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Fortress Power Envy 12kW, 3 eFlex, One Guardian Battery Monitoring, One DuraRack Envy12KW3-BMG-Durarack

Fortress Envy 12kW + 3× eFlex + DuraRack + Guardian

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SKU PES-SPS-SIV-0792

Fortress Power Envy 12kW, 3 eFlex, One Guardian Battery Monitoring, One DuraRack Envy12KW3-BMG-Durarack

$21,126.40 USD

$ $21,126.40 USD

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9+ sold

In the last 7 days

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Unlimited lifetime support, always available.

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What is your return policy?

Returns are free in the first 30 days with no restocking or processing fees, although the customer may be responsible for paying return shipping. See our complete return policy on our Shipping, Delivery, and Returns page linked in the footer of this website.

What’s covered by your return policy?

Our returns policy covers all purchases made through Portlandia Electric Supply. For warranty issues, as authorized distributors, we honor the full manufacturer warranty of ALL the brands on our website. See our complete returns and warranty policies on our Shipping, Deliver, and Returns page.

How long will it take to receive my order?

All orders are processed within 72 hours and you can expect delivery on most orders within 5-7 business days. You will receive access to our customer portal after ordering, where it is easy to track all your shipments. See our Shipping, Delivery and Returns page for more details.

What are your financing and payment options?

We offer several ways to pay to make getting your solar kit simple:

Credit Card: if the purchase is greater than your card’s limit, you can split the cost onto multiple cards as well as Paypal, financing through Affirm, and ACH/bank transfer

You can arrange financing during the checkout process, or scroll further down this page for more details. Please note, if you'd like to finance your order, you can do so instantly, right at checkout.

How does your Lifetime Customer Support work?

Our legendary lifetime customer support has helped make us the #1 online solar retailer! We have a dedicated team of solar professionals standing by to help you navigate the world of solar with ease. From selecting the perfect solar kit to installation and beyond, we provide support and expertise at every step of the journey.If you need help with ordering, shipping, troubleshooting, expanding your system, warranty issues, or anything else you have questions about for as long as you own your Portlandia Electric Supply equipment, we’ve got you covered: we’re always only a phone call or email away.

Fortress Envy 12kW + (3) eFlex 5.4 kWh + DuraRack + Guardian

SKU/MPN: Fortress Envy12KW3-BMG-Durarack • Application: Whole-home backup / grid-tied with storage • Chemistry: LiFePO₄ (48 V)

This Fortress energy system provides a reliable and scalable power solution for modern energy demands. Combining the Envy 12kW inverter with three robust eFlex batteries, this system delivers impressive and efficient energy storage. Designed by the fortress investment group, it ensures seamless backup power and high-performance operation. Each component in this system is built with quality and durability, suited for both residential and commercial applications.

With a strong focus on innovation, the fortress company offers a system that supports energy independence. The product blends advanced energy technology with easy installation and smart monitoring features. Users can trust the fortress investment group backing to guarantee long-term reliability and extended equipment life. This system is engineered to meet the needs of today’s power users while providing future-ready upgrade options.

What’s included in the Fortress package

1× Envy True 12 kW Hybrid Inverter featuring 200 A AC passthrough and 3 MPPT trackers. The inverter is rated NEMA 4X/IP65 for solid outdoor performance. It measures 34.2 × 20.5 × 11.2 inches and weighs 127 lbs. :contentReference[oaicite:17]{index=17}
3× eFlex 5.4 kWh Batteries that deliver roughly 16.2 kWh total energy capacity. These LiFePO₄ batteries support around 8,000 charge cycles, ensuring longevity. Each battery is approximately 21.3 × 17.5 × 7.2 inches and weighs 108 lbs. :contentReference[oaicite:18]{index=18}
1× DuraRack Outdoor Enclosure, designed to hold up to 4 eFlex batteries safely. It holds a rating of IP65/NEMA 3R, making it ideal for outdoor use. The enclosure size is 29.88 W × 41.97 H × 17.83 D inches and it weighs 153.2 lbs. :contentReference[oaicite:19]{index=19}
1× Guardian Gateway, which provides detailed battery-level monitoring, remote firmware updates, and technical support. The device measures 7.25 × 6 × 1.25 inches and weighs 0.8 lbs. :contentReference[oaicite:20]{index=20}

