Should you personal a house (or ever lived in a single, actually), the identify Kohler in all probability rings a bell. Kohler has made the whole lot from sinks, to bogs, and even cupboards. However what you won’t understand is that Kohler isn’t only a chief in plumbing tools, however in energy era, as nicely.
Actually, Kohler constructed the primary modern-day generator again in 1920, and it’s nonetheless a trusted identify in backup energy as we speak. Regardless of that, even a 100-year previous firm can nonetheless expertise some “firsts”. Having seen the significance that clear power performs in having a sustainable future, Kohler Energy launched its first residential photo voltaic battery – the Kohler Energy Reserve.
However does the Kohler Energy Reserve power storage system dwell as much as the corporate’s prime quality requirements and excellent legacy? And being that it’s provided at the next worth level than opponents just like the sonnenCore and Tesla Powerwall, is it value the additional value?
How does the Kohler Energy reserve work?
The stored power can then be used to run the house at a later time when the solar panels can’t meet the home’s energy needs (like during a power outage) or when the sun goes down. When you add a solar battery to your home solar system, you then have what is known as a “hybrid solar system”.
Watch the below video to get a better understanding of how solar panels and batteries work together to power homes:
Homeowners can choose between four different operating modes for the Power Reserve:
- Backup mode, where the battery remains charged and only discharges in the event of a power outage
- Self-Supply mode reduces the amount of electricity a home takes from the utility grid. It charges the battery with excess solar power during the day and discharges to power appliances later, when the solar panels aren’t producing electricity
- Time-of-Use mode dictates when the battery charges and discharges, based on how much the utility is charging for electricity, allowing homeowners to save extra money on their utility bills
- Custom mode allows homeowners to choose how their battery works based on their specific energy consumption habits
How much does the Kohler Power Reserve battery cost?
Kohler offers their solar battery backup system in three different sizes, so they have three different starting prices:
|Battery size||Starting cost*|
*Starting cost not including installation or incentives
These prices are a bit higher than what you pay for some other leading solar batteries on the market. The 10 kWh sonnenCore battery, for example, costs around $9,000 before installation or incentives, while the 13.5 kWh Tesla Powerwall costs $8,500 before incentives or installation.
Does the Kohler Power Reserve qualify for the solar tax credit?
Yes, the Kohler Power Reserve qualifies for the 26% federal solar tax credit, so long as it is paired with a solar panel system.
Let’s say you purchase the 10 kWh Power Reserve. The installation costs an additional $2,000, bringing the total cost to $15,325. The federal solar tax credit would drop the price down to about $11,340.
Another thing to take note of is the fact that the Power Reserve is OpenADR compliant, so it could possibly take part in power storage aggregation applications the place accessible, which suggests your utility can pay you for entry to the power you have got saved inside your battery.
So, the Energy Reserve may really wind up incomes you a bit of extra cash out of your utility in case your utility has one among these applications, or is planning one sooner or later. You will discover details about incentives and applications your utility presents right here.
Have in mind, set up prices will differ tremendously relying on the battery mannequin, the place you reside, the design of the system, and the installer you select.
See how a lot you’ll save month-to-month after switching to photo voltaic
Key specs for the Kohler Energy Reserve
|Specification||DC mannequin||AC mannequin (10 kWh)||AC fashions (15 and 20 kWh)|
|Usable capability||10, 15, 20 kWh||10 kWh||15 and 20 kWh|
|Steady energy output||7.6 kW||5.76 kW||7.6 kW|
|Peak energy output (60 seconds)||9.12 kW||5.76 kW||9.12 kW|
The Kohler Energy Reserve is available in three totally different sizes: 10 kWh, 15 kWh, and 20 kWh. The battery capability tells you ways a lot electrical energy the battery will retailer, and the way lengthy will probably be capable of run your home equipment for. Providing a wide range of sizes provides householders the chance to decide on what dimension is finest for his or her life-style.
The upper your private home’s energy utilization, the larger the battery you’ll want. Should you use loads of electrical energy, a 20 kWh mannequin could also be the only option to your residence. Nevertheless, most householders can get by simply advantageous with the ten kWh or 15 kWh batteries.
AC and DC-coupled
Except for a wide range of sizes, Kohler additionally presents their batteries in each AC and DC fashions, once more giving householders extra management over their battery system.
An AC-coupled battery is finest paired with an present residence photo voltaic system. The battery has its personal inverter, so it may be simply linked on the AC aspect of the prevailing photo voltaic inverter.
A DC-coupled battery is the higher selection while you’re putting in your photo voltaic panels and battery on the identical time. The DC battery could be put in earlier than the photo voltaic inverter and charged straight with the electrical energy produced by the photo voltaic panels, making them extra environment friendly.
Study extra: AC vs DC-coupled batteries
Continuous power output
Depending on the model you choose, the Power Reserve will release anywhere between 5.76 kW and 7.6 kW of continuous power. “Continuous power output” describes how much electricity a battery can release over an extended period of time, giving you an idea of what appliances it can run.
Most solar batteries today have a continuous power output of 5 kW. So, if you’re looking to run more power-hungry appliances, like a central air conditioner, the Kohler Power Reserve is a good choice.
Peak power output
While continuous power output measures how much power a battery can release over a sustained period of time, peak power output is the maximum amount of power a battery can release for a very short amount of time.
Peak power output is important because many appliances require more power when they turn on, and then draw less once they’re up and running. So, you need your battery to be able to release the amount of energy necessary to turn on your appliances, not just run them.
In the case of the Kohler Power Reserve, the battery will release between 5.76 kW and 9.12 kW of power for 60 seconds, depending on the model. Most batteries on the market today have a peak power output of around 7 kW for just 10 seconds.
