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Sitewide SALE: 100 OFF on select brands + Free Shipping* on select items. Price Match Guarantee on all products. Some exclusions apply.
Sitewide SALE: 100 OFF on select brands + Free Shipping* on select items. Price Match Guarantee on all products. Some exclusions apply.
Fronius Primo 12.5kW 4,210,077,800 240/208VAC TL Inverter

Fronius Primo 12.5kW 4,210,077,800 240/208VAC TL Inverter

by Fronius
SKU USIN100-0472
$3,618.00 - $3,618.00
$3,618.00
$3,618.00 - $3,618.00
$3,618.00
  • Authorized online dealer
  • Transparent pricing. Any delivery cost is confirmed before processing*
  • Typical delivery 4 to 7 business days on standard shipments*
  • Price Match Guarantee. We beat verified prices
  • 30 day returns on eligible items
  • Manufacturer warranty included
  • No sales tax in most states*

Questions? Text or call +1 (307) 248-7227

*Exclusions apply. Freight, oversized items, made-to-order items, or remote delivery may require additional delivery time and cost confirmation. See Shipping and Returns.

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Price Match Guarantee at OffGrid Lux

At OffGrid Lux, we're committed to offering you the best prices online. That's why we have a Price Match Guarantee in place. If you find a lower price for the same product elsewhere, we'll match or beat it to ensure you get the best value.

For full details on our Price Match Guarantee, including eligibility criteria and how to request a price match, please click here to view our complete policy.

Shipping & Order Policy at OffGrid Lux

When you place an order, we confirm stock availability before charging your card. Orders typically process within 1-2 business days, and shipping is fast—most orders arrive within 4-7 days. We use reliable third-party carriers and provide tracking information promptly.

For more details, click here to view our full Shipping Policy.

Refunds & Returns at OffGrid Lux

We're committed to your happiness with every purchase. Need assistance? Just reach out. You have 30 days from delivery to return items in their original condition. We process refunds promptly, usually within 3 business days of receiving your return.

For more info, check out our full Returns & Refunds Policy here.

Fronius Primo 12.5kW 4,210,077,800 240/208VAC TL Inverter

Explore the Fronius Primo 12.5-1, a top-tier single phase string inverter designed for residential solar installations. Combining efficiency with innovative technology, it offers unmatched performance in converting solar energy to usable power, making it a smart choice for homeowners looking to maximize their solar investment.

  • Advanced MPPT technology for optimal solar harvest and efficiency.
  • Integrated Wi-Fi and Ethernet connectivity for easy monitoring and management.
  • Seamless integration with Fronius Solar.web for real-time system analysis.
  • Smart Grid Ready, ensuring compatibility with future energy markets.
  • Unique SnapINverter mounting system for quick and secure installation.

Technology and Overview

The Primo 12.5-1 utilizes state-of-the-art MPPT technology and cooling systems to ensure maximum power output and longevity, making it an ideal solution for residential PV systems.

Installation and Compatibility Overview

Featuring a flexible and straightforward installation process, the Primo 12.5-1 is compatible with a wide range of PV panels and grid configurations, ensuring adaptability to virtually any home setup.

Benefits and Applications Overview

With its high efficiency and advanced monitoring capabilities, the Fronius Primo 12.5-1 not only reduces electricity bills but also contributes to a sustainable future. Perfect for residential applications seeking reliable solar solutions.

Specification Value
Model Primo 12.5-1
Recommended PV Power 10.0 - 15.0 kW
Max. Input Current (MPPT 1/MPPT 2 - 33.0 A / 18.0 A) (MPPT 1+MPPT 2 - 51 A)
Nominal Input Voltage 665 V
Max. Input Voltage 1000 V
Max. Output Power (208V / 240V) 12500 VA
Max. Continuous Output Current (208V / 240V) 60.1 A / 52.1 A
Frequency Range 45-55 Hz / 50-66 Hz
Max. Efficiency 96.7%
CEC Efficiency 96.0% / 96.5%
Cooling Active cooling
Warranty 10 years, extendable up to 15 and 20 years
Free Shipping & No Tax to the United States

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Excellent Customer Service

Questions? Give us a call +1(307) 248-722

Let customers speak for us

from 31 reviews
on the ball

From day one when I ordered a eahora romeo 2 2025 off grid lux has been in constant contact . From shipping the bike to after care I haven't had issues at all . They even called me to check on an issue I had and I actually spoke to a person , who was great by the way . Customer service has fallen to the big internet conglomerates but I didn't feel that way with the purchase , they have really tried to take care of me and answered every question I've asked , even ones that are stated on the site . Im happy I went with them .I hope I can purchase other stuff in the future here .
The products won't be flawless but their customer service is . Thanks again Greg

greg decedue
Eahora Romeo Pro II 2025 Ebike 52V Dual 2000W Motors 200 Miles
Eahora Romeo Pro II 2025 Ebike 52V Dual 2000W Motors 200 Miles
If you are professional or a weekend smoker

If you are professional or a weekend smoker.this is a most have. One bit of advise learn the air

Eric Lister
OffGrid Lux
Damaged upon arrival, stellar customer service

Mototec Raider, paid for assembly, arrived with flat tire, dangling cracked headlight, scratched and scuffed. Customer service very responsive and able to resolve issues and make it right. They answer the phone and actually talk to you!
Recommended!

