What are the different types of solar systems?

Grid-Tied Solar

A grid-tied solar system consists of solar panels and a grid-tied solar inverter. This is the most common form of solar installed throughout the world. The solar system generates electricity, this electricity is used in the home and the excess is sent back out to the grid. If the solar generation is not enough to cover demand power will be used from the grid.

Most grid-tied systems will disconnect during a power outage. There are two reasons for this:

1. If the lines are down, it would be dangerous to send electricity back to the grid. There is a chance a line worker could get electrocuted.

2. The grid is used as a buffer for the ever-changing loads in your household. Without a grid connection, the solar inverter wouldn’t be able to manage the varying demand. For example, you are boiling the kettle using all the solar power you are generating, the kettle flicks off, now where does the solar power go if there is no grid? Inverters cannot react that fast.

Hybrid Solar

This system is a mix between a grid-tied solar system and an off-grid system. It consists of, Solar panels, Solar inverter and a battery bank.

A grid-tied send excess solar energy back to the grid. A hybrid system is designed to capture this excess energy and store it in the batteries. This energy can then be used at night or to meet peak demands, reducing or eliminating energy used from the grid.

A major difference between a hybrid system and off-grid system is the battery bank size. An off-grid system will generally have the battery sized to get through a few days of inclement weather, whereas a hybrid system will usually be sized to store enough energy to get through the night until the sun comes out the next day.

As hybrid systems have a battery you would expect to have backup power in the case of an outage. It pays to be careful with components you choose here as some systems will not have the backup function, they are purely to save excess solar power to be used at night. so in a power cut, you will find yourself without power.

If you are unsure about installing a battery or not at first, then that’s no problem at all. Just install a grid-tied system, ensure you have consumption monitoring. Then down the track when you have monitored your system, you will know which battery will be right for your system.

Off-Grid Solar

In some areas, there is no grid to connect to. To supply power in areas without a grid, you need a separate system.

Examples of stand-alone systems are:

Homes that are too far from power lines to connect. Generally, if the house is more than 300m from a power line, it may be worth considering going off the grid.

Cottages in remote areas. They are far from the grid and their only option is to install their own independent power system.

weather station. Often in remote areas, weather stations require their own independent systems.

Radio or telephone antenna. Most of the equipment is located on the top of the mountain to reach the maximum number of people. Connecting power cables to these tops can be expensive, and most of the time it makes more sense to have your own off-grid system.

Off-grid systems include:

Solar Panels - Power Generation
Battery Storage - Stores energy for night or off-day use
Inverter - converts direct current to alternating current for use with common appliances
Monitoring - Monitor battery charge status and solar input

The components we use in off-grid are changing in recent years, mainly in terms of battery types. Lead acid battery packs are traditionally used. In recent years, it has often been beneficial to use lithium batteries such as Tesla, BYD or Pylontech.

In order to avoid damage to the lead-acid battery, it can only discharge about 20-30%. That means a very large battery pack is needed to store energy for several days. With lithium, they can be fully discharged without damaging the battery. This means smaller battery packs and a lower risk of system damage.

Lithium-ion batteries charge much faster than lead-acid batteries, which means that if the sun is out for a short period of time, the lithium-ion battery can make the most of this energy. Lead-acid batteries typically take 7-8 hours to complete a charge cycle, so are often not able to fully utilize the available energy.

Off-grid systems usually also have a generator input. This is a backup in the event of prolonged severe weather. Another advantage of lithium batteries is that in the event that a generator needs to be used, the time the generator will run will be significantly reduced to charge the battery.

Modern off-grid systems are capable of online monitoring. This allows monitoring of the system through a cloud platform, so you can keep an eye on your system from anywhere in the world. At Wanaka Solar, we love this feature because it allows us to keep an eye on your system as well and help you with any queries or system maintenance.

What are TOPCon solar cells?

Photovoltaic (PV) module manufacturers are constantly working to find new, more advanced alternatives to improve the efficiency of solar panels. Efficiency can be improved through innovative cell manufacturing techniques, and now there are a few contenders in the solar photovoltaic market.

The latest module trends expect market growth to focus on HJT and TOPCon solar cells.

The 2022 report from the International Technology Roadmap for Photovoltaics (ITRPV) shows some of the expected trends over the next 10 years:

❖ PERC (passivated emitter rear contact) solar cell technology currently leads the market with a market share of approximately 75%. However, it is expected that the share of p-type monocrystalline PERC cells will drop to about 10% in the next 10 years.

❖ The market share of N-type TOPCon (tunnel oxide passivated contact) technology will increase from about 10% in 2022 to 60% in 2033, becoming the mainstream silicon wafer type. The largest increase is expected to begin in 2024.

