If you already have grid power (or you will have it, in the case of new construction), you are in great shape to add PV to your home or business.
The simplest and least expensive of the grid-tied systems designed by Empowered Energy Systems have no batteries. When your system is producing power, it offsets the power you would otherwise be buying from the utility and you save money. When your system is producing more power than you are using, you offset all the power you would otherwise be buying from the utility, plus, whatever extra power you produce turns your meter backwards and you get retail credit from your utility. This is called “net metering”. Then, when night comes around or you turn on a big load, you eventually use up your net metered credit. You might build up a credit in the summer and not use it all up until winter, or if your system was designed to “net zero”, you may never quite use up your credit.
A grid-tied system with battery back-up, unlike a simple grid-tied system, can automatically provide power to your home or business during power outages. Empowered Energy Systems’ grid-tied battery back-up systems are similar to battery-less systems in how the array is installed and how the system functions when the grid is up, and very similar to an off-grid system when the grid is down. When the grid goes down, the inverter immediately disconnects from the grid and supplies your home or business with high quality back-up power. The PV array keeps on producing, and you have the power available from it as well as that stored in batteries. You can back up a few “critical loads”, or you can back up your whole house, depending on the size of the system and how it is designed.
With a grid-tied battery back-up system, you will have a well-functioning system that gives you peace of mind and power all the times you need it! More than a third of all the grid-tied systems we design and install have battery back-up.
Where are the PV panels installed?
There are a number of options to where PV modules can be installed. Roof mounting is usually the most cost effective, and arrays can go on almost all roof types, including metal, composition, tile, shake, etc. Ground and post mounting are good options, too, and they can go almost anywhere there is little or no shade on the array.