Fortress system highlights

Hybrid flexibility: This Fortress system supports both AC and DC coupling to maximize flexibility. It also allows for generator input and fast transfer times to ensure quick backup power transitions. :contentReference[oaicite:21]{index=21}
Scalable & code-ready: Users can parallel up to 10 Envy units for system scalability. The system complies with UL1741SB and IEEE 1547 safety and grid interconnection standards. :contentReference[oaicite:22]{index=22}
Outdoor-rated hardware: The Envy inverter features a durable NEMA 4X/IP65 rating. The DuraRack enclosure provides IP65 protection and comes with built-in busbars and cabling to simplify installation. :contentReference[oaicite:23]{index=23}
Battery-level visibility: The Guardian app monitors State of Charge (SoC), voltage, current, and temperature on a per-battery basis for optimal system management. :contentReference[oaicite:24]{index=24}

Fortress Key specs

Total Energy	~16.2 kWh (3 × 5.4 kWh eFlex)
Inverter Output	12 kW continuous; 120/240 V split-phase (supports 120/208 V with appropriate setup)
PV Input	Supports up to 21 kW PV with 3 MPPT maximum power point trackers
Enclosure Rating	Envy NEMA 4X/IP65; DuraRack IP65/NEMA 3R ensures protection for outdoor use
Approx. Shipping Weight	~605 lb combined (components listed above)
Primary Enclosure Size	DuraRack 29.88 W × 41.97 H × 17.83 D in

Fortress included documentation

Envy 12 kW Datasheet & Installation Manual
eFlex 5.4 Datasheet & Installation Manual
DuraRack Datasheet
Guardian Datasheet

Always size conductors/OCPD correctly. Follow code clearances recommended in manuals and local regulations to ensure safety.

The fortress company’s strong commitment to advanced technology makes this system perfect for today’s energy needs. Backed by fortress investment, this product delivers unmatched reliability and extended lifespan. Its design allows straightforward installation along with smart monitoring features. This fortress investment group-supported solution ensures continuous power for your home even when grid power is unavailable. With this system, users gain both energy independence and peace of mind for the future.

What is your return policy?

What’s covered by your return policy?

How long will it take to receive my order?

What are your financing and payment options?

We offer several ways to pay to make getting your solar kit simple:

Credit Card: if the purchase is greater than your card’s limit, you can split the cost onto multiple cards as well as Paypal, financing through Affirm, and ACH/bank transfer

You can arrange financing during the checkout process, or scroll further down this page for more details. Please note, if you'd like to finance your order, you can do so instantly, right at checkout.

How does your Lifetime Customer Support work?

Fortress Envy 12kW + (3) eFlex 5.4 kWh + DuraRack + Guardian

SKU/MPN: Fortress Envy12KW3-BMG-Durarack • Application: Whole-home backup / grid-tied with storage • Chemistry: LiFePO₄ (48 V)

What’s included in the Fortress package

1× Envy True 12 kW Hybrid Inverter featuring 200 A AC passthrough and 3 MPPT trackers. The inverter is rated NEMA 4X/IP65 for solid outdoor performance. It measures 34.2 × 20.5 × 11.2 inches and weighs 127 lbs. :contentReference[oaicite:17]{index=17}
3× eFlex 5.4 kWh Batteries that deliver roughly 16.2 kWh total energy capacity. These LiFePO₄ batteries support around 8,000 charge cycles, ensuring longevity. Each battery is approximately 21.3 × 17.5 × 7.2 inches and weighs 108 lbs. :contentReference[oaicite:18]{index=18}
1× DuraRack Outdoor Enclosure, designed to hold up to 4 eFlex batteries safely. It holds a rating of IP65/NEMA 3R, making it ideal for outdoor use. The enclosure size is 29.88 W × 41.97 H × 17.83 D inches and it weighs 153.2 lbs. :contentReference[oaicite:19]{index=19}
1× Guardian Gateway, which provides detailed battery-level monitoring, remote firmware updates, and technical support. The device measures 7.25 × 6 × 1.25 inches and weighs 0.8 lbs. :contentReference[oaicite:20]{index=20}