Edmund Siragusa
OffGrid Lux
Extra battery for Ecotric Leopard

I bought an extra battery to increase my ebike range. Of all the sites I looked at, I was sure this one would fit my battery mount because it was labeled correctly. Not true of other sites. They shipped quickly and the battery was packed properly. Good business--would easily buy from this site again.

Mitchell Stocker
OffGrid Lux
Received product in a timely

Received product in a timely fashion

Daniel Marck
OffGrid Lux
Amazing ribs

Well built and easy to operate and clean. Effortless cooking and amazing pork ribs.

Anonymous
Old Country BBQ Pits Insulated Gravity Fed Charcoal Smoker GF-L-34X40
Old Country BBQ Pits Insulated Gravity Fed Charcoal Smoker GF-L-34X40
Excellent customer service

The whole process from ordering through receipt with Off Grid Lux was seamless. They responded quickly to our initial questions and helped us decide on the best product to suit our needs. There was a small hiccup with the shipment delivery (the fault of the carrier) and Odd Grid Lux contacted the carrier immediately and had our issue resolved. We researched many vendors before deciding on Off Grid Lux and their pricing and customer service cannot be beat.

J. Pierson
Arkpax Ark Portable Power Station | 1500Wh | 1800W | IP67 Rated Water-Resistant and Dustproof
Arkpax Ark Portable Power Station | 1500Wh | 1800W | IP67 Rated Water-Resistant and Dustproof

Love it

Curry
MotoTec Raven 60v 30ah 2500w Lithium Electric Scooter
MotoTec Raven 60v 30ah 2500w Lithium Electric Scooter
Great company and was a little hesitant at first!

Was a little nervous at first but Christian was GREAT. Company honored everything stated, customer service top notch and Fantastic communication. Need to give them a try to see how they can service and help you!

Mike s.
OffGrid Lux
Venom

This bike gave me a rush when I first rode it. Everything about it is completely unmatched. Drive one and you'll get a rush too.

Pete Schoeffler
MotoTec Venom 72V 12000W Electric Dirt Bike
MotoTec Venom 72V 12000W Electric Dirt Bike
Battery works and lasts a long time!

I bought this battery to replace my battery that died in my Ecotric 20810 (the fat tire one from around 2019 timeframe). Went on a 2+ hour ride and still had plenty of juice to spare. Wish it was cheaper but....it's a big battery and that's the retail price I guess.

Alex
Ecotric 36V 12.5Ah Replacement Battery for Fat Tire & Folding Ebikes
Ecotric 36V 12.5Ah Replacement Battery for Fat Tire & Folding Ebikes
Awesome bike.

Awesome bike. Was delivered on time. Bike was in good condition, no dings or dents. This website had the best price available.

joey jennings
MEELOD DK300 PRO 20" Retro Moped Style Electric Bike 1200W Peak Motor 48V 15Ah Dual Batteries
MEELOD DK300 PRO 20" Retro Moped Style Electric Bike 1200W Peak Motor 48V 15Ah Dual Batteries
Rockstar Customer Service

Ordered four inverters for a customer whose solar system was damaged by a utility surge. OffGridLux advertised these inverters at $2500. Upon ordering the inverters I was assured they were in stock and would be delivered. The next day I received a refund and the price of the inverters went up from $2500 to $3100 on the OffGridLux website. Chris in customer service explained the inverters were a new product and the $2500 price was added by mistake and the real price was $3100. He also told me his warehouse made a mistake they only had 2 of the 4 available. After expressing my frustration at the situation since the customer was already quoted the lower price, Chris worked out a deal and gave us the inverters at cost to OffGridLux for $2850 instead of $3100. Chris promptly adjusted the charge and made sure the 2 inverters were shipped out asap. As a small business owner I understand how small mistakes can be costly and sometimes the little things are the biggest problem. In good fashion Chris represented OffGridLux and my interests by communicating and figuring out an amicable solution for all parties involved. Thank you again Chris. You sir a true asset to your company.

Four Bird Energy
OffGrid Lux

Nice bike love the looks not as powerful as my pro 2 as one might expect but overall nice bike i did take it on a 47 mile trip and still had 50.1 percent left when i got home so no need to worry about a battery the best part of this bike is the company that sold it. I've been so impressed with this company which is why i purchased my 2nd bike from them they are nothing short of exceptional buy with confidence they are with your every step of the way and very fast to respond to emails and help with any problem ive come across i wish they sold other bikes just so i could buy from them off the grid lux is by far my favorite store keep it up guys I'll keep looking to see what you stock next

B.
Eahora Romeo II Ebike Dual Motors 52V 60Ah 40 MPH
Eahora Romeo II Ebike Dual Motors 52V 60Ah 40 MPH
Eahora romeo pro 2

This place is one of the best companies I've ever purchased from they have excellent customer service fast shipping and answer all your questions in a timely manner i love my bike i had a small problem which they quickly addressed i have been extremely impressed with how helpful they have been i highly recommend this company I promise you won't regret it

John
OffGrid Lux

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