Commercial Electrical Services in New Hampshire

Your business deserves a safe, efficient, and reliable electrical system—whether you're building from the ground up, renovating a retail space, or upgrading aging infrastructure. Our licensed commercial electricians in Southern New Hampshire deliver expert electrical solutions tailored to your operation's unique needs.

From energy-efficient lighting upgrades to complex service panel installations, we help businesses stay powered, protected, and code-compliant.

Why Choose Us for Your Commercial Electrical Needs?

We understand that downtime costs your business money. That’s why we prioritize fast, dependable service without compromising on safety or quality. Our team works around your schedule to minimize disruption and deliver results that meet the highest standards of workmanship and efficiency.

Comprehensive Commercial Electrical Services

We provide expert electrical solutions for a wide range of commercial environments including offices, retail stores, restaurants, industrial spaces, and more. Services include:

Lighting Solutions

  • Interior & exterior lighting upgrades

  • Energy-efficient lighting controls

  • LED lighting conversions

  • Ballast replacements

  • Security and parking lot lighting installations

Power Distribution & Service Upgrades

  • Single- and three-phase electrical systems

  • Service panel upgrades and replacements

  • Circuit distribution for growing businesses

  • Transformer installations

  • Isolated ground surge protection

Wiring, Circuits & Installations

  • Specialty circuits for equipment or appliances

  • New construction wiring

  • Commercial additions & remodels

  • Phone and data communication lines

  • Small to medium-size motor wiring

Renovations & Remodels

  • New retail storefronts

  • Storefront renovations

  • Tenant fit-outs

  • Electrical for layout changes or business rebranding

Maintenance & Emergency Electrical

  • Electrical troubleshooting

  • Preventive maintenance

  • Code compliance assessments

  • Fast repairs to reduce downtime

Industries We Serve

  • Retail Stores

  • Restaurants & Cafés

  • Office Buildings

  • Warehouses

  • Medical Offices

  • Industrial Facilities

  • Educational Institutions

  • Property Management Firms

Schedule Your Commercial Electrical Services Today - Let’s Power Your Business for Growth

Whether you're upgrading lighting, expanding your building, or starting a new venture, our experienced commercial electricians in Southern NH are ready to help. We bring technical expertise, reliable timelines, and unmatched customer service to every job.

📞 Contact us today to schedule a consultation or request a quote for your commercial electrical project.

Licensed & Insured Electricians
Every project is handled by experienced professionals who meet local and national safety standards.

Upfront Pricing
No surprises — just honest, competitive pricing for top-quality work.

Prompt & Courteous Service
We respect your time, your home, and your schedule.

Commitment to Safety
Our work is always done to code, with your family’s safety as our top priority.

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Serving Homeowners Across Central & Southern New Hampshire

We proudly provide residential electrical services across many towns and communities throughout Central NH. Whether you’re renovating a home, building new, or just need a quick repair — Lenn Johnson Electric is ready to help.

Need fast service? Contact us today to schedule a free estimate or speak with a licensed residential electrician.

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Get a Free Residential Electrical Quote

Have an electrical project in mind? Reach out to Lenn Johnson Electric today. We’ll walk you through your options and provide a clear, no-obligation quote.

👉 Call (603)-496-3990
👉 Or Request a Quote Online

  • Commercial systems typically use higher voltages, three-phase power, and more complex layouts. They require different equipment, materials, and code compliance standards. Our electricians are fully trained in both residential and commercial systems.

  • Yes. We can schedule work during off-hours or weekends to avoid disrupting your business operations. We understand how important it is to keep your doors open and your equipment running.

  • Absolutely. We specialize in energy-efficient lighting upgrades and smart lighting controls that can reduce your energy costs and improve workplace comfort and security.

  • Yes. We pull all necessary permits and ensure every installation meets or exceeds local and national electrical code standards. We also offer code compliance evaluations and upgrades.

  • If you're experiencing frequent breaker trips, planning to install large equipment, or your system is still using an outdated panel, it may be time to upgrade. We’ll assess your current setup and recommend the right solution.

  • We provide commercial electrical services across Central New Hampshire, including towns like Andover, Boscawen, Franklin, Henniker, Hopkinton, Concord, Manchester, Pembroke, and more. If you're unsure whether we serve your area, feel free to contact us — we're happy to help!

Why Choose Us?

  • High Quality Work

  • Quick Response

  • Locally Owned & Operated

  • Flexible 24/7 Hours

  • Excellent At Troubleshooting Electrical Problems

  • Specializing In Modern Kitchen Electrical Wiring & Wiring Of Historic Buildings

  • Wiring For New Home Additions

  • Commercial Electrical New Construction & Repairs

  • Over 16 Years In Business

  • Over 28 Years Of Experience

  • Electrician Since 1985

  • Master Electrician Since 1989