakhla in Morocco, Lagos Lagos Lagoon in Nigeria, public waters in Swansea City in the United Kingdom, and public waters in front of Pasirputih in Indonesia. there is. In particular, Dakhla in Morocco can be said to be a future oil field expected to serve as a clean hydrogen production base needed by Europe, and Kudat in Malaysia is expected to serve as a clean hydrogen production base needed by Korea and Japan.

How will we overcome salt damage, tides, waves, strong winds, and flow rates?

A variety of fish live in the sea, and it has already been proven that when a solar power plant is installed on the water, fish gather in groups because a shadow is formed in the water. As long as there is food for birds, many birds can view marine solar power plants as a base for hunting for food, that is, as a base for survival. Therefore, many cases have been confirmed at various sites in which solar panels are unexpectedly vulnerable to contamination by bird droppings. Additionally, the salt in the sea causes not only iron but also stainless steel to rust. Before the 12th century, Korea's ancestors developed a glaze that allowed celadon to preserve its original color even after being submerged in seawater for hundreds of years. BK Energy has succeeded in developing a technology that can prevent damage from salt and coarse dust in marine solar power plants, a hydrophilic inorganic nano-coating technology that inherited and developed the glaze technology used in celadon - and white porcelain.

[ Solar panels are polluted with air pollutants such as fine dust, pollen, bird droppings, and salt, resulting in a decrease in power generation ]

In order to install marine solar power, it is necessary to research the frequency of typhoons, maximum wind speed and wave height over the past 50 years, and then create a safe solar power plant that will not be damaged even in strong winds and waves through structural design, structural analysis, and flow analysis. In addition, we have developed technology to disperse water flow and prevent buoyant bodies exposed to sunlight for long periods of time from cracking or breaking in order to increase the safety factor of solar power plants in the strong flow velocity of the sea, and floating breakwater technology to break waves outside of marine solar power plants. BK Energy continues its challenge despite difficult conditions to produce clean energy in the waters and seas of the five oceans and six continents.