Home Generator Installation in Bay Shore, NY

Power On When the Grid Goes Down

Whole house generator installation that keeps your Bay Shore home running during storms, outages, and emergencies—automatically, safely, and without you lifting a finger.

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Whole House Generator Installation Bay Shore

What Happens When Your Power Actually Stays On

You’re not worrying about your sump pump failing during the next nor’easter. Your basement stays dry. Your food doesn’t spoil. Your family doesn’t scramble for flashlights or pack up for a hotel.

If you work from home, you’re still online. If someone in your house uses medical equipment, it keeps running. Your HVAC system doesn’t shut down in the middle of winter or summer.

A whole home generator installation in Bay Shore means automatic backup power within seconds of an outage. No manual switching. No extension cords. No running outside in the rain to pull-start a portable unit. The system senses the loss of grid power, starts itself, and takes over until utility service comes back.

That’s what backup power should do—work so you don’t have to think about it.

Licensed Generator Installers Bay Shore, NY

We've Been Doing This Since 2004

We’ve been handling electrical work across Suffolk County for over 20 years. We’re fully licensed, insured, and local to Bay Shore. We know the housing stock here—a lot of it was built in the 1960s, which means older panels, tighter access, and specific code requirements.

We’ve installed standby generators in single-family homes, attached townhouses, and properties with tricky utility setups. We handle the permits, the inspections, the gas line coordination if needed, and the final connection. You get one team, one timeline, and no surprises on the bill.

Every job comes with upfront pricing, a free estimate, and a 100% satisfaction guarantee. We’ve earned the Angie’s List Super Service Award seven years running because we show up on time, do the work right, and don’t leave until it’s done correctly.

Home Standby Generator Installation Process

Here's How a Generator Install Actually Goes

First, we come out and assess your home. We look at your electrical panel, your fuel source (natural gas or propane), and where the generator will sit. We talk through your power needs—what you want running during an outage and what you can live without.

Then we size the system. A whole house generator installation in Bay Shore typically ranges from 16kW to 24kW depending on square footage and load requirements. We recommend the right unit for your home, not the biggest one we can sell you.

Once you approve the estimate, we pull the permits and schedule the install. The work usually takes one to two days. We set the generator on a concrete pad, run the electrical and fuel connections, install the automatic transfer switch, and test the system under load. After that, we coordinate the final inspection with the town.

When it’s done, you’ll have a system that monitors your utility power 24/7 and kicks on automatically when it detects an outage. You don’t touch anything. It just works.

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About Marra Electric

Backup Generator Installation Bay Shore, NY

What's Included in Your Generator Installation

You’re getting a complete turnkey setup. That means the generator unit itself, the automatic transfer switch, all wiring and electrical connections, the concrete pad or mounting platform, and any conduit or protective housing required by code.

We handle the permit applications with the Town of Islip and coordinate inspections. If your install requires a new gas line or propane tank setup, we work with licensed gas contractors to get that done—we don’t subcontract the electrical portion, but we do coordinate the fuel side so you’re not managing multiple vendors.

Bay Shore homes often need panel upgrades before a generator goes in, especially if you’re still running a 100-amp service. We’ll tell you during the estimate if that’s the case. A 200-amp panel is standard for most whole home generator installations and ensures you have enough capacity to run your house safely.

You’ll also get a walkthrough on how the system operates, how to check oil and coolant levels, and when to schedule maintenance. Most manufacturers recommend service every year or every 200 hours of runtime, whichever comes first. We offer maintenance plans, but you’re not locked into anything.

How much does a whole house generator cost in Bay Shore, NY?

A complete home standby generator installation in Bay Shore typically runs between $8,000 and $16,000. That includes the generator unit, transfer switch, installation labor, permits, and inspections. The final cost depends on the size of the generator, your existing electrical setup, and whether you need a panel upgrade or new gas line.

Smaller systems—around 16kW to 18kW—are usually enough for essential circuits like your refrigerator, sump pump, a few lights, and your heating system. Larger systems in the 22kW to 24kW range can power your whole house, including central air, multiple appliances, and outlets throughout the home.

If your electrical panel is outdated or undersized, you may need an upgrade before the generator goes in. That adds to the cost but it’s also a necessary safety improvement. We give you a full breakdown during the free estimate so there’s no confusion about what you’re paying for.

Financing is available if you want to spread out the payments. Most installations qualify for monthly payment plans starting around $120 to $150, depending on the term and your credit.

