Solar FAQ: 75 Questions Answered

For most homeowners with $150+ monthly electric bills and a decent roof, yes. Typical payback is 6-10 years with 25-year savings of $30,000-$80,000. The math changed in 2026 since the 30% federal tax credit for purchased systems ended, but PPA/lease options still include the federal benefit through 2027.

The average residential solar system costs $2.50-$3.50 per watt before incentives. A typical 8kW system runs $20,000-$28,000. With a PPA or lease, you can go solar with $0 down and pay only for the electricity produced, typically 10-20% less than utility rates.

Solar panels contain photovoltaic cells that convert sunlight into DC electricity. An inverter converts this to AC electricity your home uses. Excess power goes to the grid (with net metering) or a battery. The system produces power during daylight hours, offsetting your electric bill.

Modern solar panels last 25-30 years with minimal degradation (about 0.5% per year). Most manufacturers warranty 25 years of performance at 80%+ original capacity. The inverter typically needs replacement once at 12-15 years (cost: $1,500-$3,000).

Yes, solar panels work on cloudy days but produce less power—typically 10-25% of full capacity. They work in all weather conditions including rain and snow. Annual production matters more than daily, and systems are designed to account for your local weather patterns.

Yes. Solar panels actually work more efficiently in cold temperatures. While winter days are shorter (less production time), the panels themselves perform better. Snow typically slides off or melts quickly. Annual system design accounts for seasonal variation.

Yes, if properly sized. Most residential systems are designed to offset 80-100% of your electricity usage. A typical home needs 6-10kW (15-25 panels). Your installer will analyze 12 months of electric bills to size your system correctly.

Solar panels don't produce power at night. You either draw from the grid (using net metering credits earned during the day) or from a battery storage system. Most homes stay connected to the grid as backup.

The 30% federal Investment Tax Credit (ITC) for homeowner-purchased systems ended December 31, 2025 under the "One Big Beautiful Bill" passed July 2025. However, PPA and lease agreements still qualify for 30% through December 31, 2027—the solar company claims it and passes savings to you.

Typical savings are $30,000-$80,000 over 25 years depending on your utility rates, system size, and local incentives. Monthly savings average $100-$200 on electricity bills. High-rate areas like California, Hawaii, and the Northeast see the biggest savings.

Average payback is 6-10 years. Factors affecting payback: utility rates (higher = faster payback), system cost, available incentives, and sun exposure. After payback, electricity is essentially free for 15-20 more years.

Watch for: permit fees ($200-$500), electrical upgrades if needed ($1,000-$3,000), roof repairs before installation, tree removal for shade issues, and inverter replacement around year 12-15. Reputable installers include most costs in quotes; always ask what's excluded.

Solar loans make sense if your loan payment is less than your current electric bill—you save from day one. Compare: loan interest rate vs. utility rate increases (historically 3-5% annually). Many homeowners choose $0-down loans with payments lower than their electric bills.

Cash maximizes total savings but requires $15,000-$30,000 upfront. Financing preserves cash while still saving money monthly. Best choice depends on your opportunity cost for that cash. Even financed, most systems show positive cash flow.

Buying maximizes long-term savings (you own the asset). Leasing/PPA requires $0 down with immediate savings but less total return. In 2026, PPA/lease has an advantage: it still includes the 30% federal tax credit (passed to you as lower rates) while purchased systems no longer qualify.

A Power Purchase Agreement (PPA) means a company installs solar on your roof for free, and you buy the electricity it produces at a fixed rate (typically 10-20% below utility rates). You don't own the panels. Contract terms are usually 20-25 years.

A solar lease is a fixed monthly payment for panels on your roof, regardless of production. Like a PPA, you don't own the system. The difference: lease = fixed payment, PPA = pay per kWh produced. Both require $0 down.

Three options: transfer the lease to the buyer (most common, requires their credit approval), buy out the lease and include in sale price, or have the company remove the panels. Most buyers accept lease transfers since they inherit the savings.

Yes, but it costs money. Buyout amounts are specified in your contract—often the remaining payments or a calculated residual value. Early termination without buyout is rarely allowed. Always read contract terms before signing.

Physical installation takes 1-3 days for most homes. However, the full process takes 2-4 months including site assessment, design, permitting, installation, inspection, and utility approval. Permitting is usually the longest wait.

No, when properly installed. Panels are mounted on rails attached to rafters (not just sheathing), with flashing to prevent leaks. Good installers warranty their roof penetrations. Panels actually protect the roof underneath from UV and weather.

Best: asphalt shingle, metal (standing seam), concrete/clay tile. Challenging but possible: flat roofs, wood shake. Not recommended: slate (fragile). Roof should have 15+ years life remaining. South, southwest, or west-facing slopes are ideal.

If your roof needs replacement within 10 years, do it before solar. Removing and reinstalling panels later costs $1,500-$5,000. Get a roof inspection first. Some solar companies partner with roofers for bundled discounts.

Top residential panels: SunPower Maxeon (22.8% efficiency, premium), REC Alpha Pure (22.3%, best value), Panasonic EverVolt (21.7%, reliable), Q Cells (20.6%, budget-friendly). Efficiency matters less than total system cost per watt for most installations.