❖ N-type HJT (heterojunction solar cells) is expected to increase from approximately 9% (2023) to over 25% in the next decade. The implementation of heterojunction cell technology still faces difficulties due to the high production costs of solar cells and the incompatibility of production lines with existing technologies.

P-type PERC and N-type TopCon

PERC technology is a cost-effective compromise between efficiency and large-scale production. But improving solar panel efficiency using this approach has been slow. The current efficiency of mainstream P-type modules is about 21.4%, and will increase to 22.75% in the next 10 years.

N-type TOPCon solar cells installed in photovoltaic modules look identical to PERC cells. Both P-type and N-type solar cells are made from silicon wafers. The difference between them is the way the wafers are doped with chemicals to increase the amount of electricity generated.

Simply put, P-type cells are doped with boron, while N-type cells are doped with phosphorus. In contrast, phosphorus degrades less than boron when exposed to oxygen. In addition, phosphorus doping can add free electrons to the wafer, thereby increasing efficiency.

Therefore, N-type based modules can achieve higher efficiency. It is estimated that efficiency, currently close to 22.5%, will increase to around 24% over the next 10 years.

The problem with the N-type manufacturing process is that it is still relatively expensive.

What are the advantages of TOPCon technology?

1. Manufacturing process

TOPCon modules can be manufactured using almost the same machines as P-type modules, which means that the use of TOPCon cells does not require a large investment by manufacturers.

2. Higher efficiency

According to the Fraunhofer ISE institute, efficiency can exceed 25%. The maximum theoretical efficiency of PERC cells is approximately 24%.

3. Reduce degradation rate

Compared to PERC panels, TOPCon modules have lower power decay during the first year and 30 years of PV panel life.

4. Lower temperature coefficient

TOPCon batteries have better resistance to extreme weather scenarios.

5. Double-sided rate

The bifacial coefficient of PERC PV modules averages about 70%, while the bifacial coefficient of TOPCon panels is as high as 85%. They capture more energy from the back than PERC bifacial modules, which is beneficial for ground-mounted utility projects. They are also more attractive from an aesthetic perspective than PERC solar panels.

6. Low light performance

TOPcon modules are more efficient in low-light conditions, extending power generation during the day and improving the performance of the installation over time.

What is a gel battery?

Gel battery is a valve-regulated maintenance-free lead-acid battery. Gel batteries are very strong and versatile. This type of battery produces very little fumes and can be used in places without much ventilation.

How do gel batteries work?

A gel battery is a valve-regulated lead-acid battery in which a predetermined amount of electrolyte is mixed with silica fume along with sulfuric acid. This chemical reaction produces a fixed, gel-like substance that gives these batteries their name. Gel batteries are virtually maintenance-free because they use a valve that opens in one direction, allowing the gas inside to recombine into the water, so there's no need to check top up with distilled water or monitor the water level. Gel batteries are very strong and versatile. They can be safely installed in places with restricted ventilation as their gas/smoke production is very low (nearly zero) meaning you can even install batteries in your home.

Special consideration should be given when choosing a charger for gel batteries, as they charge at lower voltages. Overvoltage can cause malfunctions and performance degradation. The term GEL battery is sometimes used to refer to a sealed, maintenance-free battery marked as a setting on the charge controller. This can be confusing and can lead to the wrong charger selection or wrong settings while charging. If other charging methods such as alternators are used, an appropriate voltage regulator must be installed to control the charging voltage. Typical charging voltages for batteries range from 14.0 volts to 14.2 volts, and float voltages range from 13.1 volts to 13.3 volts.

Advantages of Gel Batteries

Gel batteries are gaining popularity in solar systems for the following reasons:

1.Best for deep cycle applications, typically in the range of 500 to 5000 cycles

2.Maintenance free

3.Spill proof

4.Minimal corrosion and therefore compatible with sensitive electronics

5.Rugged and Vibration Resistant

6.Very safe as there is less risk of sulfuric acid burns

7.Minimum cost per month (cost/months of life)

8.Lowest cost per cycle (cost/life cycle)

Disadvantages of Gel Batteries

1.Can't refill in case of overcharging

2.Requires special charger and voltage regulator

Do not confuse AGM batteries with GEL batteries

Today, AGM batteries are often mistaken for gel batteries because of their many similarities.

1.Both are reconstituted - meaning that the oxygen produced on the positive plate is absorbed by the negative plate. Instead of producing hydrogen, the negative plates now produce water, thus maintaining the water content in the battery. That's why AGM and Gel batteries are valve regulated, sealed, spill proof, maintenance free, vibration resistant and can be installed in any location.

