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EG4-FlexBOSS21 Inverter | 48V Split Phase | 21kW PV Input & EG4-GridBOSS MID | 200A Service Entrance with 90A Breaker [BNDL-E00019]

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✓ FREE Shipping Over $3000
✓ Questions? Talk to a EG4 Expert: 1-303-876-7654
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$6,048.00
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Upgrade Your Solar Setup with FlexBOSS21 & GridBOSS!

Experience true whole-home backup with EG4-FlexBOSS21 Inverter and EG4-GridBOSS MID. These cutting-edge systems eliminate the need for costly main panel upgrades or critical load subpanels, saving you up to $7,500 in installation costs. Designed for maximum efficiency and minimal grid reliance, these energy solutions offer a superior return on investment. Take control of your energy needs with the industry's most versatile backup solutions.

 

EG4 FlexBOSS21 Hybrid Inverter | 48V Split Phase | 21kW PV Input

EG4 FlexBOSS21 Hybrid Inverter | 48V Split Phase | 21kW PV Input

The EG4 FlexBOSS21 is a versatile 48V split-phase, hybrid inverter/charger that offers the same dependable power as the 18kPV with enhanced flexibility. Powerful enough to start a 5-ton AC unit, the FlexBOSS21 supports 21kW of PV input. Capable of paralleling up to 10 units together, the FlexBOSS21 has an impressive total output of 160kW. Three MPPTs give users optimal control over their solar needs, while the updated EG4 monitoring software allows for convenient total remote management, complete with mobile notifications and remote setting. Seamless interaction with GridBOSS gives users control over their entire Energy Storage System (ESS).

Features:

  • Flexible Power Options: Operate off-grid, with grid support, or sell excess power back to the grid.
  • High PV Input Voltage: Supports up to 600V DC, allowing reduced cable sizes.
  • Smart Connectivity: Remote access with Wi-Fi and closed-loop communication with compatible batteries.
  • Safety-First Design: Includes rapid shutdown, ground fault monitoring, arc-fault protection, and robust safety certifications.

EG4 GridBOSS Micro-Grid Interconnection Device (MID)

The EG4 GridBOSS MID simplifies your Energy Storage System (ESS) by consolidating up to 10 components into a single, powerful unit. Designed to seamlessly connect utilities, generators, inverters, and loads, it offers centralized control, easy installation, and real-time remote monitoring.

Features:

  • One-Point ESS Control: Connect and manage utility, inverters, generator, and loads from a single device.
  • Reduced Complexity: Replace breakers, transfer switches, and more with one compact solution.
  • Smart Load & Power Shedding: Automate power management to optimize battery performance.
  • 200A Service Entrance: Reliable with a 22 kAIC main breaker for powerful service integration.
  • Real-Time Monitoring: Access and adjust settings remotely via the EG4 app or monitoring system website.
  • Configurable Breakers: Supports one generator up to 125A, 3 hybrid inverters up to 90A each, and 4 smart ports ranging from 60A to 125A.

Breaker Disclaimer:

The EG4 GridBOSS is equipped with 70A breakers to be used with the EG4 18kPV. This kit (SKU BNDL-E0009) includes one 90A breaker to pair with the FlexBOSS21. Additionally, Smart Port Breakers are included in 30A, 40A, 60A, and 80A sizes. These are included in the box and depicted in the manual's packing list. Please note that the 125A breaker is sold separately, and to be used in the smart port or for the generator port.

EG4 FlexBOSS21 Hybrid Inverter Spec Sheet:

EG4 FlexBOSS21 Hybrid Inverter User Manual:

EG4 GridBOSS MID Spec Sheet:

EG4 GridBOSS MID User Manual:

We strongly recommend using a certified solar installer and/or master electrician for professional installation. Please note that additional components may be required for your installation.

Shipping
Renewable Outdoors is offering FREE SHIPPING for a limited time on most orders delivered within the contiguous United States.

    If your order is in stock and we process the charges to your credit card, our goal is to ship your order out within the timeframe specified on the product page. If we foresee potential delays beyond this shipping window, we will reach out to you directly to inform you. If for some reason you have not received your shipment within a reasonable timeframe or have not heard from us, feel free to reach out at mailto: sales@renewableoutdoors.com. Some Exclusions Apply For Free Shipping. 

