Saturday, June 29, 2019

Understanding Difference between Solar Grid Tie and Off-Grid System

As the name suggests, solar grid tied systems means the solar system is connected to the electrical grid. Conversely, off grid solar means the solar system is not connected to the grid. If you want to know the difference between solar grid tie and off-grid systems, please check out this post and know accordingly:

Grid-Tied Solar System –

Most of the solar systems available now are grid-tied systems. These solar systems are tied directly into the existing electrical grid and need the electrical grid to be operating for solar system to produce electricity. 



The Benefits of Grid-Tied Solar System –

· The cost is affordable than off grid solar system as it doesn’t need batteries and other components.
· Net metering is a billing mechanism allowing the electricity generated by a solar system to offset the electricity used from the grid.
· In some areas, SRECs benefit the grid tie solar system owners greatly allowing the owners get additional income through selling the SRECs the solar system produces. 

Understanding SREC –

“SREC” stands for Solar Renewable Energy Certificate and is issued for every MWh – 1000 kWHs which is generated from a solar project. This represents the environmental benefits of solar systems and is different from electric savings. 

Cons of Grid-Tied Solar Systems –

When the electrical grid system goes down, a grid-tied system is unable to produce any electricity further. 

Understanding Off-Grid Solar System –

Most people are aware of the idea of installing an off-grid solar system because of the versatility and stability that the solar system is going to bring in. According to a theoretical approach, an off-grid solar system will produce energy consistently for over 30 years. 

Benefits of Off-Grid Solar Systems –

Off-grid systems offer versatility from the electrical grid. 

Demerits of Off-Grid Solar System –

· The cost of the system ranges from 70% to 100% higher than the grid-tied solar system. 

· Batteries and other components should be must to deliver electricity throughout day and night consistently. 

Final Takeaway –

For most people, a solar grid tie system is a solid investment that offers predictability and security for their homes, business or farm. The payback for a solar grid-tied system is shorter as there are fewer components that could require replacement in the near future. 

Moreover, a solar off-grid system is a good investment for more isolated spaces and cabins. But the off-grid systems are unable to compete with the payback and ROI a grid tie solar system provides. We at 123 Zero Energy specialize in providing comprehensive solar system packages including a great selection of pre-packaged systems and accessories for grid tie systems, off-grid systems and solar PV kits. 

Our grid tie system can be installed by the homeowner. You will need a licensed electrician to make the final grid connection. Their penetration points are perfectly protected with proprietary flashing for shingled roofs or sealing gaskets for metallic roofs. For more information, please visit our website.