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New in stock · Free US shipping

Power, lawn and storage. Shipped free.

Generators from Honda, Generac and Champion, robot and cordless mowers from Mammotion, Navimow and Milwaukee, power stations and Keter storage sheds. Already in our US warehouse, processed within 24 hours, at your door in 2-5 business days.

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Processing
0-24 hours
Delivery
2-5 days
Returns
30 days, free
Shipping
Always free
Generac home standby generator, Honda EU2200i inverter generator, EcoFlow DELTA 3 power station and Mammotion robot mower New in stock Generac Guardian 24kW Home standby · transfer switch · $4,569.00

Generator finder

What do you need to power?

Tick what you want running at the same time. We add up the running watts, allow for the biggest motor starting, add 10% headroom and show the generators that can carry it.

Appliances
Running0 W
Starting0 W

Pick a few appliances, or start with a quick pick above.

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Power, lawn and storage for every home.

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Westinghouse and Honda inverter generators730 productsGenerators & powerHonda, Generac, Champion, Westinghouse, EcoFlow, EGO and more ECHO gas mower with Navimow and Mammotion robot mowers31 mowersLawn mowersRobot, cordless and gas Family with bikes next to a Keter Stronghold shed23 shedsStorage shedsSale is liveBlack Friday dealsEvery price already reduced, free shipping

Black Friday 2026

Generator deals, already reduced.

Shop all Black Friday deals

Generators and power

Find your power.

Which size do I need?
  1. Generac Guardian home standby generatorHome standbyWhole-home backup that starts on its own.281 models, from $1,539.00
  2. Westinghouse and Champion dual fuel portable generatorsPortable and dual fuelBig watts for outages and job sites.181 models, from $219.00
  3. Honda EU2200i and EU1000i inverter generatorsQuiet inverterClean power for RVs, camping and electronics.159 models, from $349.00
  4. EGO Nexus and EcoFlow DELTA 3 power stationsPower stationsBattery backup with no fuel and no fumes.6 models, from $299.00
Generac home standby, Westinghouse portable and Honda inverter generators
Generac, Westinghouse, Honda

Generator size guide

Size it to what you’ll run.

Add up the running watts of everything you want on at the same time, then leave room for the surge when motors start. Every generator page has a planner that does the math for you.

Essentials2.5 kW
Phones, lights, a fridge and a CPAP, quietly. Inverter generators like the Honda EU2200i, or a power station.
Outage backup3.5–7.5 kW
Fridge, sump pump, furnace fan, lights and TV. Dual fuel portables from Champion, Generac and Westinghouse.
Most of the house8–14.5 kW
Add a well pump, window AC or washer through a transfer switch. Tri fuel and large dual fuel portables.
Whole home24–26 kW
Central AC, water heater and the rest, switching on by itself. Generac Guardian home standby.

Lawn and yard

Mow smarter, clean up faster.

All lawn mowers
  1. Mammotion LUBA robot lawn mowersRobot mowersWire-free mowing on a schedule.14 models, from $469.00
  2. Milwaukee M18 FUEL cordless mower kitCordless mowersBattery power, no gas, no pull cord.11 models, from $349.00
  3. ECHO 30 inch self-propelled gas mowerGas mowersWide decks for big lawns.3 models, from $389.00
  4. Billy Goat leaf vacuum and DR power dump cartFall cleanup and yardLeaf vacuums, brush mower and more.9 models, from $299.00

Keter collections

Find your shed line.

Take the 3-question shed finder
  1. Keter Stronghold shed01StrongholdHeavy-duty, ride-on mower ready.5 models, from $519.00
  2. Keter Cortina shed02CortinaModern pent roof, room to work.2 models, from $689.00
  3. Keter Signature shed03SignatureWood-look panels, no maintenance.2 models, from $939.00
  4. Keter Darwin shed04DarwinClassic apex roof, great value.4 models, from $349.00
  5. Keter Store It Out shed05Store It OutBins, tools and bikes, tidied.2 models, from $179.00

Storage sheds

Sheds, reduced for Black Friday.

Shop all sheds
Bikes and tools stored inside a Keter Cortina shed
Keter Cortina 11×7 ft

Shed size guide

Buy the size you’ll grow into.

Most people wish they’d gone one size up. Measure the spot, leave a little room around it and use this as a starting point. Exact dimensions are on every product page.

CompactUp to 4×6
Trash bins, garden tools, a bike or two. Store It Out and small Darwin sheds.
Mid-size6×6 to 8×8
A push mower, bikes, shelving and seasonal gear. Darwin, Manor and Stronghold 8×8.
Large10×8 and up
A ride-on mower, a workbench, or a full workshop. Stronghold and Cortina.

Why GroundWatt

Real stock. Real people. No surprises.

Everything we sell, from generators and mowers to sheds, is already in our US warehouse, so nothing waits on an overseas supplier. We’re a small online retailer based in Wilmington, NC and the same terms apply to every order.

  1. Free shipping, alwaysPrices include delivery to the contiguous US. Processed within 24 hours, arrives in 2-5 business days.
  2. 30-day free returnsUnused and in the original packaging. We cover return freight, with no restocking fee.
  3. Warranty helpWarranty terms are set by each manufacturer and listed on each product page. If anything comes up, contact us first and we help you with the next steps.
  4. Talk to us first[email protected]
Person walking out of a Keter Stronghold shed
Based inWilmington, North Carolina

Good to know

Common questions.

All FAQs
Are these products new?
Yes. Every product we sell is brand-new, from Honda, Generac and Mammotion to Keter. No used, off-brand or private-label substitutes.
Is shipping really free?
Yes. Every price includes shipping to the contiguous United States, with no separate freight charges at checkout.
How fast will my order ship?
Orders are processed within 0-24 hours and typically arrive within 2-5 business days. You get tracking by email.
How is my order delivered?
Sheds and generators over 150 lb ship free by LTL freight to your curb or driveway. Mowers, power stations and portable generators ship free by UPS or FedEx Ground to your door. Every option arrives in 2-5 business days.
Which generator do I need?
Add up the running watts of what you want to power and allow for the starting surge of anything with a motor. Every product page lists starting and running watts and we are happy to help you choose.
What if I need to return it?
You have 30 days from delivery to return an unused item in its original packaging for a full refund. We cover return shipping.