     

    Why Buy From Us

    Renewable Outdoors was created to become the number one destination for renewable energy and eco-friendly products. Renewable Outdoors is a place where you get the coolest products out there while also saving the planet. We only offer the best products that make a true impact on the world in the best way. We always strive to provide the best information, the best products, the best prices, the best customer service, and the best overall buying experience anywhere. This is why Renewable Outdoors is the #1 store for renewable energy, camping gear, off grid supplies, and more! 

    • WE PUT OUR CUSTOMERS FIRST

    We're a small team and truly care about your experience with us. Unlike the other "internet" companies out there that want just a simple transaction, we are here to help you every step of the way. Aside from the information we provide on our website, we also have a customer service team readily available via email or phone to help answer any questions you have at any time. 

    • WE LOVE SAVING THE PLANET AND THE OUTDOORS AS MUCH AS YOU DO

    When you call us, you get an expert in the renewable and outdoor industry on the other line. A large part of our team is from the mountains of Colorado where renewable energy and outdoors are second nature. Whether you are looking for solar generators, EV chargers, or anything else, we truly invest ourselves in understanding our products.

    • WE ARE THE EXPERTS IN THE INDUSTRY

    By working closely with a large number of the best brands in the renewable energy and outdoors industry. We are given a unique insight that you cannot find anywhere else. Our owners have taken the time to carefully select only the best brands with track records for excellent products. To put it simply, you just will not find this level of expertise anywhere else. We want to get to know the products we sell on a deep level so that we can best serve you.

    More Reasons to Love Renewable Outdoors:

    • Price Match Guarantee

      • Thanks to our strategic partnerships with our brands, we are able to offer the best prices you can find anywhere or we refund the difference.
    • Free Shipping on Most Orders

      • Most orders shipped to the lower 48 U.S. states ship FREE. 
        • If you wish to ship to Alaska, Hawaii, or Canada give us a call or shoot us an email and we can help with that as well.
    • 100% Safe & Secure Ordering

      • Our website uses SSL Encryption technology ensuring all sensitive payment or personal information submitted through the website is completely secure and protected.
    • McAfee Shopping Guarantee

      • Includes $10,000 ID Theft Protection Coverage, $1,000 Purchase Guarantee, and $100 Lowest Price Guarantee most FREE of charge when you order with us.
    • Volume Discounts

      •  If you are looking to buy a large quantity of one item, we may be able to offer special pricing. Feel free to send an email to sales@renewableoutdoors.com for a quote.
    • We Are An Authorized Dealer

      • Renewable Outdoors is an authorized dealer for all of the brands on our website. This means we are able to offer full manufacturer warranties on every order.

    This is why Renewable Outdoors is the #1 Source for your ultimate renewable energy and outdoors experience!

    FAQs

    Which payment methods do you accept?

    • Credit/Debit Cards (American Express, MasterCard, Visa, and Discover)

    • PayPal

    • Google Pay

      What is your return policy?

      Please see our We Accept Returns page for more information.

      What is your cancellation policy?

      All orders canceled after 48 hours are subject to a $20 administration fee, whether or not your order has shipped.  If you order has shipped, you (the buyer) will also be responsible for actual return shipping charges as described on the Shipping & Easy Returns page. Refunds will only be issued to the original credit card that you use when placing your order.

      What if my product is damaged?

      Please inspect the packaging of your item(s) when they arrive, if you notice any damage you should make note of it when signing for delivery.  If your item(s) do arrive damaged, please send photos to sales@renewableoutdoors.com and we will process an insurance claim on your behalf.

      How do I place an order?

      First, locate the product you would like to purchase and choose the quantity in the selection box. Next, click on the “Add to Cart” button. All of your products will be added to your cart.

      You will find your cart at the "My Cart" button located at the upper right-hand side of the website. When you are prepared to complete your purchase, ensure your cart is correct and press "Checkout".

      Enter your shipping/billing and credit card information and follow the instructions on the checkout page. Once your order has been placed, you will receive a confirmation email from us with the details of your order.

      If you would like to place an order by phone, give us a call at 1-844-345-2677.

