Home solar quotes, compared side by side

Most homeowners see gross system prices between $20,000 and $35,000 before incentives, depending on system size, roof complexity and equipment tier. What matters more than the average is the spread: two installers quoting identical equipment on the same roof can land thousands of dollars apart, which is exactly why comparing multiple bids is the only reliable way to find your real price.

Insist every installer quote the same specification — panel model, inverter type, system size and mounting. Otherwise you are comparing different products rather than different prices, and the lower number may simply represent less equipment. Also compare workmanship warranty length, whether crews are in-house or subcontracted, and how each handles your roof's condition.

It depends on your annual electricity consumption, not your square footage. A good installer sizes the array to your actual usage history, then models production against your roof's orientation and shade. A system sized to a rule of thumb rather than your real usage will either over- or under-produce.

There is no hard cutoff, but roof age matters. If your roof will need replacement within the next decade, replacing it before installing solar almost always costs less than removing and reinstalling the array later. Ask each installer to assess your roof's remaining life, not just its current condition.

Not necessarily. Without a battery, your system still offsets your usage and earns net metering credits, but it shuts down during a grid outage for safety. A battery adds backup power but increases cost substantially. Whether it is worth it depends on how much outage protection matters to you and how your utility credits excess production.

Often not, but it changes the design and the economics. Mature tree canopy reduces production, so a proper shade analysis matters — especially in older neighborhoods. A good installer models production with the shade rather than estimating around it, and may recommend a different roof plane as a result.

Net metering means excess power your system produces is credited against what you draw from the grid, which is what makes the economics work for most homes. Rules and credit rates differ by state and utility, and several have been adjusted in recent years. Confirm the current structure with your utility before signing.

Physical installation is usually one to three days. The longer portion is permitting and utility interconnection, which can take several weeks to a few months depending on your jurisdiction's review volume and whether an electrical upgrade is needed. Installers familiar with your local process tend to move through it faster.

Be cautious with anyone who pressures you to sign during the first visit, will not put complete pricing and equipment specifications in writing, or cannot clearly explain the warranty terms. A reputable installer will welcome a second bid and give you time to compare. You are never obligated to accept any quote.