Key Questions to Ask When Ordering House Storage Battery Manufacturer
Ask these 7 questions before you buy a home battery
Canary Media&#;s Electrified Life column shares real-world tales, tips, and insights to demystify what individuals can do to shift their homes and lives to clean electric power.
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This article is the second in a two-part series on home batteries. In case you missed it, here&#;s part 1: &#;&#;Is adding a battery to your rooftop solar worth it? Here&#;s how to decide.&#;
Alex Bazhinov has turned his home into a clean energy power plant, complete with the ability to store renewable energy for when he needs it. The solar panels on his roof in Charlottesville, Virginia, feed his home battery during the day, so it can charge his electric vehicle in the evening. This allows him to avoid the cost of charging from the grid; plus, he said, &#;&#;I know that I&#;m driving on truly clean electricity.&#;
Besides their ability to deliver renewable power, home batteries can provide resilience in the face of outages and deliver a quicker system payback than installing rooftop solar alone. And while home batteries are still expensive, for the first time, their costs are coming down, Charles Hadlow, president and chief operating officer at clean energy marketplace EnergySage, told Canary Media.
Based on over 300,000 EnergySage battery system installation quotes done through the platform, costs tumbled from the first half of to the second half from a median of $1,352 per kilowatt-hour (kWh) stored to a median of $1,265.
Thanks to these falling costs, a changing policy landscape, and a bevy of incentives, batteries are becoming a hot home addition. In , the number of solar customers also installing home batteries hovered below 10% nationwide. Now that rate has shot to more than 30% &#; in large part because Californians are flocking to batteries amid a new regulatory regime that incentivizes them. Texas and Florida are also moving the market, potentially driven by extreme weather, Hadlow said.
If you already have rooftop solar &#; or are planning to get it &#; and you&#;re intrigued by a home battery&#;s benefits, you&#;ll have a number of factors to consider first. Buying a battery is like buying a car &#; only, how to evaluate batteries is less familiar.
So here are seven key questions to ask yourself before you get a home battery of your own.
1
. How much stored energy, or capacity, do I need?
Batteries have two major features: their capacity (how much energy they can store) and their power rating (how fast they can deliver that stored energy). Think of the battery&#;s capacity like a tank of water; the power rating is like the size of the pipe that drains it.
An average home uses 29 kWh per day, and a typical battery stores 10 to 13 kWh. To determine how many batteries will cover your needs, a good contractor will use software to analyze your energy consumption data from your utility, said Barry Cinnamon, CEO of California-based Cinnamon Energy Systems. The system size will also be influenced by how you answer this next question.
2
. What appliances do I want to back up?
Different appliances have distinct power requirements. A Wi-Fi router takes less power to run than a refrigerator, which takes less power than an air conditioner or a sump pump. Appliances also have different needs for peak or surge power (like when an AC kicks on) and for continuous power (to keep the AC running over time). If the devices you plan to back up are power hungry, you&#;ll want to make sure your battery is rated to provide for their peak and continuous power needs.
These power ratings &#;&#;are changing pretty fast,&#; Hadlow said. &#;&#;Some of the latest batteries coming out, such as the PowerWall 3, Franklin Whole Home [aPower], and Enphase IQ 5P, are significant improvements over what we&#;ve seen in the past.&#;
7 Questions to Ask Before Buying Solar Battery Storage
Thinking about adding a battery to your solar system to store the excess power your panels produce? As severe weather events and power safety shutoffs prevail, now is a great time to make that smart investment. But you'll want to ask yourself a few questions first to make sure that you get the right home battery backup system to meet your needs.
1. Do I Really Need to Add a Battery to My Solar System?
The short answer is: If you want to take advantage of the benefits of solar power even when the sun isn&#;t shining or the power grid is down, you&#;ll need battery storage for your solar electric (or photovoltaic) panels. If you live in an area that implements time-of-use (TOU) rates, the amount you pay for electricity will vary depending on the time of day you use it. By installing a home battery backup system, you can use your battery during peak demand hours to send any power you&#;re not using back to the grid, and receive more credits on your electricity bill for doing so.
