Top 5 Red Flags to Watch for When Comparing Solar Installers
Going solar is a smart decision—financially, practically, and philosophically. A well-designed system should reliably work for 25+ years, lowering your energy bills and giving you peace of mind.
Unfortunately, not all solar installers are playing the same game. Some are built for long-term service and accountability. Others are built to move fast, close deals, and disappear.
Here are five red flags to watch for when comparing solar installers.
🚩 Red Flag #1: “This deal expires TODAY”
Solar incentives, utility programs, and equipment pricing do not change overnight. If a salesperson insists you must sign today to “lock in” pricing, rebates, or availability, that’s a warning sign.
What this often means:
- The installer is paid primarily on commission
- The company prioritizes sales velocity over system quality
- You won’t have time to review contracts, financing terms, or assumptions
What to look for instead: A reputable installer encourages you to take your time, compare bids, and ask questions—because they expect their proposal to hold up under scrutiny.
🚩 Red Flag #2: Quotes that seem too good to be true
Solar pricing varies—but wildly low bids usually mean something is being left out.
Common corners that get cut:
- Lower-tier panels or inverters with shorter warranties
- Undersized systems that won’t meet your actual usage
- Minimal electrical work or rushed installations
- No long-term service plan
Pro tip: Ask every installer to explain why their price is higher or lower than others. If they can’t clearly articulate tradeoffs, that’s a problem.
🚩 Red Flag #3: Sketchy financing schemes or “we’ll pass the tax credit on to you”
This one is especially important for Wisconsin homeowners.
Power Purchase Agreements (PPAs) and other third-party ownership models are not permitted in Wisconsin. That means a solar installer cannot legally own your system and sell you the power it produces.
If a company:
- Offers to “buy the system for you”
- Claims they’ll take the tax credit and pass the savings on
- Uses confusing ownership structures to make the numbers work
…that should immediately raise concerns.
Why this matters: If a company is willing to blur or ignore clear state rules around ownership and financing, it calls into question their ethical boundaries—and what else they may be glossing over in the contract.
What to look for instead: Straightforward ownership models, clear financing terms, and transparency about who owns the system, who claims incentives, and who is responsible long-term.
🚩 Red Flag #4: Vague or overly confident claims about incentives and tax credits
Incentives can be powerful—but they’re also nuanced.
Be cautious if an installer:
- Guarantees a specific tax credit or rebate amount
- Glosses over eligibility requirements
- Downplays timing, caps, or program funding limits
Reality check: Tax credits depend on your tax situation. Rebates depend on utilities, timelines, and program rules. Ethical installers explain this clearly—and put it in writing.
🚩 Red Flag #5: No local presence—or no plan to stick around
Solar systems last decades. Will your installer?
Be wary if:
- The company doesn’t have a local office or service crew
- Warranties are handled “through the manufacturer only”
- Post-install support is unclear or outsourced
Why this matters: If something goes wrong in year 7, you don’t want to be calling a 1-800 number—or discovering the installer has moved on to the next market.
Green flag: Installers who live and work in your region, and who depend on their reputation to earn future business.
The bottom line
Solar should feel empowering—not confusing or rushed.
- Educate first, sell second
- Explain tradeoffs honestly
- Follow state and utility rules without shortcuts
- Design systems for the long haul
- Plan to be your partner for decades, not quarters
If something feels off, trust that instinct. Asking good questions now can save you years of frustration later.
☀️ Want a second opinion?
If you’re comparing quotes, unsure about financing claims, or just want a gut check before signing anything, we’re happy to help.
- No-pressure consultations
- Second opinions on existing quotes
- Plain-language explanations of incentives, ownership, and system design
Whether you move forward with us or not, our goal is simple: help you make a confident, informed decision about solar.
Prefer email? info@ethos.green










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