Building a standby generator division

Why electrical contractors add generators

Standby generators sit at the intersection of skills an electrical contractor already has: load calculations, panel and transfer switch work, permits and inspections. Demand is driven by outages, and outages in bad years have become long. The Energy Information Administration reports US electricity customers experienced an average of 11 hours of electricity interruptions in 2024, the most in ten years, and that major events such as Hurricanes Beryl, Helene and Milton accounted for 80% of those hours^[1].

The averages hide wide variation. Interruptions not caused by major events routinely average about two hours a year, while customers in South Carolina experienced nearly 53 hours in 2024^[1]. That pattern shapes the business: demand spikes after big storms, concentrates in exposed regions, and depends on the memory of the last long outage. The Atlantic hurricane season runs from June 1 to November 30^[5], which is when many coastal and southeastern customers start calling.

Three businesses in one

Many contractors focus on installs and treat maintenance as optional. That is a mistake. Maintenance plans create recurring revenue, keep units ready for the next outage and bring technicians back to customers who will need other electrical work.

Sizing honestly: whole-home or essential circuits

The sizing conversation is where trust is won or lost. Some customers want the whole house to run as if nothing happened; others need the furnace, refrigerator, well pump, sump pump and a few circuits, and would rather spend less. Present both options with what each covers, and base the recommendation on a load calculation, not on the largest unit you can sell.

• List the loads the customer considers essential, including medical equipment, and confirm their starting requirements.
• Explain load management options that let a smaller unit cover large appliances by shedding other loads.
• Show the fuel consumption difference between sizes, especially for propane customers who must refill tanks during long outages.
• Put the covered circuits in writing on the proposal, so expectations match what happens in the first outage.

Dealer programs

Most residential standby generators are sold through authorized dealers. Manufacturer programs typically offer product training, warranty registration, technical support, marketing materials and sometimes leads, in exchange for training requirements, minimum volumes or service obligations. Compare programs on what you will actually use.

1. What training is required, and how soon can technicians complete it?
2. Who handles warranty claims, and how quickly are parts shipped?
3. Are leads shared, and on what terms?
4. What are the service and response obligations after an outage?
5. How are product shortages handled after major storms, when everyone orders at once?

The installation workflow

1. 01

   Site assessment

   Calculate the load the customer wants to cover, choose whole-home or essential-circuit coverage, and pick a location that meets manufacturer and code clearances from windows, doors, vents and property lines.

2. 02

   Fuel plan

   Confirm the fuel source and capacity. Natural gas is used in 58% of US homes^[3], but an existing meter and gas line may not support a generator's demand; others will need propane storage.

3. 03

   Permits and approvals

   Pull electrical permits, gas permits where required, and check zoning, setback and homeowner association rules.

4. 04

   Utility coordination

   Request any gas meter upgrade from the utility early; it is often the longest lead time in the project.

5. 05

   Install

   Set the pad and unit, install the transfer switch, connect fuel by a licensed gas fitter or plumber, and wire controls.

6. 06

   Inspect and commission

   Pass inspections, test the transfer under load, register the warranty and set the exercise schedule.

7. 07

   Train the customer

   Show the homeowner what happens in an outage, what the indicators mean and what not to do, and enroll them in maintenance.

Licensing and trades

Most US states require electricians to be licensed^[2], and transfer switch and panel work will need electrical permits and inspection. Gas piping is usually licensed separately, often to plumbers or gas fitters. Decide whether you will employ licensed gas fitters or subcontract the fuel connection, and put the responsibilities in writing so the customer has one point of contact.

Safety and placement

Generators burn fuel next to occupied homes. Each year more than 400 Americans die from unintentional carbon monoxide poisoning not linked to fires, and more than 100,000 visit an emergency department^[4]. Placement clearances, exhaust direction and working carbon monoxide alarms in the home are part of the job, not an upsell.

• Follow manufacturer clearances and local code for distance from openings and air intakes.
• Recommend, and where allowed install, carbon monoxide alarms on each level of the home.
• Explain to customers why portable generators must never run in garages or near windows, and why backfeeding through an outlet endangers utility workers.
• Use a listed transfer switch or interlock on every connection, including portable generator inlets.

Maintenance plans and storm readiness

Build the maintenance plan before the first install, and offer it at the proposal stage. A typical plan includes scheduled service following the manufacturer's intervals, inspection of the battery, fluids, filters and connections, an exercise and transfer test, and a priority response after outages.

• Schedule pre-season checks before your region's storm season, for example ahead of June in hurricane areas.
• Keep a parts stock of the items most likely to fail after long runs.
• Track every unit you installed or service, with model, fuel type and last service date.
• Plan who answers the phone during a regional outage, when every customer calls at once.

Outage days overload office phones. An AI Employee such as Ava can answer every call on the schedule you choose, capture the job and send urgent no-power cases to the on-call technician, so the office handles callbacks instead of voicemail.

Light commercial opportunities

Once the residential process works, small commercial sites become a natural extension: medical and dental offices, small grocery and convenience stores, churches, veterinary clinics and property managers' common systems. These customers often have a stronger financial reason to avoid downtime, such as spoiled inventory or closed appointments, and they value maintenance contracts with guaranteed response. They also bring larger units, three-phase service, more complex permits and sometimes code requirements specific to the occupancy, so price and staff them as their own project type.

Staffing, inventory and lead times

Start with one installation crew led by a licensed electrician and a technician trained for maintenance. Generator demand surges after major storms, and supply can tighten at the same moment. Hold a small inventory of popular sizes if your cash allows, tell customers realistic lead times in writing, and avoid promising installs before the next storm when units and gas meter upgrades may not arrive in time.

Example: an electrical contractor's first year

Example (fictional): Coastal Current Electric, a seven-electrician shop, joined a manufacturer's dealer program after a week-long regional outage brought dozens of calls it could not handle. It trained two electricians, partnered with a licensed gas plumber, and wrote a site assessment checklist. The owner set a rule that every proposal includes a maintenance plan option and a written lead time.

The first year produced 38 installs and 52 maintenance agreements, including customers who already had generators installed by others. The longest delays were gas meter upgrades, which the company now requests from the utility the day a contract is signed.

Before you start

• Confirm licensing for electrical and gas work in your area, and your insurer's position on generator installs.
• Choose a dealer program and complete training before marketing.
• Build the assessment, proposal and maintenance plan templates.
• Line up permit and utility contacts and learn their lead times.
• Decide how phones and scheduling will work during outages.

For related decisions, see the service line checklist, whether an HVAC company should add electrical and expanding into commercial kitchen repair.