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US installed cost $3.75 per wattPower 17.45¢/kWh · July 2026
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Gear

The solar you can actually buy off a shelf

None of this is a rooftop system. Nobody sells one of those on Amazon, and most of what an installed array costs is labour and paperwork rather than hardware. What is on a shelf is the adjacent market, and some of it is genuinely worth owning.

First, the honest bit

Why there are no rooftop panels on this page

An 8 kW rooftop system costs around $30,000 installed. Buy the modules alone and you are looking at perhaps a sixth of that. The rest is the crew, the design, the permit, the inspection, the utility interconnection, the sales cost and the margin, and none of it comes in a box.

So putting an affiliate link to a pallet of panels next to a $30,000 figure would imply a connection that does not exist. If you want an array on your roof, get quotes and hold them against what people in your state actually paid. That is what this site is for.

What follows is the other thing: portable power, 12V and off-grid kit, and the instruments worth owning before you spend five figures on anything.

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Portable power

A power station is a battery, an inverter and a set of sockets in one box. It is what most people mean when they say solar generator, and it is the only kind of solar most households will ever plug in themselves. It will not run your house. It will keep a fridge, a router and some lights going through an outage, which for a lot of people is the whole point.

DABBSSON Portable Power Station 2000L, 2048Wh Semi-Solid LiFePO4 Battery, 2200W AC Output 6, 3300W Power Boost, 1 Hr Fast Charge, Solar Generator for Home Backup, Camping & RVs (Solar Panel Optional)
Large portable power station

Roughly 2 kWh of storage with AC output. The nearest thing to a home battery you can buy off a shelf, and the usual answer to keeping a fridge and a few circuits alive in an outage.

DABBSSON Portable Power Station 2000L, 2048Wh Semi-Solid LiFePO4 Battery, 2200W AC Output...

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ANTPO 500W Portable Power Station, 500Wh LiFePO4 Solar Generator Pure Sine Wave 110V AC Car Outlets PD 60W QC3.0 Backup Power Supply Bank for Camping, Blackout,
Small portable power station

Around 500 Wh. Enough for phones, laptops, lights and a CPAP overnight. The size most people actually end up using.

ANTPO 500W Portable Power Station, 500Wh LiFePO4 Solar Generator Pure Sine Wave 110V AC...

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DOKIO 200W Portable Foldable Solar Panel Kit for 12V Battery Charging
Folding solar panel

100 to 200 W, folds flat, pairs with a power station. This is what recharges the box above when the grid is down for more than a day.

DOKIO 200W Portable Foldable Solar Panel Kit for 12V Battery Charging

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Off-grid and RV

12V systems for vehicles, boats, sheds and cabins. This is the part of solar where doing it yourself genuinely makes sense: no utility interconnection, no permit office, no inspector. The components are cheap and the wiring is within reach of anyone comfortable with a multimeter.

Renogy 100 Watt Solar Panel N-Type, 16BB 25% High-Efficiency
12V rigid solar panel

The standard 100 W panel for RVs, boats, sheds and gate openers. Not what goes on a house, and priced per panel rather than per watt installed.

Renogy 100 Watt Solar Panel N-Type, 16BB 25% High-Efficiency

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Dyness MPPT Solar Charge Controller with Bluetooth APP Control 40A 12V/24V
MPPT charge controller

Sits between panel and battery and extracts noticeably more from the same panel than a cheaper PWM controller does. The one component worth not economising on in a small system.

Dyness MPPT Solar Charge Controller with Bluetooth APP Control 40A 12V/24V

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BELTTT 2000W Pure Sine Wave Inverter 12V DC to 120V AC, 4000W Surge
Pure sine wave inverter

Turns 12V DC into household AC. Pure sine rather than modified: anything with a motor or a sensitive power supply objects to the cheaper waveform.

BELTTT 2000W Pure Sine Wave Inverter 12V DC to 120V AC, 4000W Surge

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12V 100Ah LiFePO4 Battery, Group 24 Deep Cycle RV/Trolling Motor Battery
LiFePO4 deep cycle battery

100Ah at 12V, the standard off-grid building block. Lithium iron phosphate rather than lead acid: several times the cycle life and it tolerates being run down.

12V 100Ah LiFePO4 Battery, Group 24 Deep Cycle RV/Trolling Motor Battery

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Measuring it

Worth fitting before you buy anything. A whole-home monitor tells you what your house actually draws and when, which is how you size a system on evidence rather than on an installer's estimate of your habits.

Emporia Vue 3 Home Energy Monitor - Smart Home Automation Module and Real Time Electricity Usage Monitor, Power Consumption Meter, Solar and Net Metering for UL Certified Safe Energy Monitoring
Whole-home energy monitor

Clamps onto the mains in your panel and shows what the house actually draws, circuit by circuit. Worth fitting before you buy solar, not after: it tells you what size system you need instead of letting a salesperson guess.

Emporia Vue 3 Home Energy Monitor - Smart Home Automation Module and Real Time...

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Parts

The small things that a self-install eats through, and that are easy to under-order.

100PCS MC4 Soar Connectors Solar Panel Cable Connectors 1000V 30A IP67 Waterproof Male/Female Plug with Spanners, Suitable for 14AWG-10AWG Solar Cables (50 Pairs)
MC4 connectors

The weatherproof connector every solar panel terminates in. Bought in packs, and worth buying properly rated ones because they sit outdoors for twenty years.

100PCS MC4 Soar Connectors Solar Panel Cable Connectors 1000V 30A IP67 Waterproof...

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BougeRV 20 Feet 10AWG Solar Extension Cable with Female and Male Connector
Solar extension cable

10 AWG PV wire with MC4 ends. The run from array to controller is longer than people expect and undersized cable throws away the gain an MPPT controller just bought you.

BougeRV 20 Feet 10AWG Solar Extension Cable with Female and Male Connector

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Disclosure

How these links work

Each card links to the exact listing on Amazon, where the current price is shown. As an Amazon Associate we earn from qualifying purchases: if you buy through one of these links we earn a commission at no extra cost to you, and it does not change what is listed here or any figure elsewhere on this site.

Every card is one specific listing, matched by hand-written rules and re-checked monthly. Where no listing could be matched confidently, the item is left off rather than linked to a loosely related product or a search page. Landing you on the wrong item to save a click is why so many affiliate pages are useless. Full disclosure.