The team at V-TAC provide some key pointers that professionals should remember before installing photovoltaic solar panels.
In order to achieve a successful upgrade to clean energy, it’s important that installers take note of some useful information that will help them in the process of installing solar panels. Explaining these things to customers before starting any project can help with making the whole installation process seamless and less overwhelming.
Project size/budget
After determining the size of the roof and the budget for the project, planning the possible solar system setup should be based on the energy requirements, the target daily average, the amount of sunlight in the area, and the clients’ specific preferences. Installers can then proceed to calculate and estimate the number of panels needed. Doing this on both high and low wattage options will allow you to create a range of sizes and arrive with realistic expectations in relation to the number of panels required to achieve your target.
Regulations and DNO applications
One of the many benefits of installing a solar panel system is being eligible to receive Smart Export Guarantee (SEG) payments for selling energy to the grid. This requires a certification from your Distribution Network Operator (DNO) so as to ensure that all installations are compliant with local grid regulations, and that the extra load and strain can be managed safely and effectively.
DNO G98. For small scale systems (16 A per phase), an Adequacy of Supply (AoS) test will be undertaken to check if the existing electricity supply is enough for the additional load. Within 28 days of commissioning the solar system, a notification should be submitted to the DNO. If the current supply isn’t adequate, upgrading the electricity supply is required.
DNO G99. For larger scale solar systems with >16 A per phase, a DNO approval will be required before any installation can be made. If you’re installing Distributed Generation equipment rated at 50kW or higher, you’ll need to complete a Standard Application Form (SAF).
DNO G100. A G100 application is required if your G99 application comes back and the system’s export needs to be limited.
Types of solar PV panels
Different solar panels have different efficiency rates which are based on the quality and type of cells equipped on the panels themselves.
Thin-film
These are a type of photovoltaic technology that is made from thin layers of photovoltaic material deposited on a substrate. Their flexibility makes them ideal for curved or irregularly shaped surfaces. This characteristic is useful in the application of solar panels in roofing, where the panels can be easily integrated into the roof design.
Monocrystalline or black
Easily recognisable by their uniform black colour and circular cut edges, monocrystalline solar panels are made from single, large silicon crystals and are the most efficient type of solar panel on the market. They can generate more power per square metre compared to low-efficiency panels, are more durable, have a longer lifespan, and perform well in low-light conditions.
The new V-TAC Energy catalogue includes a selection of scalable monocrystalline panels for various load requirements. Engineered for a positive power tolerance, they produce power equal to or greater than their rated power while PID resistance makes sure the solar panels maintain their power efficiency in spite of high voltages, temperatures, humidity, and other potential factors.
Browse the V-TAC solar energy catalogue here
