1. Choose your backup priorities
Tell us which equipment you want running during an outage. We assess starting and running loads, your panel, and whether load management makes sense.
Standby Generator Installation in Tewksbury, MA
Automatic backup power, planned around your home
Plan backup power for your Tewksbury home with a standby generator and automatic transfer switch sized for the circuits you want to protect.
Start with an in-home assessment of your electrical loads, generator location, and natural gas or propane supply.
Get a written installation scope covering electrical work, permit coordination, fuel connections, and startup testing.
Licensed & Insured
Google Guaranteed
Trusted Since 1979
Locally-Owned
Is your home prepared for the next outage?
Why you Might Consider a Standby Generator...
You Work from Home
Include your home office, router and other priority circuits in the backup plan. Generator startup takes time, and internet service still depends on your provider.
Medical Equipment in the Home
A standby generator has a startup and transfer delay. For medical equipment that needs continuous power, follow the equipment provider’s separate battery-backup and emergency plan.
Refrigerators & Freezers at Risk
Refrigerators and freezers can be priority loads. We account for compressor startup demand when sizing the generator and selecting backed-up circuits.
Frequent Power Outages
If outages disrupt your household, choose which loads matter most and how long you may need backup power. Fuel availability and regular maintenance are part of that plan.
You Have a Sump Pump or Well
If your home uses a sump pump or well pump, include its starting power needs in the assessment. Backup coverage depends on the generator size and circuits connected.
Heating or Cooling Stops Working
Heating and cooling equipment can be among your largest loads. We review furnace, heat pump and air-conditioning requirements before recommending generator capacity or load management.
Standby generator services in Tewksbury
Our licensed electricians handle all aspects of generator work — from new installations to maintenance and troubleshooting.
🏠 Whole-Home Standby Generator Installation
Choose essential-circuit or broader whole-home coverage. Your proposal identifies the generator, transfer equipment, electrical work, site preparation and any separate fuel work.
⚠️ Generac Generator Installation
We assess Generac standby generator options against your home’s running and starting loads. Model selection, fuel requirements and warranty details belong in your written proposal.
🔄 Automatic Transfer Switch Installation
An automatic transfer switch detects utility loss and transfers the selected loads after the generator starts. It returns them to utility power when service is restored.
🔌 Portable Generator Hookup
Already own a portable generator? We can install a manual transfer switch or interlock kit so you can safely connect it to your home's panel.
If you’re adding a generator, it may also be the perfect time to look at getting a panel or service upgrade
What to expect from your Sylvester Electric generator installation
We believe in clear communication at every step. Here's exactly what happens when you hire Sylvester Electric for a Generac generator install in Tewksbury.
2. Review location and fuel supply
We evaluate generator placement, manufacturer clearances, access, noise considerations and natural gas or propane capacity. Fuel work is identified in the proposal.
3. Coordinate Tewksbury permits
Tewksbury requires electrical, plumbing and gas permits to be secured by the respective licensed contractors. We confirm the permits and inspections that apply to your project through the Tewksbury Building Department.
4. Install the generator and transfer equipment
The agreed work may include a pad, electrical connections, transfer switch and coordinated fuel connections. Equipment availability and site conditions affect scheduling.
5. Complete inspections and startup testing
Required inspections and final testing are part of the installation process. We demonstrate outage transfer and restoration, and explain the brief startup delay.
6. Understand operation and maintenance
We review the controls, exercise cycle, maintenance schedule and how to request service. Keep manufacturer instructions and your equipment details accessible.
How much does a generator install cost in Tewksbury?
Your installation price depends on the equipment, electrical work, generator location and fuel supply. Use the ranges below to begin planning, then request a project-specific estimate.
| Generator size | Planning range |
|---|---|
| 10 kW standby generator | $8,000–$11,177 |
| 18 kW standby generator | $14,103–$16,000 |
| 24 kW standby generator | $17,543–$19,000 |
These ranges are planning references from our published pricing, not a quote or a statement of what every Tewksbury homeowner pays. Confirm current pricing, equipment and inclusions in your written proposal.
What can change your installation price?
Generator capacity, transfer switch selection, load management, pad and site work, electrical cable runs, gas line or propane work, meter capacity, and permit requirements all affect the scope. A larger generator is not automatically the best fit.
Ask your estimator to identify what is included, what is separate, and any assumptions about fuel supply or site conditions before you approve the work.
Every home is different. Call us at (978) 957-3422 for a free in-home estimate — we'll give you an exact price before any work begins.
Why Tewksbury homeowners choose Sylvester Electric
On- time Guarantee
We respect your time. We arrive within the scheduled time window.
Upfront Pricing
We give you a firm price before we unscrew a single panel. No surprise hourly overages.
Family owned since '79
We aren't a franchise. We live in Dracut. We treat your home like it's our neighbor's—because it is.
Planning a Standby Generator Installation?
Talk with our team about your backup priorities.
Call to discuss your project and appointment availability.
Request your Tewksbury generator consultation
Tewksbury Standby Generator FAQ's
Is a standby generator right for my Tewksbury home?
Consider the equipment you want to keep running, your experience with outages, your fuel supply and your budget. An assessment helps compare essential-circuit backup with broader coverage. A generator has a startup delay and does not replace an uninterrupted-power plan for critical equipment.
How long does generator installation take?
The schedule includes assessment, equipment availability, permits, electrical installation, fuel connections, inspections and startup. On-site work is only part of the timeline. Your written proposal should identify the expected schedule and any dependencies.
What permits are needed in Tewksbury?
Tewksbury requires electrical, plumbing and gas permits to be secured by the respective licensed contractors. The exact approvals depend on the installation and fuel work. We confirm the applicable permit and inspection requirements with the Tewksbury Building Department.
What size standby generator do I need?
Sizing depends on the running and starting loads of the equipment you want to back up, not square footage alone. We assess large loads such as heating, air conditioning and pumps, plus whether load management can meet your priorities with a smaller generator.
How is a standby generator different from a portable generator?
A standby generator is permanently installed, typically uses natural gas or propane, and works with an automatic transfer switch. A portable generator requires manual setup and approved connection equipment. Either option powers only the loads supported by its capacity and installation.
Can you help with generator maintenance or service?
Call (978) 957-3422 to discuss your generator model, service needs and appointment availability. Regular maintenance follows the manufacturer’s schedule. We confirm the scope and availability when you contact our team.
Schedule your free generator estimate in Tewksbury
Don't wait for the next storm. If your home is showing any of the warning signs above — or you simply want reliable backup power — reach out to Sylvester Electric today.
Other Electrical Services we Offer in Tewksbury
Level 2 home charger installation. We handle capacity checks, wiring, and permits.
Upgrade your electrical panel from 100A to 200A or 400A to support modern electrical demands.
🔧 Other Electrical Services
Troubleshooting, breaker replacement, outlets, wiring issues.
Standby Generators are often completed alongside other improvements. Our licensed electricians handle it all.
Master Electricians
Code Certified
Established 1979
Locally Owned