Benefits of the Tesla Powerwall Coupled With Solar
Once you install solar, any unused power that your panels generate will be exported back onto the grid by NV Energy for others to use. Without the Powerwall, the unused energy you export onto the grid will be credited to your account at only a fraction of the market rate.
The Powerwall lets you store extra power, which you'd otherwise have to sell back to NV Energy at pennies on the dollar, in your home for you to use at a later date, which saves you money.
Use solar-generated power whenever you need it, even in an outage.
Why NV Energy's Net Metering Mechanism Prevents Solar-Powered Homeowners From Maximimizing ROI if They Don't Have Tesla Powerwall Installed With Their Solar Arrays.
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Net Metering Definition
Net metering is a renewable energy technology that lets solar-powered homes and businesses put their surplus solar-generated power back onto the grid and sell it back to the utility company at a predetermined rate for other homeowners to use. Sometimes utility companies institute net metering programs, or they're created by state or city-specific clean energy laws.
Understanding Why Net Metering Matters
Think of a home without solar panels. To use electricity, the home must draw from the utility company's energy reserves. The sun, however, generates a renewable form of energy, meaning it's infinite in its capacity.
With the sun's infinite capacity comes the ability for homeowners and business owners to produce surplus solar power from their solar modules. However, they need a way to store it, so they can use it when the sun isn't out.
For many, the solution to storing surplus solar power has become net metering coupled with battery backup. Through net metering technology and policies, utility customers receive compensation, either through a credit on their bill or a check from the utility for their excess solar-generated power, which offsets the energy pulled off the grid at night and during poor weather.
The Sustainability of Net Metering for Utilities and Customers
While many utilities started their solar net metering programs with net metering, many argue that this metering system isn't sustainable for utilities after a certain amount of homes add solar.
Utilities and power companies typically have two main arguments against net metering, neither of which considers the interests of the homeowner. First, utilities argue that solar customers don't cover grid maintenance costs when they only pay a connection fee. Secondly, net-metered customers put energy on the grid during low demand times and draw power during peak usage times without paying for it.
Net metering, as it stands currently, isn't a sustainable solution by itself. It's a Band-Aid approach to solar power storage. As solar storage options have become affordable, people have started to rely less on the grid for their solar storage needs, turning to battery backup to leverage their solar arrays. Instead, they use the grid as a plan B, should their system fail.
What Is Needed To Maximize Net Metering Benefits?
Leveraging net metering incentives to their fullest extent means much more than adding solar. Fully leveraging the benefits of net metering comes when grid-tied homes use battery backup and highly efficient solar panels, which are properly installed for maximum PV ray absorption.
Why Net Metering Requires Homes Stay Connected To the Grid
Receiving net metering benefits requires having a grid-tied home. Off-grid homes don't have a way to put excess solar power on the grid or pull power from it. While off-grid homeowners can leverage solar power, they cannot benefit from net metering credits and saving, but they can fully own their power and still rely on battery backup.
Why Having Battery Backup Matters With Net Metering
If the utility company offers less than a 1:1 credit (the 100 percent market rate price) for the solar energy you export back onto the grid, you will want to have a form of battery backup. Battery backup empowers solar homeowners by providing full control over their excess solar power, including how much is stored and when it is used.