10+ Solar Power Equipment and Materials in EPC Turnkey Project

10 Solar power equipment supplies in EPC general contractor project

As introduced in many articles related to the topic of EPC general contractor for solar power projects , one of the most important factors accounting for over 60% of system installation costs is electrical equipment & supplies. sun .

So what are those solar power equipment & supplies? Why does it account for so much of the cost of a solar power project?

Solar panels

Solar panel is the main device of the solar power system, responsible for converting sunlight into electricity. Solar panels are made up of photovoltaic cells (Solar cells), which are semiconductor elements containing on the surface a large number of photodiodes light sensors, which play the role of converting light energy. into electricity.

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When sunlight shines on photovoltaic cells, the electrons in the semiconductor will be excited and ejected from the atoms. These electrons will move under the influence of the electric field force, creating an electric current.

And we will classify solar batteries based on 2 criteria:

Criteria

Describe

According to the type of semiconductor

There are two main types of solar panels: mono solar panels and poly solar panels .
  • Mono solar panels are made from pure silicon semiconductors, which have higher efficiency than poly solar panels.

(Mono battery picture)

  • Poly solar panels are made from polycrystalline silicon semiconductors, which are cheaper than mono solar panels.

(Poly pin image)

According to production technology

There are two main types of solar panels: PERC solar panels and non-PERC solar panels.
  • PERC solar panels have higher efficiency than non-PERC solar panels.

According to size

Solar panels will come in many different sizes, the most common are:
  • 60 cells solar battery
  • 72 cells solar battery

Grid-connected inverter

Grid-tied inverter is a device that converts direct current (DC) from solar panels into alternating current (AC) to connect to the national grid. The grid-tied inverter is the most important device in the grid-tied solar power system, responsible for converting DC current from solar panels into AC current with the same frequency and voltage as the national grid.

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The inverter operates on the principle of voltage and frequency conversion. DC current from solar panels is fed into the power circuit, where the current will be converted into AC current with the same frequency and voltage as the national grid. This AC current will then be connected to the national grid through the grid-connected electrical cabinet.

To choose a solar power inverter, VREnergy will have 3 notes for you before choosing a grid-connected inverter for an EPC general contractor project as follows:

Criteria

Describe

According to capacity

Grid-connected inverters have many different capacities, the most common are from 3 kWp to 100 kWp .

According to the type of power circuit

There are two main types of grid-tied inverters: single-phase grid-tied inverters and three-phase grid-tied inverters.
  • Single-phase grid-connected inverters are often used for solar power systems with small capacity, less than 10 kWp.
  • Three-phase grid-connected inverters are often used for solar power systems with large capacity, from 10 kWp or more.

According to production technology

There are two main types of grid-tied inverters: grid-tied inverters using IGBT technology and grid-tied inverters using MOSFET technology .

Storage batteries

Solar energy storage battery is a device that stores electricity from a solar power system, providing electricity for electrical equipment in a home or business at night or when there is a power outage. Solar energy storage batteries can be used for grid-connected solar power systems or independent solar power systems.

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Batteries operate on the principle of chemical reactions between electrodes and electrolytes. When current is applied to the battery, electrons will move from the negative pole to the positive pole, creating a chemical reaction and storing energy in the battery. When current is discharged from the battery, electrons move from the positive terminal to the negative terminal, releasing energy and providing power to electrical devices.

Storage batteries for solar power systems will be selected according to the following criteria:

Criteria

Describe

According to the type of electrolyte

There are two main types of solar energy storage batteries: lead-acid batteries and lithium-ion batteries.
  • Lead-acid batteries are the most popular type of battery, have a low price and an average lifespan of 5 to 7 years.
  • Lithium-ion batteries have higher performance than lead-acid batteries, have an average lifespan of 10 to 15 years but are more expensive.

According to production technology

There are two main types of solar energy storage batteries: AGM batteries and GEL batteries.
  • AGM batteries have a plate-like structure, are highly durable and have an average lifespan of 7 to 10 years.
  • GEL batteries have a gel structure and have higher performance than AGM batteries but are more expensive.

