How Does Solar + Storage Help with Rolling Blackouts?

Texas produces more electricity than any other state, so Texans were stunned last February when Winter Storm Uri suddenly shut down most of the state’s power grid. Texas’ power producers had not adequately weatherized natural gas plants, wind turbines and other energy-production sites to withstand the bitterly cold temperatures. Many of them stopped working, requiring rolling blackouts in some areas and leaving others without power for days.

But Texas’ “big freeze” was just the latest widespread blackout to hit the United States. Wildfires, hurricanes, heatwaves and high winds have also caused rolling blackouts, or as many California residents and PG&E customers know them, “public safety power shutoffs.” For instance, California’s 2020 wildfires left as many as 10 million people in the dark at times, and the state’s enduring drought means similar fires will likely return this year.

These and other extreme weather events are making solar storage options like SunPower’s SunVault™ storage system more attractive to homeowners. Many people believe homes powered by photovoltaic (PV) solar panels are independent of the grid and not affected by blackouts. In some cases, that’s true, but most solar homes and businesses tend to be “grid-tied,” which means they’re partners with the local utility. Solar panels produce the home’s electricity during the day, and the utility provides electricity at night or on cloudy days.

This arrangement greatly reduces – or even eliminates – electricity costs for solar homeowners. But it also means solar homes can face blackouts. However, unlike other homes, solar homes can use a solar battery to keep the lights, fridge and other essential appliances running.¹Also, solar-powered homes help reduce strain on the grid when extreme weather hits. In fact, that’s one reason why many states, including California, offer their own rebates and incentives on top of the federal solar tax credit (ITC).*

Non-solar homes frequently use generators to keep the power on during a blackout, but generators lose out to solar batteries on issues like cost, noise, size and environmental impact.

And unlike a generator, the SunVault system saves you money even when there’s nothing wrong with the grid. It allows you to store solar energy during the day and use it at night. Any energy that won’t fit in your solar battery can, in many areas, help you offset your electric bill through net metering.²The SunVault storage system is currently available only to customers with the SunPower Equinox® AC module technology, it will eventually be available for use with legacy SunPower systems as well. 

SunPower’s SunVault storage system comes in two sleek, attractive boxes – the SunVault battery and the Hub+™. The larger box – the battery – is slightly smaller than a refrigerator and stores excess energy not used throughout the day The smaller box features intelligent software that lets you control when and how your stored solar energy is used.

The SunVault storage system helps reduce the risk of blackouts by easing the strain on the grid. But solar power also is a form of renewable energy that reduces the level of greenhouse gasses that cause climate change – which is believed to be responsible for much of the extreme weather we are currently experiencing. In fact, it would take planting about 2 billion more trees to store as much carbon dioxide as the emissions reduced by the entire U.S. solar industry.

Each home has different solar and storage needs. Qualified solar installers know how to design your Equinox solar and SunVault storage systems to give you the energy you need when you need it. We’ve created a strong dealer network with the expertise to tailor your home’s PV solar system for maximum efficiency. That network includes Master Dealers, a select group of installers who with close ties to their communities.

Find out more at SunPower’s website or by calling 1-800-SUNPOWER.

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¹ Your battery storage system’s ability to provide electricity to your home will vary based on a number of factors, including: the amount of energy stored in the battery, the amount of wattage used by appliances and electronics connected to the storage system, the age of the battery, the battery’s ability to recharge during daylight hours due to weather, the frequency and duration of battery usage, and other factors. The battery storage system should not be relied upon as a power source for critical medical devices. Battery life will decrease with time and use.

² The availability of net metering varies by location and is subject to change. Your SunPower Dealer can help you determine if you qualify. You can also visit the dsireusa.org website for detailed solar policy information.

Original Source: https://us.sunpower.com/blog/2021/07/20/how-does-solar-battery-help-during-rolling-blackouts