On-Grid solar PV systems
A building has two parallel power supplies, one from the solar PV system and the other from the power grid. The combined power supply feeds all the loads connected to the main ACDB. The ratio of solar PV supply to power grid supply varies, depending on the size of the solar PV system. Whenever the solar PV supply exceed the building’s demand, excess electricity will be exported into the grid.
One of the key features of on-grid systems is net metering. With net metering, any excess electricity generated by the solar panels is sent back to the grid, and the customer receives credits or compensation for this surplus power. During times when solar generation is insufficient, such as at night or during cloudy weather, electricity is drawn from the grid as usual.
Solar on-grid systems offer several advantages, including:
- Cost Savings: By harnessing solar energy, customers can reduce their dependence on grid-supplied electricity, resulting in lower electricity bills over time.
- Environmental Benefits: Solar power is a clean and renewable energy source, which reduces greenhouse gas emissions and helps combat climate change.
- Grid Stability: On-grid systems contribute to the stability and reliability of the electrical grid by supplying additional power during peak demand periods.
- Ease of Installation and Maintenance: On-grid systems are relatively simple to install and require minimal maintenance compared to off-grid systems, as they do not require batteries or backup power sources.
However, it’s important to note that on-grid systems do not provide power during grid outages. To ensure uninterrupted power supply during blackouts or emergencies, additional backup solutions such as battery storage systems may be required.
Overall, solar on-grid systems offer a practical and efficient way to harness solar energy while remaining connected to the existing electrical infrastructure.