DC power cable

DC power cable is a specialized cable used to transmit power from solar panels to grid inverters. DC power cables have the following characteristics:

  • Direct current (DC)
  • High voltage (12V, 24V, 48V, …)
  • Large cross-section (10AWG, 12AWG, 14AWG, …)
  • Resistant to high temperatures (-40°C to +90°C)
  • Explosion-proof

AC power cable

AC power cables are specialized cables used to transmit power from grid-connected inverters to electrical equipment in homes or businesses. AC power cables have the following characteristics to note:

  • Alternating current (AC)
  • Low voltage (220V, 380V, …)
  • Small cross-section (1.5mm², 2.5mm², …)
  • Resistant to high temperatures (-40°C to +90°C)
  • Explosion-proof

DC electrical cabinet

DC electrical cabinets operate based on the principles of protection, connection and power distribution. When power from solar panels is fed into the DC electrical cabinet, it will be protected by a fuse from overload and short circuit incidents.

The power will then be protected from overvoltage and overcurrent faults by the overvoltage protection circuit and overcurrent protection circuit.

Next, the electricity will be protected by the lightning protection circuit from lightning incidents. Finally, the electricity will be distributed to the solar panels through the electrical panel.

DC electrical cabinets will be divided into the following types:

  • According to the number of strings: DC electrical cabinets can be divided into 1 string DC electrical cabinets, 2 string DC electrical cabinets,…
  • According to capacity: DC electrical cabinets can be divided into small capacity DC electrical cabinets, medium capacity DC electrical cabinets, large capacity DC electrical cabinets,…
  • According to installation method: DC electrical cabinets can be divided into DC electrical cabinets installed indoors, DC electrical cabinets installed outdoors,…

AC electrical cabinet

AC electrical cabinets are devices used to protect, connect and distribute power from the grid-connected inverter to electrical equipment in the home or business. The AC cabinet is one of the important devices of the solar power system, playing a role in ensuring the safety and operational efficiency of the system.

With the role of ensuring the safety and operational efficiency of the system. Choosing the right AC cabinet will help the system operate stably and durably.

Cable tray

The cable array is the electrical cable system used to transmit power from solar panels to the grid-tied inverter. The cable array is one of the important components of the solar power system, playing a role in ensuring the safety and operational efficiency of the system.

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The cable array is composed of the following main components:

  • DC cable: is a specialized cable used to transmit power from solar panels to grid-connected inverters.
  • AC cable: is a specialized cable used to transmit power from the grid-connected inverter to electrical equipment in the home or business.

Cable clamp

Cable clamp is a type of electrical accessory used to fix electric cables in a certain position. Cable clamps play a role in ensuring safety and efficiency during the use of electric cables. The structure of the cable clamp includes the following components:

  • Clamp body: The clamp body is the main part of the cable clamp, which plays the role of fixing the electric cable. The clamp body can be made from many different materials such as steel, aluminum, stainless steel, etc.
  • Clamp: The clamp is the part used to fix the electric cable to the clamp body. Clamps can be made from many different materials such as steel, aluminum, stainless steel, etc.
  • Bolt: Bolt is the part used to tighten the clamp, ensuring the electric cable is firmly fixed.

In solar power systems, cable clamps are often used to fix DC power cables and AC power cables. Types of cable clamps commonly used in solar power systems, specifically:

  • U-shaped cable clamp: U-shaped cable clamp is the most common type of cable clamp in solar power systems. U-shaped cable clamps can be used to fix DC power cables and AC power cables.
  • V-shaped cable clamp: V-shaped cable clamp has the ability to fix power cables more firmly than U-shaped cable clamps. V-shaped cable clamps are often used to fix DC power cables with large cross-sections.
  • Z-shaped cable clamp: Z-shaped cable clamp has the ability to fix electric cables in angular positions. Z cable clamps are commonly used to secure AC power cables.

Cable clamps are an important electrical accessory, playing a role in ensuring safety and efficiency during the use of electric cables. Choosing and using cable clamps properly will help the electrical system operate stably and durably.

Aluminum rail

Aluminum rail is a type of aluminum bar used to install solar panels. Aluminum rail plays a role in ensuring safety and efficiency during the installation and operation of solar power systems.