      How will my order be fulfilled?

      As soon as you place your order, you will receive an order confirmation e-mail.  This means that we have received your order in our system and pre-authorized your credit card for the purchase.  As soon as we receive your order, we automatically reach out to our suppliers to confirm that it is in stock and available for immediate shipment.  If your item is on backorder or unavailable, we will void the pre-authorization and reach out to you via e-mail.  If your item(s) are available for immediate shipment (within 5 business days), we will process the charges and submit the order for shipment.

      Will you send an order confirmation via e-mail?

      An order confirmation message will be sent to the e-mail address you provide us for each order you submit. We recommend that you print and save the e-mail confirmation for your records. Please be sure to enter your e-mail address correctly to ensure that you receive your order confirmation.

      How can I change My Account information?

      You can change your contact information at any time by signing into "My Account" and editing the information. Save the changes and your account will be updated.

      Do you charge sales tax?

      Only customers residing in the state of California, Colorado, Arizona, Pennsylvania, Texas, North Carolina, Tennessee, Washington and Florida will be charged sales tax. Orders from outside of California, Colorado, Arizona, Pennsylvania, Texas, North Carolina, Tennessee, Washington and Florida will not be charged sales tax.

      How can I make a change or cancel my order?

      Once an order has been placed, you cannot change or cancel your order online. To request a change or cancellation of an order, please contact us at (our email)

      How long will it take for my order to ship?

      This will vary by product and vendor so check the product pages for accurate estimates. You can be safe to assume that if your order is in stock and we process the charges to your credit card it will ship within 3 business days from the date of your order. If you have not received your shipment within this time or would like any information on the status of your shipment, contact us at sales@renewableoutdoors.com.

      Can you ship to a P.O. Box or an APO Address?

      At this time, we are unable to ship to P.O. Boxes, due to the size of our products, as well as APO addresses.  We apologize for the inconvenience.

      Didn't find what you were looking for?

      We would be glad to assist you. Visit us at our contact us page or fill in the form below.

      Upgrade Your Solar Setup with FlexBOSS21 & GridBOSS!

      Experience true whole-home backup with EG4-FlexBOSS21 Inverter and EG4-GridBOSS MID. These cutting-edge systems eliminate the need for costly main panel upgrades or critical load subpanels, saving you up to $7,500 in installation costs. Designed for maximum efficiency and minimal grid reliance, these energy solutions offer a superior return on investment. Take control of your energy needs with the industry's most versatile backup solutions.

       

      EG4 FlexBOSS21 Hybrid Inverter | 48V Split Phase | 21kW PV Input

      EG4 FlexBOSS21 Hybrid Inverter | 48V Split Phase | 21kW PV Input

      The EG4 FlexBOSS21 is a versatile 48V split-phase, hybrid inverter/charger that offers the same dependable power as the 18kPV with enhanced flexibility. Powerful enough to start a 5-ton AC unit, the FlexBOSS21 supports 21kW of PV input. Capable of paralleling up to 10 units together, the FlexBOSS21 has an impressive total output of 160kW. Three MPPTs give users optimal control over their solar needs, while the updated EG4 monitoring software allows for convenient total remote management, complete with mobile notifications and remote setting. Seamless interaction with GridBOSS gives users control over their entire Energy Storage System (ESS).

      Features:

      • Flexible Power Options: Operate off-grid, with grid support, or sell excess power back to the grid.
      • High PV Input Voltage: Supports up to 600V DC, allowing reduced cable sizes.
      • Smart Connectivity: Remote access with Wi-Fi and closed-loop communication with compatible batteries.
      • Safety-First Design: Includes rapid shutdown, ground fault monitoring, arc-fault protection, and robust safety certifications.

      EG4 GridBOSS Micro-Grid Interconnection Device (MID)

      The EG4 GridBOSS MID simplifies your Energy Storage System (ESS) by consolidating up to 10 components into a single, powerful unit. Designed to seamlessly connect utilities, generators, inverters, and loads, it offers centralized control, easy installation, and real-time remote monitoring.

