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RoseWater Energy HUB20 single-cabinet power system

Authorized RoseWater Energy Dealer RoseWater Energy HUB20

Power conditioning, surge protection and 28.8 kWh of battery backup for a 100 A service, all in one cabinet.

RoseWater HUB20

What is the RoseWater HUB20?

The RoseWater HUB20 is a single-cabinet power system that conditions and backs up up to 20 kW on a 100 A service with zero transfer time. Every circuit it serves runs through the HUB all day, so a grid failure, a sag or a nearby lightning strike never reaches the equipment behind it.

It was RoseWater’s first product, and it is the system RoseWater usually recommends when a homeowner wants to protect the lifestyle-critical systems, the ones you would miss first, such as lighting control, the network, security and AV.

RoseWater Energy HUB20 single-cabinet power system

Best for

  • Homes on a 100 A service, or a 100 A subpanel of critical loads
  • Technology-rich homes that cannot tolerate a flicker
  • Owners adding solar or a generator later

What you get

  • 28.8 kWh of battery storage, expandable to 86.4 kWh with extended battery packs
  • Eight hot-swappable inverter modules, serviceable from the front without taking the system offline
  • Surge and lightning protection rated for up to 40 strikes of 140,000 V
  • Up to 10 kW of solar through the SBX10, plus generator input
  • Built-in remote monitoring with alerts that can go to you and to us

Specifications

RoseWater HUB20 specifications

The HUB20 conditions and backs up up to 20 kW on a 100 A service. Every circuit it serves is always on the HUB, so a grid failure causes no gap at all, and surges and sags are cleaned up before they reach your equipment.

Power specifications for the RoseWater HUB20
Continuous power conditioning20 kW / 100 A
Transfer timeZero (always online)
Service voltage240/120 V, or two legs of 208 V 3-phase
Output distortion (THD)Under 3%
Inverter modules8, hot-swappable
Storage specifications for the RoseWater HUB20
Standard battery28.8 kWh
Maximum battery86.4 kWh with extended battery packs
Battery chemistryAdvanced lead-acid (carbon)
Protection and sources specifications for the RoseWater HUB20
Surge ratingUp to 40 strikes of 140,000 V
Solar inputUp to 10 kW with the SBX10
GeneratorWorks with one or more generators
Remote monitoringBuilt in
Install specifications for the RoseWater HUB20
EnclosureSingle cabinet
Dimensions84" H x 28.1" W x 26.25" D
Space to plan3.5 ft W x 3 ft D x 8 ft H, plus 36" clear in front
LocationIndoors, garage or basement, no air conditioning needed
Warranty3 years from commissioning

Specifications as published by RoseWater Energy on rosewaterenergy.com. Run time depends on what the system carries, so we calculate it in your Power Plan rather than quote a number here.

Sizing

Is the HUB20 the right size for my home?

The HUB20 is the right size when the circuits you want protected fit within a 100 A service, either a smaller home’s whole service or a dedicated subpanel of essential loads in a larger one. RoseWater’s Power Plan worksheet usually points to a HUB20 for its Essential tier, which covers the microprocessor-heavy systems whose failure would be a real disruption.

Run time is the other half of sizing. It depends on what the HUB carries during an outage, which is why we calculate it in your plan and add extended battery packs when the numbers call for more storage.

  1. 01

    Pick what matters

    Choose the systems you want kept on, from the network and lighting control to refrigeration and a wine room.

  2. 02

    Check the service

    We review your panel schedules to see whether those circuits fit 100 A, or whether a HUB40 makes more sense.

  3. 03

    Set the run time

    We size storage from the standard 28.8 kWh up to 86.4 kWh based on how long you want to ride through an outage.

The Power Plan walks through the same load categories RoseWater uses, so we start your design with real information.

Build Your Power PlanBook a consultation

Who does what

Who installs it?

A licensed electrician makes the connection at your panel, RoseWater’s technician commissions the system, and Boston Automations designs, coordinates, programs and supports it. We manage the schedule between everyone so you deal with one team.

  1. 01

    Boston Automations

    Builds your Power Plan, designs and specifies the system, registers the project with RoseWater's engineering team, coordinates the electrician, programs and integrates the HUB with your home's systems, and supports it for the life of the system.

  2. 02

    Your licensed electrician

    Makes the electrical tie-in at your panel. If you have an electrician you trust, we work with them. If you do not, we bring in one we know.

  3. 03

    RoseWater Energy

    Builds the HUB, delivers it to the install location, and sends an on-site technician to commission it. Commissioning by RoseWater-trained personnel is what starts the three-year warranty.

The rest of the lineup

Other RoseWater systems

If your service size or loads point somewhere else, one of these may fit better. See the full RoseWater lineup or compare a HUB with other backup options.

RoseWater Energy HUB40 dual-cabinet power system

RoseWater HUB40

40 kW / 200 A

Dual-cabinet power for large, technology-heavy homes.

Specs and sizing for the HUB40
RoseWater Energy three-phase power system

RoseWater 3-Phase Systems

208 V / 3-phase

208 V three-phase power for the largest homes and buildings.

Specs and sizing for the 3-Phase Systems

FAQ

RoseWater HUB20 questions

How big is the RoseWater HUB20?

How big is the RoseWater HUB20?

The HUB20 cabinet is 84 inches high, 28.1 inches wide and 26.25 inches deep. Plan on a space about 3.5 feet wide, 3 feet deep and 8 feet high, with 36 inches clear in front for service, usually in a garage or basement.

How much battery storage does the HUB20 have?

How much battery storage does the HUB20 have?

The HUB20 includes 28.8 kWh of battery storage as standard and can be expanded to 86.4 kWh with RoseWater's extended battery packs.

Can a HUB20 back up my whole house?

Can a HUB20 back up my whole house?

A HUB20 can back up a whole house if the house runs on a 100 A service or if everything you want protected fits within 20 kW. Larger homes usually put essential circuits on a HUB20, step up to a HUB40, or combine HUBs.

Does the HUB20 need solar panels?

Does the HUB20 need solar panels?

No. The HUB20 works without solar, charging its batteries from the grid or a generator. If you add solar, the SBX10 lets it take up to 10 kW.

Can I start with a HUB20 and add storage later?

Can I start with a HUB20 and add storage later?

Yes. RoseWater's extended battery packs add storage to a HUB20, up to 86.4 kWh in total. We plan the space for them during the design so adding them later is simple.

Where to go next

Build Your Power Plan

Choose what should stay on and get a first sizing for your home.

How a HUB works

Diagrams that show how the HUB handles surges, sags, noise and an outage.

How Much Battery Backup You Need

How to list the loads that matter, think in kilowatt-hours and decide what belongs on battery.

Battery Backup Without Solar Panels

How a battery recharges without panels, why solar alone goes dark in an outage, and adding solar later.

What Is a Whole House UPS?

Transfer time, online double conversion, and how a whole-home UPS differs from a home battery.

Backup power FAQ

Straight answers on batteries, generators, solar and installation.

Talk to us

Call (781) 333-8003 or send a note and we will set up a consultation.

See If a HUB20 Covers Your Home

Pick the systems you want kept on and we will tell you whether a HUB20 handles them, and for how long.

Build Your Power Planor call (781) 333-8003Book a consultation