2.The notable difference between the two is the difference in electrolytes. The electrolyte used in gel batteries looks like jelly, while the electrolyte in AGM batteries is absorbed in a glass mat that acts like a separator. Due to the properties of the electrolytes used in gel batteries, the batteries lose power quickly at temperatures below 32 degrees Fahrenheit, whereas AGM batteries work efficiently at low temperatures.

3.Gel batteries are best for deep discharge because they are less acid and protect the plates better than AGM batteries. AGM is more compatible where high current is required

What is BIPV?

Building-integrated photovoltaics (BIPV) are solar power generating products or systems that are seamlessly integrated into the building envelope and part of building components such as facades, roofs or windows. Serving a dual purpose, a BIPV system is an integral component of the building skin that simultaneously converts solar energy into electricity and provides building envelope functions such as:

weather protection
thermal insulation
noise protection
daylight illumination
safety

Applications

1. Facade – PV can be integrated into the sides of buildings, replacing traditional glass windows with semi-transparent thin-film or crystalline solar panels. These surfaces have less access to direct sunlight than rooftop systems, but typically offer a larger available area. In retrofit applications, PV panels can also be used to camouflage unattractive or degraded building exteriors.

2. Rooftops – In these applications, PV material replaces roofing material or, in some cases, the roof itself. Some companies offer an integrated, single-piece solar rooftop made with laminated glass; others offer solar “shingles” which can be mounted in place of regular roof shingles.

3. Glazing – Ultra-thin solar cells may be used to create semi-transparent surfaces, which allow daylight to penetrate while simultaneously generating electricity. These are often used to create PV skylights or greenhouses.

Benefits of BIPV

The benefits of BIPV are manifold: BIPV not only produces on-site clean electricity without requiring additional land area, but can also impact the energy consumption of a building through daylight utilization and reduction of cooling loads. BIPV can therefore contribute to developing net-zero energy buildings. Turning roofs and façades into energy generating assets, BIPV is the only building material that has a return on investment (ROI). Furthermore, the diverse use of BIPV systems opens many opportunities for architects and building designers to enhance the visual appearance of buildings. Finally, yet importantly, building owners benefit from reduced electricity bills and the positive image of being recognized as "green" and "innovative".

Why BIPV?

In the face of climate change, the world is evolving rapidly, and it comes an urgent need of sustainable energy solutions. One of the innovative solutions to this global problem is Building Integrated Photovoltaics (BIPV). These solar panels not only serve the dual purpose of providing power and generating electricity for house, but also shaping the future urban infrastructure. Let's rearch deeper for why BIPV is not only a viable option for modern construction, but the preferred choice.

Benefits of BIPV Panels

Building-integrated solar panels offer house owners and businesses a unique solution. They are not just additions to the existing structure; they are embedded within the structure itself. Because they act as both a building envelope and an energy generator, no need for a separate solar installation, providing functionality and aesthetics.

Space Efficiency

Building-integrated solar offers unique advantages in urban environments where space is at a premium. By integrating solar panels directly into building facades or roofs, no additional land or space is required to accommodate large solar farms. This efficient use of space is especially beneficial in densely populated areas. By choosing vertical or rooftop solar installations in urban environments, we can leave more land undisturbed. This approach protects natural habitats and supports biodiversity, unlike large ground based solar farms that sometimes damage local eco systems.

Resource Efficiency and Environmental Impact

Integrating solar panels into buildings reduces the need for additional materials and space. This means fewer resources are used and less waste is produced. By reducing the amount of raw materials required for construction and installation, we minimize our environmental footprint and pressure on natural resources. Additionally, because solar energy is green and renewable, it significantly reduces buildings' carbon footprint.

Design Flexibility

A building's aesthetics are an integral part of its appeal, value, and ability to blend in or stand out in its environment. Building-integrated solar panels continue to develop not only as functional components, but also as design elements that can enhance the attractiveness of buildings.

Thanks to advances in technology and manufacturing techniques, building-integrated photovoltaic systems can be integrated into a variety of building styles, from traditional to contemporary. This ensures that the integration of solar panels does not compromise the building's original design vision, but rather complements or even enhances it.

With modern technologies, roof-integrated systems can be customized to match a variety of architectural styles. Whether you want to integrate with existing roof tiles or achieve a seamless look, you have the flexibility to accommodate any design preference.

BIPV offers a range of design options. This includes different colors, textures and opacity. Some BIPV solutions even mimic materials like slate or terracotta, allowing architects and house owners to maintain a specific aesthetic while still reaping the benefit of solar energy.