      Features:

      • One-Point ESS Control: Connect and manage utility, inverters, generator, and loads from a single device.
      • Reduced Complexity: Replace breakers, transfer switches, and more with one compact solution.
      • Smart Load & Power Shedding: Automate power management to optimize battery performance.
      • 200A Service Entrance: Reliable with a 22 kAIC main breaker for powerful service integration.
      • Real-Time Monitoring: Access and adjust settings remotely via the EG4 app or monitoring system website.
      • Configurable Breakers: Supports one generator up to 125A, 3 hybrid inverters up to 90A each, and 4 smart ports ranging from 60A to 125A.

      Breaker Disclaimer:

      The EG4 GridBOSS is equipped with 70A breakers to be used with the EG4 18kPV. This kit (SKU BNDL-E0009) includes one 90A breaker to pair with the FlexBOSS21. Additionally, Smart Port Breakers are included in 30A, 40A, 60A, and 80A sizes. These are included in the box and depicted in the manual's packing list. Please note that the 125A breaker is sold separately, and to be used in the smart port or for the generator port.

      EG4 FlexBOSS21 Hybrid Inverter Spec Sheet:

      EG4 FlexBOSS21 Hybrid Inverter User Manual:

      EG4 GridBOSS MID Spec Sheet:

      EG4 GridBOSS MID User Manual:

      We strongly recommend using a certified solar installer and/or master electrician for professional installation. Please note that additional components may be required for your installation.

      Shipping
      Renewable Outdoors is offering FREE SHIPPING for a limited time on most orders delivered within the contiguous United States.

        If your order is in stock and we process the charges to your credit card, our goal is to ship your order out within the timeframe specified on the product page. If we foresee potential delays beyond this shipping window, we will reach out to you directly to inform you. If for some reason you have not received your shipment within a reasonable timeframe or have not heard from us, feel free to reach out at mailto: sales@renewableoutdoors.com. Some Exclusions Apply For Free Shipping. 

         

        Why Buy From Us

        Renewable Outdoors was created to become the number one destination for renewable energy and eco-friendly products. Renewable Outdoors is a place where you get the coolest products out there while also saving the planet. We only offer the best products that make a true impact on the world in the best way. We always strive to provide the best information, the best products, the best prices, the best customer service, and the best overall buying experience anywhere. This is why Renewable Outdoors is the #1 store for renewable energy, camping gear, off grid supplies, and more! 

        • WE PUT OUR CUSTOMERS FIRST

        We're a small team and truly care about your experience with us. Unlike the other "internet" companies out there that want just a simple transaction, we are here to help you every step of the way. Aside from the information we provide on our website, we also have a customer service team readily available via email or phone to help answer any questions you have at any time. 

        • WE LOVE SAVING THE PLANET AND THE OUTDOORS AS MUCH AS YOU DO

        When you call us, you get an expert in the renewable and outdoor industry on the other line. A large part of our team is from the mountains of Colorado where renewable energy and outdoors are second nature. Whether you are looking for solar generators, EV chargers, or anything else, we truly invest ourselves in understanding our products.

        • WE ARE THE EXPERTS IN THE INDUSTRY

        By working closely with a large number of the best brands in the renewable energy and outdoors industry. We are given a unique insight that you cannot find anywhere else. Our owners have taken the time to carefully select only the best brands with track records for excellent products. To put it simply, you just will not find this level of expertise anywhere else. We want to get to know the products we sell on a deep level so that we can best serve you.

        More Reasons to Love Renewable Outdoors:

        • Price Match Guarantee

          • Thanks to our strategic partnerships with our brands, we are able to offer the best prices you can find anywhere or we refund the difference.
        • Free Shipping on Most Orders

          • Most orders shipped to the lower 48 U.S. states ship FREE. 
            • If you wish to ship to Alaska, Hawaii, or Canada give us a call or shoot us an email and we can help with that as well.
        • 100% Safe & Secure Ordering

          • Our website uses SSL Encryption technology ensuring all sensitive payment or personal information submitted through the website is completely secure and protected.
        • McAfee Shopping Guarantee

          • Includes $10,000 ID Theft Protection Coverage, $1,000 Purchase Guarantee, and $100 Lowest Price Guarantee most FREE of charge when you order with us.
        • Volume Discounts

          •  If you are looking to buy a large quantity of one item, we may be able to offer special pricing. Feel free to send an email to sales@renewableoutdoors.com for a quote.
        • We Are An Authorized Dealer

          • Renewable Outdoors is an authorized dealer for all of the brands on our website. This means we are able to offer full manufacturer warranties on every order.

