Plug-In Solar vs. Rooftop Solar

In short: Rooftop solar and plug-in solar solve different problems. Rooftop is the powerful, whole-home option for people who own a suitable roof and can invest in a larger system. Plug-in solar is the small, affordable, renter-friendly option for the large share of households that cannot access rooftop, or for anyone who wants a low-commitment way to start. Neither replaces the other, and the right choice depends on your home and your goals.

If you are comparing plug-in solar and rooftop solar, it helps to know up front that they are not really competitors. They are different tools for different situations. Rooftop is built to power most of a home; plug-in is built to be affordable and accessible to almost anyone. This guide lays out what each does best and how to choose. For the basics on how plug-in systems work, see our complete guide to plug-in solar.

What rooftop solar does best

Rooftop solar is a great option for homeowners with a suitable, sunny roof. A full rooftop system is large enough to offset most or all of a home’s electricity, it can raise the value of the property, and over its long life it can be a strong financial investment. If you own your home, plan to stay a while, and have the roof for it, rooftop solar does the heavy lifting that a small system cannot.

That capability comes with a bigger commitment. A rooftop system runs into the tens of thousands of dollars, it is professionally installed and permanently mounted, and it goes through a formal utility interconnection process. For the right home, that investment pays off. It simply is not an option for everyone, which is where plug-in solar comes in.

What plug-in solar does best

Plug-in solar is the accessible entry point. It is small, it costs a few hundred dollars rather than tens of thousands, and you set it up yourself with no roof work and no electrician. Most importantly, it works for the large share of households that cannot access rooftop solar at all: renters, apartment and condo residents, and anyone without a suitable roof. Because it plugs in, you can even take it with you when you move.

A plug-in system is designed to produce as much energy as your home consumes, so it offsets a portion of your everyday usage rather than your whole bill. It will not do what a full rooftop system does, and it is not meant to. It is the easiest, lowest-risk way to start generating your own power.

Plug-in solar vs. rooftop solar at a glance

The short version of how they compare:

• Cost: Plug-in solar is a few hundred dollars; rooftop runs into the tens of thousands.

• Who it is for: Plug-in works for renters and anyone without a suitable roof; rooftop is for homeowners with the roof and budget for it.

• Installation: You set up plug-in solar yourself in an afternoon; rooftop is professionally installed and permanently mounted.

• What it powers: Plug-in offsets a portion of your usage; rooftop can offset most or all of a home.

• Portability: Plug-in solar moves with you; rooftop stays with the house.

• Time to savings: Plug-in starts saving the day you plug it in; rooftop involves a longer design, permitting, and interconnection process first.

Which should you choose?

Choose rooftop solar if:

• You own your home and expect to stay for years.

• You have a suitable, sunny roof.

• You can invest in a larger system and want to offset most of your electricity.

Choose plug-in solar if:

• You rent, live in an apartment or condo, or cannot access rooftop solar.

• You want a low-cost, low-commitment way to start your solar journey.

• You have a sunny balcony, patio, wall, fence, or patch of yard.

• You want to start saving right away, without financing or a long-term contract.

Plenty of people start with plug-in solar and move to rooftop later when they buy a home with the right roof. If you are still deciding whether plug-in solar makes sense for you, see whether it is worth it for your situation, or compare the numbers with our savings calculator.

More than a way to save money

For many people, there is one more reason to choose plug-in solar, whatever their roof situation. Climate change can feel enormous and mostly out of your hands, and a plug-in system is a small, concrete way to take some of that power back: clean electricity you generate yourself, from something you own. Because Bright Saver is a nonprofit that sells at cost, your kit and your $29 membership never pad anyone’s profit. They help fund the work of making plug-in solar easier and more affordable in more places, so the next person has an easier start. It is a way to save money and take real action on climate change at the same time.

Frequently asked questions

Is plug-in solar better than rooftop solar?

Neither is universally better. Rooftop solar is the more powerful whole-home option for homeowners with a suitable roof, while plug-in solar is the affordable, accessible option for renters and anyone who cannot access rooftop. They solve different problems.

Is plug-in solar cheaper than rooftop solar?

Yes, by a wide margin. A plug-in kit is a few hundred dollars with no installation or financing, while a rooftop system runs into the tens of thousands. You can see current plug-in pricing in our guide to how much plug-in solar costs.

Can renters use plug-in solar instead of rooftop?

Yes, and this is one of its biggest advantages. Renters cannot install rooftop solar, but they can set up a plug-in system without owning the roof or making permanent changes. See our guide to solar for renters and apartments.

Does plug-in solar produce as much power as rooftop?

No. A plug-in system is small by design and offsets a portion of your everyday usage, while a rooftop system can offset most or all of a home. The difference in scale is intentional.

Should I get plug-in solar now and rooftop later?

That is a common and sensible path. Plug-in solar is a low-risk way to start saving now, and if you later own a home with a suitable roof, rooftop solar can take over the heavy lifting.

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Bright Saver is the first and only nonprofit in the United States dedicated to plug-in solar, also known as balcony solar, built on a simple premise: no American should have to choose between saving money and fighting climate change. We sell our members these small plug-in systems at cost, the kind anyone can set up on a balcony, patio, or other small space, and we have already helped pass laws in 10 states that make it cheaper for people to power their own homes.

Ready to start? Join for $29 a year and get your kit at cost.