While rooftops are a common site for building PV integration, the technology's adaptability means it can also be used on facades, awnings, or even as part of a building's shading system. This broadens design possibilities and enables architects to think creatively about how and where to incorporate solar power into their designs.

Photovoltaic Building Integrated Applications

1. Awnings and canopies. Outdoor structures such as awnings. Awnings are ideal for building-integrated photovoltaics, capturing sunlight while providing shade.

2. Facades. BIPV facades convert building appearance into energy, blending aesthetics with functionality. Large glass curtain wall can be equipped with translucent integrated solar panels that filter sunlight while generating energy.

3. Balcony and terrace. Integrating building-integrated photovoltaics into a balcony or terrace.

4. Roof installation. Rooftop installations are the most common application of building-integrated photovoltaics, blending seamlessly with the contours of the building. Here, the roof not only acts as a barrier against the elements, but also acts as a solar generator.

Incorporating Solar Bollard Lights in Landscape Design

Solar bollard lights bring a fresh perspective to landscape design, combining eco-friendly technology with modern elegance. These solar powered outdoor lights are perfect for creating illuminated pathways, cozy garden corners, or vibrant public spaces, all without the hassle of wiring. Their sleek, minimalist appearance effortlessly blends into various outdoor themes, offering a seamless mix of functionality and style.

When thoughtfully positioned, solar bollard lights enhance both safety and ambiance. Whether guiding guests along a winding walkway or spotlighting a flower bed, these solar LED lamps provide a gentle, inviting glow. Adjustable brightness settings allow for a range of effects, from subtle accents for intimate spaces to bright, clear lighting for busy areas like parking lots or patios.

What sets solar bollard lights apart is their commitment to sustainability. By harnessing the power of the sun, they reduce electricity usage and contribute to greener living. Modern designs come equipped with efficient solar panels and long-lasting batteries, ensuring they perform well even on cloudy days. For eco-conscious homeowners and businesses, these lights are a win-win solution.

solar LED lamps

Maintenance is another area where solar bollard lights shine. Installation is simple, as there’s no need for digging trenches or dealing with complex wiring. Designed with durability in mind, many options are crafted from weather-resistant materials like aluminum or stainless steel. For those seeking an easy-to-manage, stylish lighting option, solar bollard lights are a smart addition to any landscape design.

SLD, Solar Lights Do, is a company that specializes in manufacturing and selling high-quality SLD solar lights. We offer a wide range of efficient and durable solar lighting solutions designed for outdoor use. If you're interested, please visit us at www.solarlightsdo.com.

Rooftop solar mounting structure(1)

Rooftop solar mounting structure is an essential component in the solar energy system. Rooftop solar mounting structure provides stable support for solar panels. Our high - quality rooftop solar mounting structure ensures the safety and durability of solar installations. Rooftop solar mounting structure can adapt to various types of rooftops. With advanced technology, our rooftop solar mounting structure has excellent performance. Rooftop solar mounting structure plays a crucial role in maximizing solar energy utilization. Our rooftop solar mounting structure is designed with precision to meet different customer requirements. Rooftop solar mounting structure helps to make solar power generation more efficient. We are proud to present our rooftop solar mounting structure at the upcoming exhibition. Rooftop solar mounting structure is the key to a successful solar project.

We are excited to announce that we will be participating in the Warsaw Exhibition in Poland from January 14th to 16th, 2025. At the exhibition, we will showcase our outstanding rooftop solar mounting structure. Our booth will display the features and advantages of our products, and our professional team will be on - site to provide detailed information and answer any questions. Don't miss the opportunity to visit us and learn more about our rooftop solar mounting structure. contact me: whatsapp+8613365923720

Amazing Metal Solar Roof Mounting System

The Metal Solar Roof Mounting System is a revolutionary product! It's not just a mounting system; it's a game - changer.

The Metal Solar Roof Mounting System is designed with precision. It ensures your solar panels are firmly in place on the roof. The Metal Solar Roof Mounting System can withstand various weather conditions, whether it's strong winds or heavy snow.

With the Metal Solar Roof Mounting System, installation becomes a breeze. The Metal Solar Roof Mounting System has unique features that make it stand out among others. It provides excellent stability for your solar setup.

The Metal Solar Roof Mounting System is made of high - quality materials. It guarantees long - term durability. The Metal Solar Roof Mounting System is the ideal choice for both residential and commercial solar projects. Trust the Metal Solar Roof Mounting System to enhance your solar energy utilization!

Aluminum Ground Mount Systems Ground Screw Foundation vs. Concrete Foundation

The foundation is a critical component of solar ground mounting systems, influencing both the stability and overall performance of the project. For aluminum ground mounting systems, two common options are ground screw foundations (helical piles) and concrete foundations, each with unique characteristics that make them suitable for different applications.

