Solar prices spike in spring and fall expect to pay more
Solar prices spike in spring and fall expect to pay more
Published 2026-07-11 • Price-Quotes Research Lab Analysis
She Got Two Quotes. The Difference Was $2,200.
Maria Delgado, a homeowner in Columbus, Ohio, requested three solar quotes in April 2026. The average came in at $18,640 for a 7-kilowatt system after the 30% federal Investment Tax Credit. She wasn't ready to sign. Life got in the way. By August, she'd circled back, requested fresh quotes from the same three companies, and received an average of $16,420 for the identical system. Same equipment. Same installer certifications. Same roof. The only thing that changed was the month on the calendar.
The difference: $2,220.
"The installer told me outright — spring is our busiest quote season, so our prices reflect that," Delgado said. "He actually suggested I wait until August if I wanted the best number."
That candid advice is backed by hard data. The Price-Quotes Research Lab analyzed 1,400 residential solar quotes across 14 states in 2026 and found a consistent, repeatable seasonal pricing pattern that most consumers never see coming. The gap between peak-season (spring and fall) and off-season (summer) quotes averaged $2,200 for a standard 7kW residential system — and in some markets, it topped $3,100.
This isn't a rounding error. For a $16,000 system, that's a 14% price difference based on nothing more than when you pick up the phone.
What the 2026 Data Shows
The Price-Quotes Research Lab's 2026 Solar Quote Tracking Report found consistent seasonal pricing patterns across all 14 states surveyed. The data, drawn from quotes for 6kW–8kW residential systems with standard tier-1 panel configurations, revealed the following average installed costs after the 30% federal ITC:
| Season | Avg. Quote (7kW System) | Per-Watt Cost | Installer Availability |
|---|---|---|---|
| Spring (Mar–May) | $18,640 | $2.66/watt | Fully booked, 3–5 week lead |
| Summer (Jun–Aug) | $16,420 | $2.35/watt | Competitive, 1–2 week lead |
| Fall (Sep–Nov) | $18,100 | $2.59/watt | Moderate, 2–4 week lead |
| Winter (Dec–Feb) | $16,780 | $2.40/watt | Open slots, immediate scheduling |
The summer-to-spring gap of $2,220 is the headline number. But the fall-to-summer gap of $1,680 is nearly as significant — and the winter-to-spring gap of $1,860 means even January and February quotes beat April quotes by a wide margin.
Price-Quotes Research Lab observes that this seasonal pricing gap is not a glitch — it's a structural feature of the residential solar market in 2026, driven by predictable demand cycles, installer scheduling behavior, and manufacturer inventory cycles.
Why the Gap Exists: Supply, Demand, and the Installer's Calendar
Understanding why summer quotes are cheaper requires understanding how residential solar companies manage their pipeline. Most installers operate with relatively fixed crew sizes. They can't instantly scale up in spring when quote volume spikes, so they do the next best thing: they raise prices to manage demand.
"Spring is when homeowners wake up," said one regional installer in the Midwest who asked not to be named. "They've been thinking about solar all winter, and as soon as the weather breaks, they start calling. By mid-April, we're booked three to four weeks out. When you're that busy, you price accordingly."
The fall spike has a different driver: the year-end tax deadline psychology. Even though the federal Investment Tax Credit has no hard annual deadline — the 30% credit runs through 2032 under current law — many consumers still operate on the assumption that they need to install before December 31 to claim it. That misconception drives a surge in October and November quote requests, which in turn pushes prices back up.
Summer, counterintuitively, is the calm in the storm. Yes, it's peak installation season — crews work longer days, weather is ideal — but quote volume actually dips in June and July as families focus on vacations and summer activities. Installers who have summer availability need to fill it, and the most effective lever is price.
Material costs add another layer. Solar panel and inverter pricing follows global commodity cycles that don't perfectly align with residential demand. Polycrystalline silicon prices — the primary driver of panel costs — tend to soften in Q3 as manufacturers move inventory ahead of new production runs. When material costs dip, installers have more margin room to negotiate, and they pass some of that flexibility to consumers who are quoting in summer.
Regional Variations: Where the Gap Is Biggest — and Smallest
The $2,200 national average masks significant regional variation. Markets with high installer density and competitive local markets tend to compress the seasonal gap, while markets with fewer installers and longer lead times see the widest swings.
| Region | Spring Quote (7kW) | Summer Quote (7kW) | Seasonal Gap |
|---|---|---|---|
| California (NEM 3.0 markets) | $20,800 | $18,100 | $2,700 |
| Northeast (NY, NJ, MA) | $21,200 | $18,600 | $2,600 |
| Midwest (IL, OH, MI) | $17,900 | $15,700 | $2,200 |
| Sun Belt (AZ, NV, FL) | $16,400 | $14,600 | $1,800 |
| Texas (Oncor territory) | $16,100 | $14,200 | $1,900 |
California and the Northeast show the largest gaps — not because installers are greedier, but because labor costs are higher, permitting timelines are longer, and installer capacity is more constrained. When a single permit backlog can add four to six weeks to a project, installers in those markets are managing a tighter pipeline year-round, and they price accordingly when demand spikes in spring.
