Aug. 18, 2025
It appears that any combination of batteries, whether 1 big battery or 10 little ones, counts towards the limit.Very annoying.
It's a real pain in the ass...
I've also been poking around trying to understand this. How would HomeGrid be allowed to have a stack of more than 20 KWH?My guess is simply that if you go above the 20kWh in one location, or max per area (say 80kWh in a garage) then this line is what becomes relevant:
So, if that is the case, would it be fair to say that any/all EG4 server racks with six of their batteries is "illegal" or maybe I should say, "not code compliant"?Correct. You can put 3 in a rack, and have a 2nd rack 3 feet apart. You can also add one more battery 3 feet from that.
So again, is it a single battery, or combination of batteries in one location without spacing? I'll be fine with the 80kWh total in the garage, but I want to ensure I'm not stacking six server rack batteries right next to each other and creating a violation right out of the gate.No, it is 40kWh in the Garage. The combined Garage, Accessory Structure, and Outdoors cannot excess 80kWh.
I've also been poking around trying to understand this. How would HomeGrid be allowed to have a stack of more than 20 KWH?They are capable of being stacked to 38.4 kWh per stack.
No, it is 40kWh in the Garage. The combined Garage, Accessory Structure, and Outdoors cannot excess 80kWh.I'm certainly not here to say you are wrong, as I don't know the rules well enough to determine, but based on that article and the image I posted from said article, it's stating 80kWh in the garage.
In addition, you get 40kWh in Utility Closets and Storage Spaces (inside the house).
Total of 120kWh per house.
Seems pretty simple.I'm all for that, I just don't want to have an unrelated fire or something down the road and have my batteries become a point of contention for an insurance payout.
1. 3 batteries per rack.
2. Pass inspection.
3. Add 3 more batteries per rack.
Problem solved.
And just for me.
4. Get 3 more racks. lol
I'm all for that, I just don't want to have an unrelated fire or something down the road and have my batteries become a point of contention for an insurance payout.That would depend on what your inspector wants.
Also, any reason the batteries "need" to be in a rack? I've got mine on top of a gun safe, it's a convenient location, keeps my child from being able to reach them and efficient use of space. Not sure that would make any difference?
That would depend on what your inspector wants.It pays to have a nice inspector haha!
I would think that if everything is covered and protected from contact, it should be fine. But, it's really up to your inspector.
It pays to have a nice inspector haha!I'm definitely not code compliant. lol
Now, for someone like you that has 76.8kwh of DIY batteries, are you just "not code compliant" in their eyes?
God I get tired of the rules!
I'm certainly not here to say you are wrong, as I don't know the rules well enough to determine, but based on that article and the image I posted from said article, it's stating 80kWh in the garage.Must have changed since I learned about it. I can find a edition that has the 40 + 80 you mentioned, plus 80 on exterior wall, and another 80 "outside".
Must have changed since I learned about it. I can find a edition that has the 40 + 80 you mentioned, plus 80 on exterior wall, and another 80 "outside".Gotcha. I’m still bummed about how this is written. I’ve got PLENTY of room on top of my gun safe for 7-8 batteries, yet now I’m restricted to 3. Certainly not convenient.
Seems pretty simple.Quiet You!
1. 3 batteries per rack.
2. Pass inspection.
3. Add 3 more batteries per rack.
Problem solved.
And just for me.
4. Get 3 more racks. lol
Energy storage systems (ESS) are quickly becoming essential to modern energy systems. They are crucial for integrating renewable energy, keeping the grid stable, and enabling charging infrastructure for electric vehicles. To ensure ESS’s safe and reliable operation, rigorous safety standards are needed to guide these systems’ design, construction, testing, and operation. UL is a comprehensive safety standard developed by UL (Underwriters Laboratories) for ESSs with strict safety, performance, and reliability requirements.
You can find more information on our web, so please take a look.
UL is a safety standard for energy storage systems that UL developed. The standard provides a roadmap for ensuring that ESS works safely and reliably. It covers how these systems are designed, built, tested, and used. UL has strict requirements for electrical safety, thermal safety, mechanical safety, fire safety, system performance, system reliability, and system documentation. Most people agree that the standard is a benchmark for the safety and performance of ESS. The American National Standards Institute (ANSI) and the Standards Council of Canada (SCC) have approved UL.
UL doesn’t cover the components of an energy storage system on its own. Instead, it looks at the system as a whole after all the components have been integrated into it. UL covers both stationary installations, indoor and outdoor, and mobile energy storage systems for commercial and residential applications. UL covers different energy storage systems, including electrochemical ESS, chemical ESS, mechanical ESS, and thermal ESS. This could include battery energy storage, flywheels and even fuel cells.
For an energy storage system (ESS) to be listed by UL, it must meet the requirements in the standard. This includes requirements for electrical safety, thermal safety, mechanical safety, fire safety, system performance, system reliability, and system documentation. To meet these requirements, an ESS must undergo rigorous testing and certification, including factory inspection, testing, and follow-up inspections, to ensure they meet the criteria in UL.
When UL has received samples from the manufacturer, done a series of tests, and found that the product meets the necessary safety requirements, the ESS is said to be UL listed.
With competitive price and timely delivery, CHANGINGTECH sincerely hope to be your supplier and partner.
UL, as previously mentioned, is a set of standards that an energy storage system (ESS) must meet. ULa is a method of evaluating thermal runaway in an ESS; it provides additional requirements for battery management systems (BMS) used in ESS. It covers the BMS functions and performance, including battery safety, performance, and communication protocols. Ultimately ULa verifies the effectiveness of the ESS protection levels against critical thermal runaway and fire hazards. Testing for ULa is done in four steps.
UL is important for energy storage systems (ESS) because it provides a comprehensive roadmap for ensuring their safe and reliable operation. The standard sets rigorous requirements for the design, construction, testing, and operation of ESS, including batteries, to ensure their safe and reliable operation. By following the requirements of UL, ESS can be designed and operated to minimize the risk of electrical shock, thermal runaway, mechanical failure, fire, and other safety hazards. This helps ensure that ESS are safe for both operators and the public and can be relied upon to perform their intended function. Many of EVESCO’s all-in-one energy storage systems are listed by UL to ensure they are as safe and reliable as possible.
Applications for energy storage systems vary depending on the need of the energy. Regardless of the applications, UL can evaluate an ESS for safety. Below are some common examples of applications where a UL-listed energy storage system could be beneficial.
• Frequency support and regulation
• Capacity reserve
• Energy Shifting
• Electric vehicle supply equipment
• Voltage support and regulation
• Telecom
• UPS
• Other utility-grid support services
For more information, please visit Residential ESS Manufacturer.
Previous: None
Next: None
If you are interested in sending in a Guest Blogger Submission,welcome to write for us!
All Comments ( 0 )