SKU: 94783986614

Fortress Power Envy Duo 21 Hybrid Inverter | 48V | 25kW PV Input | 12kW Backup | 240V Split-Phase & 208V 3-Phase | Parallel to 120kW | 10-Year Warranty

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Ships within 48 hours · Estimated delivery Aug 26 - Aug 31

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Description

Fortress Power Envy Duo 21 Hybrid Inverter | 48V | 25kW PV Input | 12kW Backup | 240V Split-Phase & 208V 3-Phase | Parallel to 120kW | 10-Year WarrantyPower larger solar + storage systems with the Fortress Power Envy Duo 21, a high capacity 48V hybrid inverter built for demanding residential and light commercial energy needs. With up to 25kW PV input, dual voltage compatibility (240V split phase 208V three phase), and scalable paralleling up to 120kW, its a future ready solution for backup power, off grid setups, zero export, TOU optimization, and more. Key Features & Benefits: High PV input

Power larger solar + storage systems with the Fortress Power Envy Duo 21, a high-capacity 48V hybrid inverter built for demanding residential and light commercial energy needs. With up to 25kW PV input, dual-voltage compatibility (240V split-phase / 208V three-phase), and scalable paralleling up to 120kW, it’s a future-ready solution for backup power, off-grid setups, zero-export, TOU optimization, and more.

Key Features & Benefits:

  • High PV input capacity: Supports up to 25kW PV array power for larger residential or light commercial solar arrays

  • Dual voltage compatibility: Works with 120/240V split-phase and 120/208V three-phase configurations

  • Reliable backup output: 12,000W continuous backup power (240V or 208V) with <20ms switching time

  • Higher grid output with PV: Up to 16,000W @ 240V (or 13,800W @ 208V) when PV is available

  • Seamless battery integration: Designed to pair with Fortress Power 48V batteries (40–60V range) for stable backup performance

  • Scalable system design: Parallel up to 10 units (120kW total) to expand as energy demands grow

  • Install-friendly, code-compliant hardware: Built-in AC/DC breakers + integrated rapid shutdown transmitter

  • Remote monitoring + updates: Monitor production/consumption and perform remote firmware updates via Fortress Power mobile app (where supported)

  • Built for tough environments: NEMA 4X / IP66 enclosure, smart cooling fans, and touch color display

Quick Specs:

  • MPPTs: 3 (inputs per MPPT: 2:2:1)

  • Max PV Array Power: 25,000W | Max PV Power: 21,000W

  • Continuous Output (Battery Only): 12,000W @ 240V or 208V

  • Max Output w/ PV: 16,000W @ 240V | 13,800W @ 208V

  • Efficiency: 97.5% max PV-to-grid | 96.9% CEC

  • Comms: RS485 / Wi-Fi / CAN

  • Size / Weight: 22.3 x 35.2 x 11.2 in | 125.71 lb

  • Warranty: 10 Years

What’s in the Box (Unboxing):

  • 1 x Envy inverter with hole knockout caps 

  • 1 x Wall mount bracket

  • 2 x L-shaped braces

  • 1 x Battery RJ45 adapter

  • 1 x Installation/User manual

  • 2 x Current transformers (CT) (connected by one cable)

  • 1 x Dongle

  • 2 x Battery-to-inverter comm cable + inverter-to-inverter comm cable

  • 4 x RJ45 terminals

  • 6 x Mounting screws (wood)

  • 6 x expansion screws

  • 4 x Cross head screws: L-brace + dongle

  • 1 x Knockout hole template

User Manual / Documents:

Shipping Notes
  • Free Standard Shipping on $100+ Orders to the USA.
  • Except Preorder products are shipped in 48 hours.
  • Delivery to the USA:
  1. Standard Shipping : 3-10 business days
  • If time is of the essence, please consider selecting expedited delivery for faster service.
Exchange/Return Notes
  • We offer a 30-day return/exchange service after receiving.
  • Final sale items are not eligible for returns or exchanges.
  • To process your return/exchange, please contact us at [email protected]
  • Please click here for more details>>> Return & Exchange Policy
SKU: 94783986614