About structure

  • Aluminum bar: Aluminum bar is the main component of the aluminum rail, which plays the role of bearing and fixing the solar panels. Aluminum bars are usually made from 6063-T5 aluminum, have high durability, can withstand large weight.
  • Panel clamp: The panel clamp is the part used to fix solar panels to the aluminum bar. Panel clamps are usually made from aluminum or steel, with good bearing capacity.
  • Bolts and screws: Bolts and screws are the parts used to connect the components of the aluminum rail together. Bolts and screws are usually made from steel and have good bearing capacity.

About classification

  • By shape: Aluminum rail can be classified into U-shaped aluminum rail, L-shaped aluminum rail, T-shaped aluminum rail, etc.
  • By size: Aluminum rail can be classified into long aluminum rail, short aluminum rail,…
  • According to capacity: Aluminum rail can be classified into large capacity aluminum rail, small capacity aluminum rail,…

Battery panel holder

A solar panel bracket is a device used to fix solar panels on the roof, on the ground, on the wall, etc. The panel bracket plays a role in ensuring safety and efficiency during the installation process. and operate solar power systems.

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In solar power systems, panel racks are often used to install solar panels on the roof, on the ground, on walls, etc. Types of panel racks are often used in solar power systems. include:

  • Solar panel racks installed on the roof: Solar panel racks installed on the roof are usually made from steel or aluminum, have high durability, and can withstand large weight. There are many different types of solar panel racks installed on the roof, suitable for many different types of roofs.
  • Solar panel racks installed on the ground: Solar panel racks installed on the ground are usually made from steel or aluminum, with good bearing capacity. Ground-mounted solar panel racks are often used for large-scale solar power systems.
  • Wall-mounted solar panel racks: Wall-mounted solar panel racks are usually made from steel or aluminum, have a compact design, suitable for small-scale solar power systems.

Other tools

Other tools and supplies include tools and supplies necessary for the installation and maintenance of solar power systems such as ladders, welding machines, drills, pliers, screwdrivers, hammers, etc.

Why do solar power equipment and supplies account for a lot of the cost of an EPC general contractor project?

Solar power equipment & supplies account for much of the cost of the EPC general contractor project because they are the most important components of the solar power system, determining the performance and lifespan of the system.

Solar power equipment & supplies have high prices, especially solar panels. The price of solar panels depends on many factors such as performance, capacity, material, brand, etc. Currently, solar panel prices tend to gradually decrease due to modern production technology. more developed. However, it still accounts for the majority of the cost of the EPC general contractor project.

In addition, the cost of solar power equipment & supplies also depends on the scale of the solar power system. The larger the solar power system, the higher the cost of solar power equipment and supplies.

To reduce the cost of solar power equipment & supplies, investors need to choose solar power equipment & supplies of good quality, suitable for usage needs and at a reasonable price.

4 Criteria for selecting solar power equipment and supplies

Quality, performance, longevity and price are four important criteria that need to be considered when choosing solar power equipment and supplies. Investors need to choose products that suit their needs and financial capabilities to ensure efficiency and cost savings while using the solar power system.

Quality

Quality is the most important criterion that should be given top priority when choosing solar power equipment and supplies. Good quality solar power equipment and supplies will ensure the performance and longevity of the solar power system.

The quality of solar power equipment and supplies is shown through the following factors:

  • Materials: Solar power equipment and supplies manufactured from high-quality materials will be highly durable and better able to withstand environmental impacts.
  • Production techniques: Solar power equipment and supplies manufactured using modern technology will have high energy conversion efficiency and better safety.
  • Testing: Solar power equipment and supplies are strictly tested to ensure quality and safety.

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When choosing solar power equipment and supplies, investors need to pay attention to the following factors to ensure quality:

  • Choose a reputable brand: Reputable brands often have many years of experience in manufacturing and trading solar power equipment and supplies. Products from reputable brands are often made from high-quality materials, using modern technology and rigorously tested.
  • Choose products with international quality certification: International quality certifications such as CE, UL, TUV,… will ensure the quality and safety of solar power equipment and supplies.
  • Choose a product with good warranty and maintenance: A good warranty and maintenance policy will help investors feel secure while using the solar power system.

Choosing good quality solar power equipment and supplies will help investors save costs and ensure the performance and longevity of the solar power system.

