When the power goes out, your home’s comfort and security can quickly disappear. Outages can disrupt your life, from food spoilage to lost communication and halted heating systems, but they don’t have to.
With a properly installed standby generator by an NH-licensed electrician, you can ensure your family’s peace of mind and continuous power during unpredictable weather or power grid failures. At Nelson Electric & Air, your trusted electrician in Londonderry, NH, we’re here to walk you through the process—no technical jargon, just honest guidance from seasoned pros.

Why Are So Many Homeowners Installing Standby Generators?

New England winters are brutal, especially in southern New Hampshire. Ice storms, high winds, and heavy snow regularly knock out power. A standby generator isn’t just about comfort but safety and preparedness. Here’s how a generator installation can protect your home:

• Keeps Heating and Cooling Running: Maintain a livable temperature regardless of the season.
• Prevents Frozen Pipes and Food Spoilage: Avoid costly property damage and food waste.
• Supports Communication: Keep devices charged and stay connected while working remotely.
• Ensures Operation of Medical Devices: Critical for homes with life-sustaining equipment.

More and more homeowners are searching for “electrical services near me” to safeguard their homes with a reliable backup power source.

Not All Generator Installations Are Created Equal

When looking for NH-licensed electricians, it is crucial to select a company that emphasizes quality and safety. Poor installations can involve dangerous situations, such as exposed or improper wiring, unsafe gas connections, and code violations that void warranties and compromise safety
At Nelson Electric & Air, we treat your home like our own:

• No Shortcuts—Ever
• Fully Licensed and Insured Professionals
• Transparent, Honest Pricing and Communication
• We Handle All Permits and Inspections

If you’re looking for a trustworthy electrician in Londonderry, NH, you can rely on us for top-tier artistry and customer care.

What to Expect During the Generator Installation Process

We break it down into three straightforward steps:

Day 1 – Site Preparation

We mark and prep the installation area and lay the concrete pad. If trenching is required for underground wires, we handle it professionally and safely. The generator and all components are delivered and staged.

Day 2 – Electrical Installation

To install the automatic transfer switch and update your electrical panel to meet current code requirements, we will temporarily shut off your power for 4 to 8 hours. Our NH-licensed electricians work efficiently and cleanly to minimize disruption.

Day 3 – Startup & System Walkthrough

We activate and test your new generator and walk you through its operation so you feel confident using it.
Some installations wrap up sooner, but we prioritize safety and quality over speed.

Factors That Influence Installation Cost

We believe in honest, upfront pricing—no hidden fees. Generator installation costs vary based on the following:

• Distance from your main electrical panel
• Property terrain and accessibility
• Whether trenching for underground wiring is needed
• Size and power capacity of the generator

Most full installations (including plumbing) cost between $10,500 and $18,500. We provide a detailed written estimate and lock in your price, shielding you from future equipment price hikes.

Permits and Inspections—Handled for You

As experienced NH-licensed electricians, we manage all necessary paperwork and compliance tasks, including:

• Electrical and plumbing permits
• Utility marking (via Dig Safe)
• Final inspections by your town or city
• You don’t have to worry about the technical details—we’ve covered it.

Why Choose Nelson Electric & Air?

When homeowners in Londonderry and surrounding areas search for “electrical services near me,” they choose us because we offer the following:

• BBB A+ Accreditation
• Verified Contractor by Google (background-checked and insured)
• A family-owned business with a commitment to care and craftsmanship

From the first consultation to the final inspection, we ensure that your generator installation is done correctly, with the same attention we would give to our own home.

Generator Maintenance and Future Electrical Services

After installation, we offer affordable annual maintenance plans to keep your generator under warranty and ready for emergencies. Plus, maintenance plan members receive discounts on all future electrical services, including lighting, outlets, panel upgrades, and more.
Have you already received a quote from another contractor? We’re happy to offer a free second opinion without pressure or sales tactics—just honest feedback from a qualified electrician in Londonderry, NH.

Contact Us Today

Ready to protect your home from power outages? Call 603-703-5509 or text 603-899-7340, or visit www.nelsonelectric-ne.com. Whether you’re in Londonderry, Hudson, Derry, or anywhere in southern NH, we’re your go-to source for electrical services near me.
Let’s talk about your future and ensure that your home stays safe, warm, and connected, no matter the weather.