        This is why Renewable Outdoors is the #1 Source for your ultimate renewable energy and outdoors experience!

        FAQs

        Which payment methods do you accept?

        • Credit/Debit Cards (American Express, MasterCard, Visa, and Discover)

        • PayPal

        • Google Pay

          What is your return policy?

          Please see our We Accept Returns page for more information.

          What is your cancellation policy?

          All orders canceled after 48 hours are subject to a $20 administration fee, whether or not your order has shipped.  If you order has shipped, you (the buyer) will also be responsible for actual return shipping charges as described on the Shipping & Easy Returns page. Refunds will only be issued to the original credit card that you use when placing your order.

          What if my product is damaged?

          Please inspect the packaging of your item(s) when they arrive, if you notice any damage you should make note of it when signing for delivery.  If your item(s) do arrive damaged, please send photos to sales@renewableoutdoors.com and we will process an insurance claim on your behalf.

          How do I place an order?

          First, locate the product you would like to purchase and choose the quantity in the selection box. Next, click on the “Add to Cart” button. All of your products will be added to your cart.

          You will find your cart at the "My Cart" button located at the upper right-hand side of the website. When you are prepared to complete your purchase, ensure your cart is correct and press "Checkout".

          Enter your shipping/billing and credit card information and follow the instructions on the checkout page. Once your order has been placed, you will receive a confirmation email from us with the details of your order.

          If you would like to place an order by phone, give us a call at 1-844-345-2677.

          How will my order be fulfilled?

          As soon as you place your order, you will receive an order confirmation e-mail.  This means that we have received your order in our system and pre-authorized your credit card for the purchase.  As soon as we receive your order, we automatically reach out to our suppliers to confirm that it is in stock and available for immediate shipment.  If your item is on backorder or unavailable, we will void the pre-authorization and reach out to you via e-mail.  If your item(s) are available for immediate shipment (within 5 business days), we will process the charges and submit the order for shipment.

          Will you send an order confirmation via e-mail?

          An order confirmation message will be sent to the e-mail address you provide us for each order you submit. We recommend that you print and save the e-mail confirmation for your records. Please be sure to enter your e-mail address correctly to ensure that you receive your order confirmation.

          How can I change My Account information?

          You can change your contact information at any time by signing into "My Account" and editing the information. Save the changes and your account will be updated.

          Do you charge sales tax?

          Only customers residing in the state of California, Colorado, Arizona, Pennsylvania, Texas, North Carolina, Tennessee, Washington and Florida will be charged sales tax. Orders from outside of California, Colorado, Arizona, Pennsylvania, Texas, North Carolina, Tennessee, Washington and Florida will not be charged sales tax.

          How can I make a change or cancel my order?

          Once an order has been placed, you cannot change or cancel your order online. To request a change or cancellation of an order, please contact us at (our email)

          How long will it take for my order to ship?

          This will vary by product and vendor so check the product pages for accurate estimates. You can be safe to assume that if your order is in stock and we process the charges to your credit card it will ship within 3 business days from the date of your order. If you have not received your shipment within this time or would like any information on the status of your shipment, contact us at sales@renewableoutdoors.com.

          Can you ship to a P.O. Box or an APO Address?

          At this time, we are unable to ship to P.O. Boxes, due to the size of our products, as well as APO addresses.  We apologize for the inconvenience.

          Didn't find what you were looking for?

          We would be glad to assist you. Visit us at our contact us page or fill in the form below.

          EG4-FlexBOSS21 Inverter | 48V Split Phase | 21kW PV Input & EG4-GridBOSS MID | 200A Service Entrance with 90A Breaker [BNDL-E00019]

          $6,048.00

          Added to cart!
          FREE and FAST Shipping on Most USA Orders! FREE Shipping on all USA Orders. Offer ends in You Have Achieved Free Shipping Free Shipping For Over $x to FREE Shipping on Most USA Orders! XX