Generators – Whole Home Backup Without the Guesswork
For homes that require standby power or are not yet ready for battery storage, generators provide dependable whole-home backup during utility outages. 603 Solar installs automatic transfer switch (ATS) standby generators, primarily Generac systems, fueled by propane or natural gas.
Backup Power Benefits
- Automatic power during utility outages
- Whole-home coverage (no load-shedding)
- Works with or without solar
- Excellent for rural properties and well pumps
- Lower upfront cost compared to large storage systems
Backup Power Benefits
- Automatic power during utility outages
- Whole-home coverage (no load-shedding)
- Works with or without solar
- Excellent for rural properties and well pumps
- Lower upfront cost compared to large storage systems
Specifications
- Automatic Transfer Switch (ATS)
- Standby whole-home units
- Propane or Natural Gas
- Primarily Generac brand installations
Main Considerations

Battery vs. Generator
Batteries are silent and seamless, but not always sufficient for heavy or long-duration loads. Generators excel in prolonged outages or high-load homes.

Fuel type & infrastructure
Propane or natural gas service must be available or installed.

Maintenance
Standby generators require periodic maintenance; while we can perform some service work, we do not advertise ongoing maintenance plans at this time.

Redundancy
Some customers choose both storage + generator for layered resilience.
FAQs: Generators in NH, MA & ME
What is a standby generator and how does it work?
A standby generator is a permanent, automatic backup power system for your home. At 603 Solar, we install Generac standby generators with an automatic transfer switch (ATS) that detects power outages and immediately powers your home without any manual intervention.
What size generator do I need for my home?
The right generator size depends on your home’s total electrical load and essential appliances. 603 Solar performs a detailed load assessment to ensure your generator can handle everything from HVAC systems to well pumps, providing reliable whole-home backup.
Can a generator power my entire home?
Yes, properly sized standby generators installed by 603 Solar can provide full-home coverage without load-shedding. This ensures that your lights, appliances, and critical systems continue operating seamlessly during outages.
What is an automatic transfer switch (ATS)?
An ATS is a critical component that automatically switches your home’s power source from the utility to the generator during an outage. 603 Solar includes ATS installation with all standby generators to provide instant, hands-free backup power.
What fuel types are used for residential generators?
603 Solar installs standby generators that run on propane or natural gas. These fuels provide reliable, long-lasting backup power and are easily integrated into most homes with existing infrastructure or new installations.
How long can a generator run continuously?
Standby generators can run for extended periods as long as fuel is available. 603 Solar ensures your generator is sized correctly and connected to a sufficient fuel supply to maintain power for prolonged outages.
What is the difference between portable and standby generators?
Portable generators are small, moveable units that require manual setup, fueling, and wiring, while standby generators are permanently installed, automated, and ready to power your home instantly. 603 Solar specializes in standby systems for seamless, whole-home protection.
Can generators work with solar systems?
Yes. Generators can complement solar systems, providing backup during extended outages when solar production is insufficient. At 603 Solar, we ensure your generator installation is compatible with your solar array for layered energy resilience.
Can 603 Solar generators work with existing solar systems?
Absolutely. Our team can integrate a standby generator with your current solar setup, ensuring your home has continuous power even when the sun isn’t shining or during extended grid outages.
Can I combine a generator with battery storage for added resilience?
Yes! Many 603 Solar customers choose both battery storage and a standby generator. Batteries handle short-term outages silently and seamlessly, while generators provide extended backup for high loads or prolonged power loss.
Who is the ideal candidate for a 603 Solar generator installation?
Homes in rural areas, properties without natural gas or propane for backup alternatives, or anyone needing whole-home backup during outages are ideal. 603 Solar generators are especially suited for well pumps, HVAC systems, and homes not yet ready for solar battery storage.
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