Solar Energy Blog

Expert guides, reviews, and tips to help you make informed solar energy decisions.

Buying Advice6 min read

Top 5 Solar Sales Tactics to Watch Out For in 2026

The pressure plays solar salespeople still run in 2026, how each one works on a homeowner, and the one-line counter to each.

Buying Advice7 min read

Selling a House With Solar Panels: Transfers, Buyouts, and Liens

What actually happens to a loan, lease, or PPA when the house sells - transfer, buyout, and lien mechanics, and what to have ready before listing.

EV Charging8 min read

How Many Solar Panels Does It Take to Charge an EV? The Panel-Count Math

The direct answer with the math shown: 5-10 panels for a typical EV at 30-40 miles/day, 8-13 for a pickup. A vehicle-by-miles table built from published EPA efficiency figures (Ioniq 6 through F-150 Lightning) on the 400W x 4.7 sun-hours x 0.8 model (1.504 kWh/panel/day), plus the night-charging/net-metering caveat and when a battery closes the gap.

Heating & Cooling9 min read

Best Electric Baseboard Heaters 2026: Specs, Monthly Cost, and Sizing

Real spec tables instead of listicle fluff: Fahrenheat PLF (full 500-2,000W ladder), QMark HBB, Dimplex PC4015W31, Cadet SoftHeat and F series, all from manufacturer/retailer spec sheets. Plus a cost model with the formula printed on the page ($166/mo for a 1,500W unit at the 18.44¢ national average, 20 hrs/day) and a 10 W/sq ft sizing guide with cold-climate corrections.

Backup Power9 min read

Winter Storm Backup Power 2026: Wh Budgets, Cold-Weather Batteries, and Safe Heat

Winter outages are not summer outages with snow: batteries lose 15-20% capacity in the cold (2026 ice-storm testing), a single 1,500W space heater eats a 2kW generator's headroom, and whole-home electric heat is out of reach of small backup. The 48-hour 2,500-4,500 Wh refrigerator budget, fuel cost per kWh, freeze-protection priorities, and the CPSC rules snow does not exempt.

Backup Power9 min read

Hurricane Season 2026 Backup Power: Lead Times, Costs, and the Battery vs Generator Call

NOAA's below-normal 2026 forecast (8-14 named storms) says nothing about landfall risk (Andrew, 1992). The real deadline is installer lead times: standby installs run weeks to months at peak. Three cost tiers, a battery-vs-generator-vs-solar-generator decision matrix, fuel math, and a readiness checklist.

Homeowner Guide9 min read

Why Is My Electric Bill Still High After Going Solar? The 5-Check Diagnostic

Panels producing fine but the bill didn't drop like the proposal promised? Run a 5-check diagnostic: production vs P50 (irradiance-adjusted, never nameplate), TOU misalignment, export-rate reality in NEM 3.0/net-billing states, true-up and minimum-bill surprises, and load growth. Each check names what to measure, where, and a rule-of-thumb pass/fail, plus what to do about each finding.

EV Charging8 min read

The True Cost of Charging Your EV at Home: Taxes, Fees, TOU Rates, and Charging Losses

Your EV doesn't pay the advertised rate. It pays generation + delivery + taxes/fees, times 1/0.85–1/0.90 for AC Level 2 losses. The EIA May 2026 anchor (18.44¢/kWh national average), four-state spread from Idaho 12.35¢ to Hawaii 52¢, a labeled worked example, and why your tariff sheet — not a blog — holds your TOU prices.

Market Insight8 min read

Home Battery Prices in 2026: The LFP Price Crash and What It Means for Your Payback

LFP cells hit ~$84/kWh (BNEF, Q1 2026) and packs are under $45/kWh — but installed home batteries still run $800–$1,650/kWh. Why soft costs dominate your quote, what the equipment tailwind does move (battery-only retrofits), and how to normalize any quote to $/kWh usable, with our $700/$1,000/$1,300 calculator tiers as the anchor.

Homeowner Guide9 min read

Why Is My Electricity Bill So High? Rates, Usage & What to Do

Your bill is two numbers multiplied together: your rate per kWh and the kWh you use. Rates hit 18.44¢/kWh in May 2026 (+11.1% since 2024) while summer AC and winter heat spike usage. The 14-appliance watt table, the state-by-state rate picture, and the Energy Bill Analyzer to tell which side is hitting you.

Consumer Protection11 min read

Solar Scams & Red Flags 2026: 8 Warning Signs and a Printable Checklist

The #1 solar deception in 2026 is installers quoting the 30% federal credit on owned systems (25D expired; 48E deadline passed → $0 federal credit). Eight red flags across the full journey — pre-sale to post-install ghosting — each with the pitch, the reality, and a free tool to verify it, plus a printable checklist.

Homeowner Guide10 min read

What I Wish I Knew Before Going Solar: 10 Regrets Homeowners Report

The regrets homeowners report again and again — not shopping 3+ quotes, 15–30% dealer fees, assuming the 30% credit still applies (25D expired; 48E deadline passed), skipping hidden costs. Each paired with a verifiable 2026 number and the free tool that catches it.

Comparison7 min read

Why Solar Tools Should Be Free: No Phone Numbers, No Hidden Fees

The problem with gated solar calculators and why EnergyTools provides professional-grade solar tools free for everyone — no sign-up, no catch.

Policy11 min read

How NEM 3.0 Changes Solar ROI: What Homeowners Need to Know

California's NEM 3.0 slashed solar export credits by 75%. Here's how it affects payback periods, why batteries are now essential, and what other states can learn.

Consumer Protection10 min read

Top 5 Solar Sales Tactics to Watch Out For in 2026

The most common deceptive solar sales tactics in 2026 — expired ITC claims, pressure pricing, inflated production, hidden dealer fees, and misleading 'free solar' offers. Learn how to protect yourself.

Consumer Guide8 min read

How to Detect Expired ITC Claims in Solar Quotes (2026)

Step-by-step guide to spotting when a solar quote incorrectly claims the old 30% federal ITC that expired for owned residential systems. Includes real examples and verification tools.

Urgent6 min read

All Major OBBBA Deadlines Have Passed — What's Left for Solar & EVs

Three major OBBBA deadlines have passed — Section 30D EV credit (Sep 30, 2025), Section 30C charger credit (June 30, 2026), and Section 48E solar construction-start (July 4, 2026). Learn what ended and what remaining options exist.

Written & reviewed by

EnergyTools Research Team — Solar Energy Research Group

The EnergyTools Research Team compiles and verifies residential solar data from NREL, EPA, and state utility commissions. Methodology is reviewed quarterly.

  • Source data: NREL PVWatts V8 + Utility Rates V3 APIs
  • Source data: EPA FuelEconomy.gov vehicle efficiency data
  • Methodology reviewed quarterly

Methodology & data sources:NREL PVWatts, EPA FuelEconomy.gov, state utility commissions— updated 2026.