Renewable electricity systems are so popular now. They can be beneficial to owners of both residential and commercial establishments. There are usually two kinds of systems: off-grid and on-grid. The former are also called stand-alone systems and they do not rely on the utility grid at all. They are totally independent of the utility grid. Instead, off-grid solar power systems use batteries for energy storage when there is either high usage or low input. On the other hand, on-grid systems are divided into two kinds. The first type is referred to as a battery-based grid-tie system. It utilizes batteries and is connected to the utility grid.
Thus, the system can transmit to the grid any extra electricity produced by the RE system. The batteries in this case serve as backup when the grid goes down. The second type is known as a batteryless grid-tie system. The modest of all systems, this kind only uses the energy generation technology (wind turbine, PV modules and so on) and an inverter that is usually fixed to the utility grid. Batteryless grid-tie systems do not use batteries for power backup and so they shut down when the grid goes down. To help you determine the kind of renewable energy system you want to install, we will discuss the pros and cons of each next.
Off-grid systems – Pros
First, these systems run independently and so they are not subject to the rules and regulations set by the local utility companies. Moreover, those who install them are not affected by power interruptions or electricity rate increases. Off-grid installations are more preferred by people who live in rural areas as they are more affordable. Getting a utility line extended to a rural property can be pricey, explaining why off-grid renewable electricity systems are better picks.
Although off-grid and on-grid systems are modular, it is easier and cheaper to expand an off-grid system. Another benefit is that off-grid systems are more efficient to use and can substantially reduce your monthly power bills. Finally, when you use renewable electricity more responsibly and efficiently, you can be admired for conserving the environment for future generations.
On-grid solar power plants – Pros
Why should you consider installing on-grid RE systems? These systems use a high quality battery to absorb as much surplus energy as possible. So you can depend on them fully for extra electric energy. Another advantage is that one is able to install a renewable electricity system that they can comfortably afford. If a large one seems too expensive, you can install the portion you can pay for. This is unlike someone who decides to install an off-grid system as they have to strive to afford it all.
Another point is that when you install on-grid renewable energy systems you do not have to preserve electricity in any way. You can continue to live your life as you did prior to the installation process because the system will make up for some or all your usage. A battery grid-tie system is a better choice than a batteryless grid-tie system when you truly need backup power to use during utility outages.
If you also invest in a photovoltaic system, you will be buying decades of electricity at a fixed price while getting all the benefits of being connected to the grid.