Information to help
you better understand grid tie solar installations.
Grid Tie Solar increases your home value!
Grid Tie Solar Electric kits from Event Horizon Solar can help you reduce or eliminate your electric bill, protect against future rate increases and provide free electricity after the payback period. It is an excellent recession proof investment with a better safer rate of return than most stocks and helps the local economy. Made in USA solar equipment is available. Some utilities offer power buyback programs which can help reduce payback periods for solar and all offer net metering grid tie programs. Click here for more on these programs. Event Horizon Solar has been helping Michigan home and business customers to install grid tie solar at a reasonable cost for over 17 years! Let us add you to the growing list of Michigan grid tie solar installations.
There are two types of utility tie solar (or grid tie) solar installations. The solar system shown in Fig.1 has a solar array fed directly into a solar ac/dc inverter and is then fed directly into the grid through the buildings main electrical box and is the most popular grid tie solar installation. The utility company usually installs their own bi-directional meter to monitor the solar output. With this type of grid tie solar system, if the utility power is turned off or fails for any reason, the solar installation also stops producing power and this function is required for all grid tie solar installations to protect line workers from being injured by energized utility wires. If a customer wants to add battery backup to this type of grid tie solar system, it can be done at a later date using an off grid type solar inverter with batteries that is compatible with the existing grid tie inverter and is know as an AC coupled solar system. You should tell your solar contractor or dealer before purchasing a solar grid tie only system so they can make sure you have solar equipment that is compatible for this type of grid interactive system.
The other type of grid tie solar electric install is similar to the first one
shown but uses a battery bank to power the building in case of utility
failure. See Fig.2. Power is automatically transferred to the building
just like a gas emergency generator would during a power failure except
the solar inverter does the automatic transfer and batteries are the
This type of grid tie solar install is not as efficient as a grid tie only
system because some power
is used to keep the batteries charged and there is more energy loss due to
the extra wire and solar charge control electronics involved in the
installation. Also having batteries installed may add to the
overall cost and maintenance of a solar grid tie system. However, if you experience frequent power
failures from your utility or just want piece of mind, this may be a convenient option and there is
no noise or fumes and transfer happens quickly and automatically. These
systems can be net metered also.
Sizing a grid tie solar system.
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Michigan grid tie solar