What Are Ground Screws (Helical Piles) in Solar Mounting Systems?

Ground screws are a fast and efficient foundation solution, offering simplicity and adaptability in solar installations.

Key Features:

✅ Minimal site preparation—piles are driven directly into the ground with specialized equipment.

✅ Faster installation time, ideal for large-scale deployments.

✅ Minimal disruption to the environment, making it easier to adjust or remove if necessary.

Ground Mount for Solar Panels

Why Choose Concrete Foundations for Aluminum Solar Ground Mount Systems?

Concrete foundations are a traditional and reliable choice for long-term stability in solar systems.

Key Features:
✅ Provides superior resistance to wind and snow loads, ensuring durability.
✅ Widely adaptable to various terrains and environmental conditions.
✅ Standardized installation processes involving site preparation and concrete curing.

Key Differences Between Ground Screws and Concrete Foundations

Aspect	Ground Screw	Concrete Foundation
Installation Speed	Quick and efficient	Requires longer construction time
Site Preparation	Minimal requirements	Involves ground excavation or leveling
Resource Usage	Lower material transport costs	Higher demand for materials and labor
Flexibility	Easy to remove and reuse	Better suited for permanent installations

Choosing the Right Foundation for Aluminum Ground Mount Systems

The choice between ground screws and concrete foundations depends on your project's unique requirements. Whether you prioritize installation speed, terrain adaptability, or long-term stability, the right foundation will ensure your system's optimal performance.

💡 Have questions or need guidance? Our team is here to support you—feel free to reach out or explore our website for more insights tailored to your needs.

Email: info@winsunsolar.com

WhatsApp : +86 18805065452 / +86 15005991307

Exploring Solar Mounting Solutions for Metal Roof What Works Best ?

Solar Panel Installations on Metal Roofs: Best Mounting Solutions and Key Challenges

With the rise of renewable energy, metal roofs are becoming a popular choice for solar panel installations in commercial and industrial buildings. However, installing solar panels on metal roofs comes with unique challenges like load-bearing capacity, waterproofing, wind resistance, and more. Let’s explore the best mounting solutions to tackle these challenges for secure and efficient solar panel installations.

Different Mounting Solutions for Metal Roof Solar Installations

When it comes to installing solar panels on metal roofs, choosing the right solar mounting solution is crucial. Here are four commonly used metal roof solar mounting systems, each designed for different roof types and project requirements:

1.Rail-based Mounting Solution

The rail-based mounting solution is widely used for securely installing solar panels on metal roofs. It offers strong load capacity and flexibility, making it suitable for various roof types.

Solar Panels Metal Roof Installation

For instance, the L-Foot soalr mounting system ensures even load distribution while maintaining waterproofing with EPDM sealing pads.

Attaching Solar Panels to Metal Roof

The Hanger Bolt solar mounting system, on the other hand, provides enhanced stability by securing directly to the roof’s structural beams, making it ideal for high-load conditions.

2.Mini Rail Solar Mounting Solution

If you’re looking for a more compact solution, the Mini Rail system is an excellent option. Its short rail design reduces material use and transportation costs, making it an efficient choice for many projects. Its cost-effectiveness makes it an ideal choice for companies looking to maximize ROI on solar installations.

This system allows for faster installation and adapts to various roof types. Despite its compact structure, the Mini Rail system is built from durable materials, ensuring long-term reliability and the ability to withstand challenging weather conditions.

3.Rail-less Solar Mounting Solution

For projects that require even fewer materials and components, the Rail-less Solar Mounting System offers a streamlined alternative.

This solution eliminates the need for long rails by using brackets or clamps to secure the panels directly to the roof. This reduces both material costs and installation time, making it a practical and efficient choice for many projects.

4. Non-Penetrating Solar Mounting Solution

For installations where preserving the roof's integrity is a top priority, the Non-Penetrating Solar Mounting System is an excellent option.

By using clamps that attach to the standing seams or ribs of the roof, this solution avoids the need for drilling or puncturing the roof surface. It minimizes water leak risks and helps maintain the roof's structural integrity, making it a reliable choice for metal roof installations.

Making the Right Choice

There are many options for installing solar panels on metal roofs. The key is to select the right one based on the roof type and the specific needs of your project.

Have questions about which mounting solution fits your project? Comment below or reach out to us directly—we’d be happy to help. Don’t forget to follow us for more industry insights on solar panel installations.

Get In Touch

Email: info@winsunsolar.com

WhatsApp : +86 18805065452 / +86 15005991307