Fortress system highlights

Hybrid flexibility: This Fortress system supports both AC and DC coupling to maximize flexibility. It also allows for generator input and fast transfer times to ensure quick backup power transitions. :contentReference[oaicite:21]{index=21}
Scalable & code-ready: Users can parallel up to 10 Envy units for system scalability. The system complies with UL1741SB and IEEE 1547 safety and grid interconnection standards. :contentReference[oaicite:22]{index=22}
Outdoor-rated hardware: The Envy inverter features a durable NEMA 4X/IP65 rating. The DuraRack enclosure provides IP65 protection and comes with built-in busbars and cabling to simplify installation. :contentReference[oaicite:23]{index=23}
Battery-level visibility: The Guardian app monitors State of Charge (SoC), voltage, current, and temperature on a per-battery basis for optimal system management. :contentReference[oaicite:24]{index=24}

Fortress Key specs

Total Energy	~16.2 kWh (3 × 5.4 kWh eFlex)
Inverter Output	12 kW continuous; 120/240 V split-phase (supports 120/208 V with appropriate setup)
PV Input	Supports up to 21 kW PV with 3 MPPT maximum power point trackers
Enclosure Rating	Envy NEMA 4X/IP65; DuraRack IP65/NEMA 3R ensures protection for outdoor use
Approx. Shipping Weight	~605 lb combined (components listed above)
Primary Enclosure Size	DuraRack 29.88 W × 41.97 H × 17.83 D in

Fortress included documentation

Envy 12 kW Datasheet & Installation Manual
eFlex 5.4 Datasheet & Installation Manual
DuraRack Datasheet
Guardian Datasheet

Always size conductors/OCPD correctly. Follow code clearances recommended in manuals and local regulations to ensure safety.

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Customer Success Stories

Troy P

EG4 off-grid base kit, Happy with my purchase.

This is the first stage of my three planned purches. I got the eg4 inverter 6000 XP base kit with six 400 watt panels and the two server rack batteries. Did a little online research and followed the instructions and it got set up without any issues. Right now I'm just running it in my garage on a single outlet and have been running dual 750 watt water distillers with it. Once I get the second inverter and a bunch more panels and batteries, I plan on attaching it to my subpanel in my house that has my lights and outlets and appliances on it. Then I'll get a soft start for my AC and blower and run it on my main panel.

Jacob B

Easy Process, Genuine Support

Trying to pick the correct solar system for your needs can be very technical and frustrating. I wanted to thank Yvhan and the Portlandia Electric supply team for their patience and helpful attitudes through multiple calls. I feel like we were able to narrow it down to what worked for me and my family. My system works great and I couldn't be happier to have picked Portlandia Electric Supply.

Patrick B

Off Grid Solar Purchase

I wanted to get an offgrid solar system for years but didn’t know where to start. I found Portlandia Electric Supply on Facebook and decided to submit a quote. Within 24 hours I had a custom proposal that was almost half the price of the companies I had previously got quotes from. My wife and I decided to order online and the kit came in a timely manner and it was an easy install. Great company to work with!

James Martin

Highly Recommend

I would like to take the time to express the outstanding service that I was provided with by Portlandia Electric Supply. They provided me with all the answers to my questions, and after reviewing our quote over the phone I felt comfortable proceeding to order my kit. It’s exactly what I needed and they were there to help us over the phone when we had questions installing it. I highly recommend others in need to choose Portlandia Electric Supply.

Brian H

Solar Kit for Mobile Work Van

As a professional videographer, I needed reliable power on the go.Portlandia Electric Supply Delta Pro and roof-mounted panels were the perfect solution. Setup was easy, and the kit included everything needed. The Delta Pro powers my cameras, lights, laptop, and a small fridge with impressive battery capacity.

Keith S

Best Tech Support

You folks have been wonderful guiding me through the ins and outs of going solar. Plus your tech guys Rod and Nelson are the absolute best. They explained all the different aspects of inverters, batteries and how to keep them in top condition. Too much more to put here… but no other company has the 100% tech support you provide for your customers!

Coll A

Great Experience

My experience with Portlandia Electric Supply has been excellent. Before the sales, they answered all my questions to assure that I got what I needed. After the sales they continued to support me with answers and help. I had a warranty issue with a unit, and it was handled as well as possible. I would recommend them to anyone looking to go solar.

Troy P

EG4 off-grid base kit, Happy with my purchase.

Jacob B

Easy Process, Genuine Support

Patrick B

Off Grid Solar Purchase

James Martin

Highly Recommend

Brian H

Solar Kit for Mobile Work Van

Keith S

Best Tech Support

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