Solar Generator vs Gas Generator: Which Backup Power Option Is Better for Your Home?

When the power goes out, homeowners typically consider two main options:
a solar generator or a gas-powered generator.

Both provide backup electricity, but they operate very differently. This guide compares solar generator vs gas generator so you can choose the best backup power solution for your home, budget, and outage risk.

Quick Answer

Short outages: Solar generator
Long outages: Gas generator
Best overall setup: Use both together

Each has strengths. The right choice depends on how long outages last in your area and what you need to power.

What Is a Solar Generator?

A solar generator is a battery power station that can recharge from solar panels. It produces clean electricity without fuel or fumes.

Solar generators include:

battery storage
inverter
solar charging capability

They can power:

refrigerator
lights
internet
electronics
small appliances

👉 See: Best Solar Generators for Home Backup

What Is a Gas Generator?

A gas generator produces electricity using gasoline or propane. It delivers higher power output and longer runtime.

Gas generators can power:

sump pumps
well pumps
furnaces
large appliances
multiple circuits

👉 See: Best Generators for Power Outages

Solar Generator vs Gas Generator Comparison

Feature	Solar Generator	Gas Generator
Noise	Silent	Loud
Indoor Use	Yes	No
Fuel	Solar energy	Gas or propane
Runtime	Limited	Long
Maintenance	Low	Moderate
Output Power	Moderate	High
Startup	Instant	Manual

Power Output Differences

Solar generators typically provide:
2000–4000 watts

Gas generators typically provide:
7000–10,000 watts

If you need to run:

sump pump
furnace
well pump

A gas generator is usually required.

If you only need:

refrigerator
lights
electronics

A solar generator can work well.

Runtime Comparison

Solar Generator Runtime

Depends on battery size.

Typical runtime:

fridge → 12–24 hours
lights + internet → 24+ hours

Solar panels can recharge during daylight.

Gas Generator Runtime

Runs as long as fuel is available.

A 5-gallon tank typically runs:
8–12 hours depending on load.

Fuel storage determines runtime.

Cost Comparison

Solar generator
$1500–$5000+

Gas generator
$600–$1500

Solar costs more upfront but has no fuel costs.

Gas is cheaper initially but requires ongoing fuel.

Safety Comparison

Solar Generator

indoor safe
no fumes
quiet
automatic

Gas Generator

must run outdoors
produces exhaust
requires fuel storage
louder

Solar is safer indoors.

Best Use Cases

Choose Solar Generator If:

outages are short
you want quiet power
you live in apartment
you want indoor backup
you want solar charging

Choose Gas Generator If:

outages last many hours
you need high power
you have sump pump
you have well pump
you want whole-home coverage

Best Setup for Most Homes

The best solution is a hybrid setup.

Solar generator:
handles short outages and night use.

Gas generator:
handles extended outages.

This provides complete protection.

Generator Sizing Considerations

If using gas generator:
👉 Read: What Size Generator Do I Need for My House

If using solar:
Choose 2000–4000Wh minimum for essentials.

Frequently Asked Questions

Can a solar generator run a sump pump?
Yes, but runtime may be limited.

Can a gas generator run indoors?
No. Never run indoors.

Which is cheaper long-term?
Solar is cheaper long-term but costs more upfront.

Final Recommendation

For most homeowners:

Solar generator
for short outages and quiet power.

Gas generator
for long outages and heavy loads.

If you want full protection:
Use both.

Related Guides

Best Solar Generators for Home Backup
Best Generators for Power Outages
Generator vs Battery Backup
Generator Sizing Guide
Power Outage Checklist

Bottom Line

Solar generators and gas generators serve different roles. Solar provides quiet, clean backup for short outages. Gas generators provide high-power output for long outages. Choosing the right system—or combining both—ensures your home stays powered during any outage.