Inverters convert DC power from panels to AC power your home uses. Types: string inverters (one unit for whole system, $1,000-$2,000), microinverters (one per panel, $1,000-$2,000 more, better for shade), and hybrid inverters (includes battery capability).

Not required, but batteries provide backup power during outages and can increase savings in areas without good net metering. Cost: $10,000-$15,000 for a Tesla Powerwall or similar. Worth it if: you have frequent outages, time-of-use rates, or want energy independence.

Net metering lets you send excess solar power to the grid and receive credit on your bill. When your panels produce more than you use, the meter runs backward. You use those credits at night or on cloudy days. Rules vary by state and utility.

Standard grid-tied solar shuts off during outages (required by law to protect utility workers). To have power during outages, you need a battery backup system or a special inverter with secure power supply feature. This adds $10,000-$20,000.

With net metering, excess power goes to the grid for bill credits. Credit value varies: full retail rate (best), reduced rate, or wholesale rate (worst). Some utilities have annual true-ups; others credit monthly. Check your utility's specific policy.

Technically yes, but expensive and impractical for most. Off-grid requires oversized solar array plus large battery bank ($50,000-$100,000+). You must manage all your own power. Most homes stay grid-connected for reliability and net metering benefits.

Absolutely. Higher utility rates = faster solar payback. Best states for solar savings have high rates: California, Hawaii, Massachusetts, Connecticut, New York. Even low-rate areas benefit as rates increase 3-5% annually while solar costs stay fixed.

Yes. Studies show solar adds $15,000-$25,000 to home value on average (about $4 per watt installed). Owned systems add more value than leased. Buyers pay more for homes with lower operating costs. Solar homes also sell faster.

If you'll live there 2+ more years, yes—you'll save money and increase sale price. If selling within 1-2 years, the ROI is less clear unless you can transfer a lease/PPA. Don't install just before listing; buyers prefer established systems.

Technically possible but rarely makes sense. Removal, transport, and reinstallation costs $5,000-$10,000+. Panels may not fit new roof. Usually better to include panels in home sale price or negotiate value with buyer.

Minimal maintenance. Panels have no moving parts. Rain cleans most debris. Occasional inspection recommended. If very dusty/dirty, annual cleaning costs $150-$300. Monitor production to catch issues early. Most problems are inverter-related.

Typical warranties: panels 25 years performance (80%+ output), inverters 10-25 years, workmanship 10-25 years from installer. Premium brands like SunPower offer 40-year warranties. Always get warranty details in writing.

In most states, no. Solar access laws in 25+ states prevent HOAs from banning solar. However, HOAs can impose reasonable aesthetic requirements (placement, visibility). Check your state's solar access rights and HOA rules.

Yes, metal roofs are excellent for solar. Standing seam metal allows clamp mounts (no penetrations). Metal roofs last 50+ years, longer than panels, so you'll never need to remove panels for roof replacement.

Usually rain does the job. If manual cleaning needed: rinse with garden hose in early morning or evening (avoid thermal shock). For stubborn dirt, use soft brush with soapy water. Never use abrasive materials or pressure washers.

Panels don't stop working at 25 years—they just produce slightly less (80%+ of original). Many continue working 30-40 years. At end of life, panels can be recycled. Recycling programs are expanding as early installations age.

Solar technology is legitimate and millions of homeowners benefit. However, the solar SALES industry has problems: high-pressure tactics, misleading savings claims, and bait-and-switch pricing. Protect yourself by getting multiple quotes, reading contracts carefully, and avoiding same-day signing pressure.

Red flags: door-to-door high pressure, claims of "free" solar (nothing is free), demands to sign today, verbal promises not in contract, extremely low bids. Always: get 3+ quotes, verify contractor license, check reviews, read entire contract, never rush.

Solar sales is highly competitive with high customer acquisition costs. Salespeople often work on commission. This creates pressure to close deals immediately. Good companies focus on education; bad ones focus on pressure. Walk away from anyone who won't give you time to decide.

Key items: total system cost, cost per watt, equipment specifications (panel brand/model, inverter type), production guarantee, warranty terms, financing details (rate, term, total paid), cancellation policy, and what's included/excluded.

Best ROI states (high rates + good incentives): California, Massachusetts, New Jersey, New York, Connecticut. Best sun states: Arizona, Nevada, New Mexico, Texas, Florida. Some sunny states have poor policies (looking at you, Alabama). Check local utility rules.

Yes. Germany, not known for sun, led global solar for years. Cloudy states like Washington, Oregon, and Michigan can still see 6-10 year payback with high utility rates. Annual production matters more than daily sunshine.

State incentives vary widely: state tax credits, rebates, SRECs (solar renewable energy credits), property tax exemptions, and sales tax exemptions. Check DSIRE database (dsireusa.org) for your state's current incentives. Local utility may have additional rebates.

A typical residential system offsets 3-4 tons of CO2 annually—equivalent to driving 7,000-10,000 fewer miles or planting 100 trees per year. Over 25 years, one system prevents 75-100 tons of emissions.

No. Manufacturing has environmental impact, but panels offset that carbon footprint within 1-3 years, then produce clean energy for 25+ more years. End-of-life recycling is improving. Net environmental impact is strongly positive.

Yes. Panels are 90%+ recyclable (glass, aluminum, silicon). Recycling infrastructure is growing as early installations age. Some manufacturers and states have take-back programs. This will become standard as the industry matures.