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Grid-Tied and Off-Grid Solar 101
Jun28

Grid-Tied and Off-Grid Solar 101

Will I need batteries for my solar system?  How much does it cost to go completely off the grid? Let’s take a look at main differences is between a “grid-tied” solar system and the less common “off-grid” solar system. Grid-tied Solar Most photovoltaic (PV) systems are connected to the utility grid, hence the name “grid-tied.”  When your solar system is connected to the grid, you still have access to energy after dark without batteries.  Your grid-tied system simply pulls the electricity you need from the utility grid.   Here’s how it works:   A group of solar panels, known as the array, generate direct current (DC) electricity.  An inverter changes the DC electricity into alternating current (AC) electricity, which is the grid-quality electricity that comes from the power outlets in your home. When the grid-tied system produces more energy than your home is consuming, the excess electricity is sent into the utility grid, spinning your meter backwards as credit toward your next electricity bill.  When your load requirements exceed the electricity being produced by your photovoltaic (PV) system, your home will draw electricity from the grid.  This is called net metering. Grid-tie solar systems are a cost-effective way to reduce your net energy consumption. Grid-tied solar systems are ideal for those whose utility provider bill them according to a tiered rate structure –  where rates you pay are higher when you’re consuming more energy (kWh). Grid-tied solar gets you out of the higher tiers on your electric bill to save you money. If you need help designing a grid-tied solar system, request a no obligation quote today. Will I still have power during a blackout? Not with a grid-tied PV system.  You’ll still experience blackouts when the power goes out in your neighborhood because your are connected to the utility grid.  Sending electricity into the grid during a power outage would be especially dangerous if the utility company has workers repairing power lines. For most people, a power outage here and there isn’t too much of a concern.  Just keep your refrigerator closed and charge your iPhone with a JOOS Orange Portable Solar Charger. But what about Armageddon? Or the zombie apocalypse?! I’ll need power to fight off the living dead! If you live in an area that is plagued by frequent blackouts, hurricanes, or maybe the living dead chewing on power-lines, battery backup may be an option for you. Keep in mind, battery backup is for critical loads, or the appliances that are imperative to survival.  So you really can’t blast the AC and leave the television running 24/7 in the aftermath of a natural disaster. In most cases,...

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