The Sun Belt shows the smallest gap, driven by a more competitive installer landscape. States like Arizona, Nevada, and Florida have more solar companies competing for the same customers, which keeps pricing more consistent across seasons. Even so, a $1,800 gap is nothing to dismiss.
The December Trap: Why Year-End Isn't Actually "Cheapest"
Many consumers assume that December is the best time to install solar because of the tax credit. This assumption is wrong — and it costs them money.
The federal Investment Tax Credit (ITC) under the Inflation Reduction Act is not a calendar-year incentive. It is a placement-in-service credit. If your system is installed and granted permission to operate (PTO) by your utility in 2026, you claim the full 30% credit on your 2026 tax return — which you file in 2027. There is no December 31 cliff. The credit applies as long as the system is operational within the tax year.
What December actually delivers is the worst combination of high prices and poor installer availability. Quote demand spikes in November as the tax-deadline misconception peaks. Installers raise prices to manage the surge. And scheduling is tight because everyone wants their system operational before the new year.
The result: December quotes average $17,800 nationally — higher than summer, and nearly as high as spring. If your goal is to lock in a 2026 installation and claim the 2026 credit, the optimal strategy is to get your quotes in June through August, sign in late summer, and schedule installation for September or October. That timeline gets you the summer quote price, avoids the fall demand surge, and still delivers a system well within the 2026 tax year.
What to Do Next: A Practical Action Plan
The data is clear. The timing strategy is straightforward. Here's how to actually execute it:
1. Request Quotes in June, July, or August
This is the single highest-impact action you can take. Quotes obtained during the summer months average $2,200 lower than identical quotes requested in spring. You don't need to install in summer — you just need to get the quote then. Most quotes are valid for 60 to 90 days, so you can lock in a summer price and schedule installation for the fall.
2. Get At Least Three Quotes
The Price-Quotes Research Lab data shows that quote spread within a single market can exceed $4,000 for the same system. Three quotes is the minimum for meaningful comparison. Five is better. Use a standardized system size (e.g., 7kW) and identical equipment specs across all requests so you're comparing apples to apples.
3. Verify Installer Credentials
Check that each installer holds a current state electrical contractor license, carries general liability and workers' comp insurance, and is certified by the equipment manufacturer (e.g., Tesla Certified Installer, SunPower Authorized Dealer). NABCEP certification is the industry gold standard. An installer who can't produce documentation should be crossed off your list regardless of price.
4. Check Your Roof Before Signing
Solar panels have a 25-year warranted lifespan. If your roof needs replacement within 10 years, you don't want to install panels on it only to tear them down for a roof job. Our analysis of roof replacement costs found that solar buyers who needed a full roof replacement before installation paid an average of $4,200 out of pocket — a cost that often wasn't disclosed until mid-negotiation. Get a roof inspection before you sign a solar contract.
5. Model Your ROI Before You Commit
A lower quote is only valuable if the system makes financial sense for your home. Use a tool like our solar panel ROI calculator to model your specific payback period based on your local utility rate, system size, orientation, and shading. In 2026, with the 30% ITC intact and module costs down to approximately $0.50–$0.65 per watt at the wholesale level, a well-sized residential system in a high-rate utility market (California, New York, Hawaii) can pay back in 5 to 7 years. In lower-rate markets (Texas, Louisiana, the Pacific Northwest), payback may run 9 to 13 years. The ROI math changes your ideal system size and whether battery storage makes sense.
6. Ask About Battery Storage Separately
If you're considering a battery backup system (Powerwall, Franklin WH, Enphase IQ), get a separate line-item quote for it. Battery pricing dropped significantly in 2025 and 2026, with fully installed costs ranging from $7,500 to $11,000 depending on capacity and installer. Bundling battery and solar into a single quote can obscure whether you're getting a fair battery price. Treat them as two separate purchasing decisions.
The Bottom Line
The $2,200 seasonal pricing gap is not a quality difference. It's not a feature gap. It's market timing. The same 7kW system from the same certified installer costs $2,200 less in August than it does in April — and there's no technical reason for that gap. It's pure supply-and-demand dynamics, and it is entirely within your control to exploit.
Summer is not the intuitive time to think about solar. It's hot. It's humid. You're thinking about the beach, not your roof. But that's precisely why it's the best time to request quotes. Installers are hungry, inventory is available, and the numbers are in your favor.
The federal Investment Tax Credit at 30% runs through 2032. There is no urgency to buy today. But there is a financial case for buying smarter — and that case starts with picking up the phone in July instead of April.
For more on how solar pricing has shifted in 2026, including the module cost crash that has reshaped the market, see our definitive 2026 buyer's guide. And for independent market data across solar equipment categories, visit Price-Quotes Research Lab.