2. What Do I Need to Power During an Outage?&#;
The amount of backup energy you&#;ll have varies depending on several factors, including:
- How much power your solar system is producing
- How much solar energy your household consumes
- How much energy is stored in the solar battery
- What you are powering during the outage
The more power you&#;re consuming, the less time your backup power supply will last. So, we recommend avoiding high consumption appliances, such as multiple air conditioning units or other large appliances, for long periods of time.
If you want to be able to power certain things during an extended outage, such as your Wi-Fi modem, fridge, and electric furnace, use Sunnova&#;s battery duration tool to get an idea of how much home battery storage you might need to power your essential and large appliances.
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You&#;ll also want to speak with a professional about your needs. You can start by requesting a no-obligation quote here.
3. Will I Use a Solar Battery to Charge My Electric Vehicle (now or down the road)?&#;
The step from a solar system with battery backup to an electric vehicle (EV) is not a huge one. If you care about affordable energy and sustainability, these are all for you. But electric vehicles use a lot of power &#; whether you&#;re using solar power you generate yourself or pulling electricity from the grid. In fact, an EV could deplete your entire solar battery if you&#;ve only planned for enough storage to power your home in between charges.
If you have an electric vehicle &#; or want to get one &#; you should have a plan for charging it. And if you want to use solar power to charge your EV at night, make sure you have enough backup energy to do so. With home battery storage, you can also charge your EV during a power outage.
4. Have I Installed an Energy Intensive Feature Like a Pool (or do I plan to)?
Failing to account for a major energy user, like a pool, a refrigerator, or one of another many things that has an outsized effect on your overall energy usage, can lead to a battery that&#;s too small. Before sizing a solar system with battery backup, use Sunnova&#;s battery duration tool to get an idea of what some major energy drains could be and how to account for them when planning your battery storage solution.
5. Am I Affected by &#;Time of Use&#; Rates?&#;
Aside from electricity prices varying based on time of use, in some cases, the price may vary from season to season. Basically, customers pay less for electricity at times of the day when there is less demand on the electric grid, and they pay more for electricity during times of day when there is more demand. These are often referred to as off-peak and on-peak periods.
When you add a battery to your solar system, you can program that solar battery to power your home during on-peak hours, when the utility rate is higher. That means you can factor in those reduced costs when you&#;re thinking about the return on investing in home battery storage. Also, if you live in a place that has TOU rates and you need to charge an electric vehicle, it makes the most sense to charge your EV with your battery during times when rates spike.
6. What Factors Go into Correctly Sizing My Battery Backup System?
To correctly size your system, you need to know how much energy from the grid you use now. You can find that amount
on your electric bill. This will give you an idea of how much energy your home is using during times when solar
panels are not currently powering your home. That is the power that your home storage system should aim to replace.
You&#;ll also want to speak with your installer to see if it would be a good idea to add any additional solar panels to up the
amount of energy you capture once you can store extra power.
7. Is My Home Battery Storage System Eligible for State or Federal Incentives?&#;
Incentives for home battery storage do exist, and vary depending on where you live. To take advantage of tax incentives, you need to own your system outright by paying upfront or through a loan, not a lease or power purchase agreement (PPA). There is one federal tax incentive &#; the investment tax credit (ITC) &#; that was extended by the Inflation Reduction Act in to include energy storage. Customers who own their storage systems may be eligible for 30% tax credit on the cost of their installed system from through .
There are other state-specific and utility-specific solar battery incentives that you can apply for, ranging from property tax exemptions and tiered rebates to post-installation bill credits.
Whether you&#;re interested in solar plus battery storage, or adding a battery to your current solar system, Sunnova is here to help. By requesting a quote, we can connect you with an expert in your area who can help you find the right home battery storage system and reduce your solar battery cost through rebates and storage incentives.
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