If you’re looking to run something like a sump pump or an air conditioner that needs a lot of electricity to power up, any of the Kohler models besides the 10 kWh AC would work best for you.
When power is sent to a battery, some of that electricity is used to facilitate the storing process, which means all of the electricity your panels produce won’t be stored for you to use. The round-trip efficiency of a battery gives you an idea of how much electricity is lost to that storing process.
The higher the efficiency rating, the better. Most batteries today have an efficiency rating of at least 90%, with a lot of them coming in around 95%. The Kohler Power Reserve has a round-trip efficiency of 96.6%, which is good in our book.
The Kohler Power Reserve is a lithium-ion battery. More specifically, it’s a lithium iron phosphate, or LFP, battery. LFP batteries are able to remain stable at high temperatures, making them less likely to overheat and catch on fire than other types of lithium ion chemistries, like nickel manganese cadmium (NMC)-based batteries.
Don’t get us wrong, NMC batteries like the Tesla Powerwall and LG Chem RESU are still perfectly safe to install in your home, so long as they are handled correctly. But, if you want a little more peace of mind, an LFP battery like the Kohler Power Reserve could be the one to go with.
Kohler Power Reserve warranty
The Kohler Power Reserve comes with two different warranties: a product defect warranty and a capacity warranty.
Product defect warranty
Under the product defect warranty, Kohler will cover qualifying defects of its energy storage system for the either of the following warranty terms, whichever comes first:
- 10 years after the initial installation date
- 10 years, starting 4 months after the system has been shipped from the factory
This is pretty standard for product defect warranties. Anything less than 10 years should serve as a red flag.
Solar batteries, just like the batteries in your phone or laptop, lose the ability to hold a charge as time goes on. The capacity warranty gives you some insight into how long the solar battery will last as it is used.
Just like their product warranty, Kohler’s capacity warranty is close to what you’ll see from most solar battery manufacturers. Kohler states that the Power Reserve will operate at a minimum of 70% of its initial capacity during the first 10 years of operation, or until the battery has released 3 megawatt-hours (MWh) per kWh of storage capacity, whichever comes first.
Battery warranty language can be a bit confusing, so let’s simplify this by using the 10 kWh Power Reserve as an example. Based on the warranty terms, the 10 kWh Power Reserve would be able to release 30 MWh (or 30,000 kWh) of electricity before falling below 70% of its original capacity.
But, will you pass the 30 MWh threshold before you reach 10 years? Well, it depends on how the battery is used. If the battery is completely discharged every single day from the initial installation date, you would reach 30 MWh after about 8.22 years, meaning the battery wouldn’t be covered by the warranty for a full 10 years.
In order to actually reach the 10-year mark and maximize the amount of time that your battery is covered by the warranty, you could only use about 82% of the power stored in your battery daily. However, this is the case for most lithium ion batteries for sale today.
Can you go off-grid with the Kohler Power Reserve?
Yes, you can go off-grid with the Kohler Power Reserve. This also means that the battery does not require connection to the grid to operate, making it a great choice for those with a cabin in the woods or a home in a rural area without reliable utility grid access.
Is the Kohler Power Reserve battery worth it?
The Kohler Power Reserve is a great battery. It has impressive specifications like high power output, a decent warranty, and it comes in a variety of capacities so you can choose what size best meets your needs. Not only that, it can be monitored and controlled right from your phone.
The largest draw back to the Kohler Energy Reserve is the worth. At $13,325 for a ten kWh battery earlier than set up prices are thought of, it’s on the pricier aspect. However, the acquisition does embrace an inverter, and also you get all these nice options we talked about earlier. Plus, Kohler is a good model so you may belief that the corporate will be capable to honor their guarantee and supply buyer assist for the lifetime of the battery, do you have to want it.
However, now we have to be trustworthy with you, whether or not it is the Kohler Energy Reserve or not, most householders don’t have to get a photo voltaic battery. Batteries will add upwards of $13,000 to your photo voltaic set up with out offering you very a lot (if any) further electrical invoice financial savings, except:
- Your utility makes use of Time of Use charges
- Your utility doesn’t supply web metering
- Your space experiences frequent extended energy outages
- Maximizing the quantity of unpolluted power your private home makes use of is extraordinarily essential to you
If none of those situations apply to you, investing in a photo voltaic battery doesn’t make a complete lot of sense.
With that mentioned, if you’re undoubtedly out there for a photo voltaic battery and worth guarantee and firm reliability, the Kohler Energy Reserve is value shopping for.
What does make monetary sense for many American householders is switching to photo voltaic. To get an estimate of how a lot it can save you with a solar energy system, take a look at our free and easy-to-use photo voltaic panel value and financial savings calculator. Through the use of the calculator, it’s also possible to see how a lot including photo voltaic batteries will add to your photo voltaic panel set up and the way it will impression your payback interval.
- Kohler Energy Reserve is a lithium ion photo voltaic battery starting from 10 kWh to twenty kWh in dimension.
- The worth of a Kohler Energy Reserve falls between $13,325 and $23,440, earlier than set up prices or incentives.
- The Kohler Energy Reserve has each AC and DC fashions which boast excessive energy outputs and elevated security over different batteries available on the market.
- Kohler presents a guaranty that ensures efficiency at not less than 70% of the unique capability after 10 years, or after 3 MWh of throughput per kWh of storage, whichever comes first.
- The Kohler Energy Reserve is costlier than a few of its opponents, however with nice specs, guarantee, and a stable model legacy backing it up, it’s a nice selection for householders on the lookout for power storage.