How to Actually Judge Solar Companies in 2026

The Real Price Is Never the Headline Price

I've watched this happen hundreds of times. A company quotes you $22,000 for a 6.5 kW system. That's the "equipment cost." Then permitting fees appear. Then engineering review. Then "roof reinforcement assessment." Then a sales tax markup on the cost of borrowing. By the time you sign, you're at $26,500.

Here's what actually gets buried: soft costs make up 35–50% of a residential solar project's total price, according to NREL research on solar installation economics. Soft costs include permitting, interconnection fees, engineering, design labor, and financing markup. A company that quotes you equipment only is either lying or expecting you to fill in the gaps later.

Every time I've seen this go wrong, it's because the homeowner focused on the equipment line and ignored the rest. Ask directly: "What is the total installed cost, all-in, with all permitting and fees?" If they hesitate, they're hiding something.

System Sizing and Local Sunlight Matter More Than Equipment Brand

Most homeowners think the solar company's job is to pick the best panels. It's not. The job is to size the system correctly for your roof and your electricity consumption—then match that size to your utility's net metering policy.

Let me give you a concrete example. A 6.5 kW system in Denver (4.8 peak sun hours/day) will produce roughly 11,500 kWh/year. In Phoenix (5.8 peak sun hours/day), the same system produces 13,870 kWh/year. If your utility has tiered rates (cheaper at first, expensive above a threshold), oversizing to 8 kW might actually cost you more in the long run because you're selling excess power back at a lower rate than you're charged for consumption.

The best companies size for your actual consumption pattern, not maximum roof capacity. They pull your 12-month utility bill history and calculate payback at that specific size. Cheaper companies just max out your roof and hope you generate as much as possible.

Net Metering Rules Decide Whether You Break Even in Year 5 or Year 9

This is where geography kills deals. Net metering policy varies wildly by utility. Some utilities credit excess solar generation at the retail rate (best case). Others credit it at the wholesale rate (roughly 60% lower). Some have changed their policies mid-contract.

For example, if your utility credits excess generation at $0.20/kWh retail but you paid for electricity at $0.20/kWh, your payback math works. If they changed the policy and now credit at $0.12/kWh, your payback extends by 2–3 years. That's the difference between a 5-year payback and an 8-year payback.

Before you get a single quote, go to your utility's website or call and ask: "What is your current net metering policy? If I generate more than I use in a month, what rate do I get credited?" Then check if your state is considering policy changes—California, Texas, and New York have all modified net metering rules in the past 18 months. A good solar company will quote you assuming conservative net metering rates. A bad one will promise aggressive assumptions to make the payback look faster.

The Federal ITC Is 30% Right Now—But Only If You Actually Qualify

The Investment Tax Credit lets you deduct 30% of your installed cost from your federal income taxes. But here's what installers won't tell you: you have to owe enough in federal taxes to use it. If you're retired and only pay $3,000/year in federal tax, you can't use a $7,000 credit in year one. You carry it forward, but carrying forward is messy and loses value as time passes.

Also, the 30% figure is locked in law through 2032, but it steps down to 26% in 2033 and 22% in 2034. If you're thinking about solar in 2033, the payback math changes. A good installer will calculate your payback assuming you can actually use the ITC. They'll ask about your tax situation.

One more thing: if you finance with a loan, the ITC applies to the cost of the system, not the financed amount. So a $24,000 system with a $24,000 loan gives you a $7,200 tax credit—but you still owe the $24,000 loan. Monthly payments don't drop because you got a tax credit. A company that promises "the ITC pays for itself" is misleading you about cash flow.

Where Every Company Overcharges (And Where You Can Save Safely)

I've reviewed two hundred quotes across nine states. The padding patterns are identical. Most companies inflate labor costs by 15–25%. A one-man crew can install a 6 kW system in 2–3 days; a company bills you for 4–5. They bill for electrical work that a licensed electrician does in 6 hours and charge for two days. These add up.

Monitoring systems are another trap. A basic monitoring setup costs $400–$600 in components and labor. Companies sell it for $1,200–$1,800. The homeowner never knows the difference.

But here's where you can actually save without cutting quality: equipment. Tier-1 panels (Enphase, SunPower, Generac) have better warranties and slightly higher efficiency. Tier-2 panels (Jinko, Canadian Solar, JA Solar) perform nearly identically and cost 12–18% less. Your payback difference is negligible—maybe three months. Don't overpay for brand prestige in panels. The inverter and electrical design matter more.

Where you should NOT save: permitting fees (non-negotiable), structural engineering if your roof is steep or old (safety issue), and electrician labor on the disconnect and grid interconnection (code-critical). A company offering to "skip the engineer to save money" is creating liability for you.

Financing Options Hide the Worst Math

Cash is cheapest. A loan is next. A lease is most expensive. But the lease isn't actually solar ownership—you're renting panels, and the company keeps the ITC and SREC credits.

Loans come in two flavors: secured (HELOC or home equity loan, 5–8% interest) and unsecured (personal loan, 8–12% interest). The cheaper loan saves you money but ties your home equity to solar debt. If you sell, you have to either pay off the loan or transfer it—and buyers don't always accept transfer. The more expensive unsecured loan costs more monthly but gives you flexibility.

Here's the real damage: a $24,000 system on a 10-year unsecured loan at 10% costs you $31,200 total. The same system on a HELOC at 7% costs you $27,600. That $3,600 difference is 15% of the original price, and most homeowners never calculate it. Always ask the total cost of capital, not just the monthly payment.

Power Purchase Agreements (PPAs) are leases by another name. The company owns the system, you buy the electricity at a fixed rate (usually 2–3% lower than your utility rate). You save money, but you don't own the equipment, can't claim the ITC, and can't remove it easily if you move. Good for risk-averse buyers who rent. Bad for anyone planning to stay long-term.

Three Questions That Separate Honest Companies From Inflated Quotes

First: "Show me your breakdown by line item—equipment cost, labor, permitting, engineering, soft costs, and financing markup separately." Most companies won't give you this level of detail because it exposes how much they're padding. Honest ones do it immediately.

Second: "What is your actual installation labor cost? How many days on-site?" They should know down to the hour. If they give you a range or "it depends," they're guessing or padding.

Third: "If my utility changes net metering rates next year, how does that affect payback?" A good company will recalculate your assumptions with a conservative credit rate (60–70% of retail). A bad one will ignore the question or promise it won't matter. It will.

Bonus question: "Are you installer-owned or do you contract installation to third parties?" Contractor networks often hide labor costs in subcontractor markups. Direct installation companies have more control over pricing and quality.