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4.2 ★★★★★
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A
Verified Purchase
Altairjones
Dallas, US
★★★★★ 3
I’m a little disappointed.
Format: Kindle
I usually like Jillian West’s books but this one was missing a lot for me. The pregnancy didn’t come across as real. She’s on her feet for 12 hour days but is perfectly healthy at 8 months pregnant? Yet the week she moves in all of a sudden she’s not? She is planning on actually running during one of the plot buildups. But at 8 months pregnant that’s incredibly hard to do. The lack of breathing ability and lung space, the change in body center, mass, and gravity. All of it prohibits running, unless you’re an athlete this didn’t come off as at all realistic. I didn’t feel any connection with the alphas. There wasn’t any emotional connection. It could be because of the tense it was written in. But I didn’t get any deep feelings out of this. It came across as checking off boxes. Even the spicy scenes weren’t really believable for me. I wanted to see them fall for her, and it just kind of all fizzled. Even Bishop. One thing I did really like was the ending. I did not see it coming and I’m interested in reading book two because of it. But on the whole this book was mostly disappointing for me.
WAS THIS REVIEW HELPFUL?YesReportShare
Reviewed in the United States on March 16, 2024
M
Verified Purchase
Melissa Williams
Chelsea, US
★★★★★ 4
4.25 stars
Format: Kindle
Vale is an 8 month pregnant omega working as a waitress at a strip club and a cam girl. She starts to get very creepy vibes from a regular at the club, and her baby daddy ghosted her. She has had an online relationship with a man named Bishop through her cam girl status. One night, bishop was paying to watch her sleep and ansthe creepy regular Andrew break in and watch her sleep he tells vale to come to him at his business now. She flees and finds herself at a large security company with some.hot of alphas who are there to help her. This imegaverse is a little different than I have read, but I am thoroughly enjoying it. Vale is not a traditional omega she was raised by a single beta mom, and the alphas are not normal alphas they have never really loved pack life. But they are ruthless mercenaries. They need her, and she needs them. I love the aspect of the stalker and now the plot twists at the end, so so good. Sometimes, it seemed a little slow and stale mated, but since this a duet, I think It was just her starting to have Vale get to know her alpha suitors. Cliffhanger for sure with this one.
WAS THIS REVIEW HELPFUL?YesReportShare
Reviewed in the United States on September 9, 2024
A
Verified Purchase
Austin & Cambria
Chelsea, US
★★★★★ 5
That ending 😫
Format: Kindle
I fell into a false sense of security and really thought this was gearing towards a happy ending. Then I realized there’s no work they don’t punish Andrew. I really liked Vale’s character. I don’t normally read books with pregnancy but going into this knowing she was pregnant made it more enjoyable for me. I loved Bishops devotion to her and her happiness. I also loved that Holt and Mercy couldn’t fight their attraction to her. I love scent matches so very much. I’m so curious to see how this duet will end up. And I need to pay more attention and notice that a book I’m starting is a duet to begin with lol
WAS THIS REVIEW HELPFUL?YesReportShare
Reviewed in the United States on February 21, 2025
S
Verified Purchase
Sarah A
Phoenix, US
★★★★★ 5
oh wow
Format: Kindle
I just knew there was something about Cooper! I’m wondering if he’s about to be included but damn I’m glad he’s at least not a rapist and creepy guy, he just got called on assignment and had to go! This should be interesting! She’s gonna run and then what’s his face is gonna grab her. I’m worried! Wow that was a great book and cliffhanger! Loving this!
WAS THIS REVIEW HELPFUL?YesReportShare
Reviewed in the United States on December 27, 2025
J
Verified Purchase
Jewell Urbano
Los Angeles, US
★★★★★ 5
Wow.
Format: Kindle
Okay I’m usually not one for stand-alone’s I’m an avid series reader but my goodness am I so happy I read this! This story was brilliant & so absolutely mesmerizing. I loved reading about each character and their struggles as well as what helped them to move forward. The ending definitely brought tears to my eyes so hard. I truly wasn’t expecting some of what happened in this story. There is about to be a spoiler I am going to reveal so please stop reading if you don’t want the spoiler !!!! ⚠️ ⛔️ ‼️ I loved that the author didn’t do what most authors do with irredeemable male characters. I truly was hoping that Nate Jr. would be apart of the pack after the way he treated Astrea bc he truly didn’t deserve it. Though I must say you did a wonderful job or redeeming him as a person. I cried my eyes out when he walked into the story. I was truly terrified he was going to be a bad guy to the end. However you truly did him such a justice by having him realize his faults & having him redeem himself in the most wonderful way. I’m so sad that he didn’t get to hear how much his brother loved him & forgave him before dying. But again you wrote that ending so beautifully & I just can’t express how much I loved this story & how you took a different route than most authors I have read have. You are a remarkable author Cinder Blaze & I thank you generously for creating such a masterpiece.
WAS THIS REVIEW HELPFUL?YesReportShare
Reviewed in the United States on April 28, 2025

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