How long does it take to install a home generator in Bay Shore?

Most whole house generator installations in Bay Shore take one to two days once permits are approved. The actual installation work—setting the unit, running electrical and fuel lines, installing the transfer switch, and testing the system—is usually finished in a day if everything goes smoothly.

The timeline can stretch if we’re also upgrading your electrical panel or if the gas line needs to be extended. Permit approval with the Town of Islip typically takes a few days to a week, depending on their current workload.

We schedule the work around your availability and keep you updated if anything changes. Once the generator is in, we run it through a full test cycle to make sure it starts correctly, transfers power as it should, and shuts down properly when utility power is restored.

After installation, the town inspector comes out for a final check. That usually happens within a few days of us finishing the job. Once it passes inspection, your system is fully operational and ready to go.

Will a generator really keep my basement from flooding during a storm?

Yes, if your sump pump is connected to the generator’s backup power. Bay Shore gets hit with heavy rain and coastal storm surge, especially during nor’easters and hurricane season. If your power goes out and your sump pump stops running, water can back up fast.

A whole home generator installation keeps your sump pump running during an outage. The transfer switch routes power to your pump within seconds of the grid going down, so there’s no gap in protection. That’s critical if you have a finished basement, stored belongings, or mechanical systems below grade.

We make sure your sump pump circuit is included in the transfer switch setup. If you have a battery backup sump pump as a secondary layer, even better—but the generator is your primary defense during extended outages.

Flooding damage from a failed sump pump can easily cost $10,000 or more when you factor in water extraction, drying, mold remediation, and replacing damaged materials. A generator is cheaper than one bad flood.

Can I run my whole house on a generator or just certain circuits?

You can do either, depending on the size of the generator and how your transfer switch is set up. A whole house generator installation in Bay Shore with a larger unit—typically 20kW or higher—can power your entire electrical panel, meaning everything in your home stays on during an outage.

If you go with a smaller generator or want to keep costs down, you can choose specific circuits to back up. Most people prioritize the refrigerator, sump pump, heating or cooling system, a few lights, and outlets for charging devices or running medical equipment.

We help you figure out what makes sense based on your actual power usage. We calculate your load requirements during the estimate so the generator isn’t undersized or oversized for your needs.

Some homes in Bay Shore have high electrical demand—central air, electric water heaters, multiple refrigerators or freezers. If that’s your situation, we’ll recommend a larger unit or help you decide which circuits matter most. The goal is reliable backup power that fits your budget and covers what you actually need during an outage.

Do I need a permit to install a generator in Bay Shore?

Yes. Any permanent home standby generator installation in Bay Shore requires a permit from the Town of Islip. That covers the electrical work, the generator placement, and the fuel connection if you’re tying into a natural gas line or installing a propane tank.

We handle the permit applications as part of the installation. You don’t need to go to the building department or deal with paperwork. We submit everything, coordinate the inspections, and make sure the job meets local code requirements.

The town inspector checks the installation after we’re done to verify it’s safe and compliant. This usually includes the generator pad, the transfer switch wiring, the fuel connections, and the clearances around the unit. Once it passes, you’re good to go.

Skipping the permit isn’t worth it. If you try to sell your home later and there’s an unpermitted generator install, it can hold up the sale or cost you money to bring it up to code after the fact. We do it right the first time so you don’t have issues down the road.

What's the difference between a portable generator and a whole house standby generator?

A portable generator is something you store in your garage, wheel out during an outage, and manually start. You run extension cords to appliances or plug it into a manual transfer switch if you have one installed. It’s cheaper upfront but requires you to be home, have fuel on hand, and physically set it up every time the power goes out.

A whole house standby generator is a permanent installation that sits outside your home, connected to your electrical panel and fuel source. It monitors your utility power around the clock and starts automatically within seconds of an outage. No cords, no manual startup, no refueling in the middle of a storm.

Portable units also can’t legally power your whole panel without a transfer switch, and even then, they’re limited by wattage. Most portable generators max out around 7,500 watts, which isn’t enough to run central air, electric heat, or multiple large appliances at once.

Standby generators in Bay Shore typically range from 16kW to 24kW, giving you enough power to run your home like normal. They’re quieter, safer, and don’t require you to store gasoline. The upfront cost is higher, but the convenience and reliability make it worth it if you’re serious about backup power.

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Bay Shore, NY is located in Suffolk County in New York State

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