CALL NOW

WHAT'S APP

Solar Photovoltaic / Electricity

>> Our Product

Categories


Solar Photovoltaic System/Solar Electricity

A photovoltaic (PV) panel, commonly referred to as a solar panel, contains PV cells that absorb sunlight and convert it into electricity. These cells, made of a semiconductor material like silicon, are connected together to form a module. A typical rooftop solar panel consists of 30 modules. When sunlight hits the semiconductor in the photovoltaic cells, it knocks electrons free from their positions, allowing them to flow through the semiconductor. These freed electrons, carrying a negative charge, move across the cell toward the front surface, creating an imbalance in charge between the front and back of the cell. This imbalance generates a voltage potential, similar to the positive and negative terminals of a battery, which allows the photovoltaic cells to produce electricity.

The current generated is then collected by wires and can be used immediately or stored in a battery. Solar cells can still generate power on cloudy days, although they won't produce as much as they would on a sunny day.


What are the components of a solar PV system?

The main components of a photovoltaic system include:

  • Photovoltaic modules: These capture the sun's energy using special components that generate electricity when exposed to sunlight.
  • Support structures: These structures secure the modules to the roof. On flat roofs, support structures can adjust the orientation of the panels to optimize their exposure to sunlight.
  • Inverter: This electronic device converts the direct current (DC) produced by the modules into alternating current (AC), which is the type of electricity used by homes and businesses. Inverters also include safety features that shut down the system in case of a power failure or network disturbance.
  • Electric cables: These cables transmit the generated electricity from the system to the users.

Additional components that enhance the efficiency of photovoltaic systems include:

  • system: Allows for remote monitoring of the system's energy production, consumption, and inverter status.
  • storage: An innovative system that stores the energy produced during the day for use when the system isn’t generating power, enabling users to maximize their consumption of the solar energy generated without needing to change their usage habits.

Grid-Tied vs. Off-Grid Solar Systems: Understanding Your Options

When deciding between grid-tied and off-grid solar systems, it's important to understand how each system works and the advantages and disadvantages they offer.


Grid-Tied Solar Systems


What Is a Grid-Tied Solar System?

A grid-tied solar system is connected to the electrical grid and relies on the grid for power when the solar panels aren’t producing enough electricity, like at night or during cloudy weather. It allows you to draw electricity from the grid as needed and send excess solar energy back to the grid, often earning you credits through net metering.


Advantages:

  • Cost-Effective: Grid-tied systems are generally less expensive because they don't require batteries for storage.
  • Net Metering: You can offset electricity costs by sending excess energy to the grid and earning credits.
  • Scalable:Ideal for those who can't install a large enough system to meet 100% of their energy needs.
  • No Need for Storage: The grid acts as your backup, so you don't need expensive batteries.

Disadvantages:

  • Dependent on the Grid:If the grid goes down, your system shuts off, leaving you without power unless you have a battery backup.
  • Ongoing Utility Charges: You may still incur service or delivery charges from the utility company, even if your system covers most of your energy needs.

Off-Grid Solar Systems


What Is an Off-Grid Solar System?

An off-grid solar system operates independently from the electrical grid, relying solely on solar panels and battery storage to meet all your energy needs. This system is ideal for remote locations or for those seeking complete energy independence.


Advantages:

  • Energy Independence:Completely free from reliance on the electrical grid.
  • Remote Viability: Perfect for locations without grid access or where extending the grid would be cost-prohibitive.
  • Resilience: Continues to provide power during grid outages.

Disadvantages:

  • Higher Costs: More expensive due to the need for batteries and other storage equipment.
  • Energy Management: Requires careful planning to ensure enough energy is generated and stored, particularly during periods of low sunlight.
  • Maintenance: Batteries require maintenance and have a limited lifespan, adding to the long-term costs.

Hybrid Solar Systems

A hybrid system combines the benefits of both grid-tied and off-grid systems by connecting to the grid while also incorporating battery storage. This allows you to have backup power during grid outages and reduce demand charges, though it comes with higher costs due to the added batteries.


Hybrid System


Conclusion

Choosing between grid-tied and off-grid solar systems depends on your specific needs and circumstances. If you prioritize cost savings and ease of use, a grid-tied system might be the best option. However, if energy independence and resilience are more important, an off-grid system could be worth the investment. For those looking for a balance, a hybrid system offers a compromise by providing the benefits of both while mitigating some of the disadvantages.

Solar ON-Grid System/Off-Grid System