Efficiency

Performance is the second important criterion that needs to be considered when choosing solar power equipment and supplies. The performance of solar power equipment and supplies demonstrates the ability to convert solar energy into electricity. The higher the efficiency, the greater the amount of power obtained.

The efficiency of solar power equipment and supplies is expressed in percentage. For example, a solar panel efficiency of 20% means that for every 100W of solar energy absorbed, the panel will convert into 20W of electricity.

Choosing high-performance solar power equipment and supplies will help investors save electricity costs while using the solar power system.

Longevity

Longevity is an important criterion that needs to be considered when choosing solar power equipment and supplies. The lifespan of solar power equipment and supplies demonstrates the ability to operate stably over a long period of time.

The lifespan of solar power equipment and supplies is expressed in years. For example, the lifespan of solar panels typically ranges from 25 to 30 years.

Choosing long-lasting solar power equipment and supplies will help investors save investment and maintenance costs during the use of the solar power system.

Reasonable price

Price is a criterion that needs to be considered when choosing solar power equipment and supplies. The cost of solar power equipment and supplies depends on many factors such as quality, performance, brand,…

When choosing solar power equipment and supplies, investors need to pay attention to the following factors to ensure reasonable prices:

  • Compare prices of products of the same type: Investors need to compare prices of products of the same type from different suppliers to choose the product with the most reasonable price.
  • Find out about promotions and incentives: Suppliers often have attractive promotions and incentives to attract customers. Investors should learn about these programs to save costs.
  • Choose high-performance products: High-performance products will help investors save electricity costs while using the solar power system.

Here are some ways to save costs when choosing solar power equipment and supplies:

  • Choose a product with the right size: Choosing a product with the right size for your needs will help save investment costs.
  • Choose a product with a long-term warranty: A long-term warranty will help investors save on repair and replacement costs during use.
  • Choose products from reputable brands: Reputable brands often have good quality and reasonable prices.

Price is one of the important criteria that need to be considered when choosing solar power equipment and supplies. Investors need to choose products with reasonable prices but still ensure quality and performance to save costs while using the solar power system.

Price list of solar power equipment and supplies for EPC general contractor project [REFERENCE]

CategoryPrice (VND/kWp)

Describe

Solar panels

15,000,000

Solar panel price: Solar panel price depends on many factors such as quality, performance, brand, etc. The solar panel price in the price list is the price of the solar panel. It has 20% efficiency, from a reputable brand.

Grid-connected inverter

18,000,000

The price of a grid-tied inverter depends on many factors such as capacity, performance, brand, etc. The price of the grid-tied inverter in the price list is the price of a grid-tied inverter with a capacity of 1MWp, from a reputable brand.

Cable segment

1 million

The price of the cable segment depends on the material, brand… The price of the cable segment in the price list is the price of a good quality cable segment, from a reputable brand.

Battery panel holder

2,000,000

The price of the solar panel rack depends on the material, brand… The price of the solar panel rack in the price list is the price of a good quality solar panel rack, from a reputable brand.

Other devices

1 million

Prices of other equipment include protective equipment, measuring equipment… Prices of other equipment in the price list are prices of good quality equipment, from reputable brands.

Total cost

37,000,000

The total investment cost for a solar power project with a total installed capacity of 1MWp is calculated using the following formula:

Total investment cost = Equipment price * Total installed capacity

According to the price list above, the total investment cost for a solar power project with a total installed capacity of 1MWp is:

Total investment cost = 37,000,000 VND/kWP * 1,000 kWP = 37,000,000,000 VND

Equivalent to 840,000 USD (calculated at the exchange rate of 20,000 VND/USD).

As a new business owner or investor learning about investing in solar power projects , you are ready to deploy a solar power system in the SHORTEST TIME.

Our solar power system deployment process is methodically designed to bring the most optimal solution to customers:

  • Research & survey the needs and terrain of project implementation.
  • Prepare a detailed plan including: design, implementation plan…
  • Carry out project construction and installation.
  • Acceptance and review to put into operation.
  • Periodic maintenance and upkeep.

Our difference is in diversifying solar power equipment and specializing in technical solutions. With pride in bringing superior solutions along with outstanding products, reasonable prices and considerate maintenance. These are the things we enjoy when accompanying your business.

VREnergy always accompanies customers with specific solutions and detailed plans to meet business expectations in project implementation.