☀️ SolarPanelEstimator.com

Solar Savings for a $100/Month Electric Bill

See how solar panels handle your electricity costs — no signup required

✓ Free, instant, anonymous. No email required.

At average US electricity rates, a $100 monthly bill translates to roughly 741 kWh of consumption per month. That's a well-defined target for solar: a system sized to that load will cover your bill in most months, with net metering credits banking excess production for cloudy periods. Select your state below to see the full financial picture for your location.

$100

Monthly Bill

$1,200

Est. Annual Cost

80–100%

Potential Offset

Loading calculator…

Solar for a $100/Month Bill — FAQ

How many solar panels does the average home need?▾
Most US homes need between 15 and 30 panels (6–12 kW system). The exact number depends on your electricity usage, your state's sun hours, roof orientation, and the wattage of the panels you choose. Enter your bill or usage above to get a personalized estimate.
Can my HOA prevent me from installing solar panels?▾
In most states, no. Over 25 states have solar access laws that limit or prohibit HOA solar restrictions. California, Florida, Texas, Colorado, and New York all have strong protections. Your HOA can still regulate aesthetics (panel placement, color of conduit), but cannot block installation outright. Check your state's laws at dsireusa.org.
What is net metering and how does it affect my savings?▾
Net metering is a utility billing arrangement where your excess solar production flows back to the grid and you receive a credit on your bill — usually at the retail electricity rate. Most US states require investor-owned utilities to offer net metering, though credit rates vary. Our calculator assumes full retail-rate net metering credits.
Should I add battery storage to my solar system?▾
Battery storage (like the Tesla Powerwall or Enphase IQ Battery) costs an additional $10,000–$15,000 per battery. It makes sense if: (1) you're in a state with unfavorable net metering (like California's NEM 3.0), (2) you experience frequent outages, or (3) you want to maximize self-consumption. For most homeowners with standard net metering, batteries don't improve payback period.
How do rising electricity rates affect solar ROI?▾
Every 1¢/kWh increase in your utility rate improves your solar savings proportionally. If rates rise 3% annually (historical average), your payback period shortens and 25-year savings grow substantially. Solar essentially locks in your electricity cost at installation, hedging against future rate increases.

More Solar Calculators & Guides

→

Free Solar Panel Calculator

Full calculator — adjust every input for a custom estimate

→

Solar Savings on a $300/Month Bill

How solar panels handle a $300 monthly electricity bill

→

Solar Savings on a $250/Month Bill

How solar panels handle a $250 monthly electricity bill

→

Solar Savings on a $150/Month Bill

How solar panels handle a $150 monthly electricity bill

→

6 kW Solar System

Full breakdown for a 6 kilowatt solar installation

→

8 kW Solar System

Full breakdown for a 8 kilowatt solar installation

→

Solar for a 3,000 Sq Ft Home

Panel count and cost for homes around 3,000 square feet

→

Solar for a 2,000 Sq Ft Home

Panel count and cost for homes around 2,000 square feet

→

Solar Calculator — Texas

State-specific solar estimates for Texas homeowners

→

Solar Calculator — Illinois

State-specific solar estimates for Illinois homeowners

Disclaimer: Calculator assumes national average electricity rates and sun hours. Select your state above for location-specific estimates. Not financial advice.