What Is a Whole House Generator Battery?

whole house generator battery

A whole house generator battery is a backup power system that can provide electricity to your home during an outage. It runs on energy harvested from solar panels or the grid and stores it for later use.

If you’re a smart homeowner, you’ll install a home battery in tandem with your solar system to gain the most long-term savings possible. You can even save money on your electric bill during peak times when time-of-use rates are higher.


Home battery systems are a cost-effective alternative to generators, which require constant refueling from fossil fuel sources. Moreover, they don’t generate noise or emit pollution.

Whole house generator batteries can be paired with solar panels to store renewable energy from the sun to power your home indefinitely. This can significantly reduce your electricity bills and save you money on future utility costs.

In addition, battery storage can help you avoid costly peak demand charges. It also allows you to use power at reduced rates during non-peak times and build up electricity at low rates during off-peak times.

The price of a whole house generator battery system will depend on the amount of electricity it can store and the type of batteries you choose. For example, a larger battery with more capacity can provide backup power for longer periods of time, but it will also be more expensive to purchase.

Energy Efficiency

A whole house generator battery system is an excellent choice for homeowners who want to reduce their reliance on the grid. These systems, when paired with solar panels, can help you save tens of thousands of dollars in electric bills over the course of a decade or longer.

However, it’s important to understand that the energy efficiency of a whole house generator battery is limited. It’s not possible to fully power an entire home on battery electricity alone, even with a high-capacity lithium-ion battery like the Tesla Powerwall 2.

In addition, it’s impossible to run large appliances, such as air conditioning, Level 2 EV chargers, and electric stoves on a backup battery system for long periods of time.

A home generator, on the other hand, can supply power for up to 50 kilowatts of energy, enough to run many of these larger appliances, including central air conditioning, EV chargers and swimming pools. They also require an ongoing supply of gasoline and other fossil fuels, which is not renewable.


Whole house generators can be noisy, but they’re a lot quieter than portable models. They’re also less prone to breakdowns under heavy use, so they can be more cost-effective in the long run.

They’re also more convenient to maintain compared to fuel-powered generators, which can need regular maintenance and safety checks. Some models, like Kohler and Generac, will even conduct self-diagnosis tests to keep them operating as efficiently as possible.

The noise generated by a generator is not something you want to hear when you’re trying to sleep or relax. Thankfully, there are ways to mitigate this noise, ranging from sound-absorbing materials to soundproof enclosures.


If you have a whole house generator, then it’s important to keep up with the maintenance of your battery. This will help you avoid unnecessary costs and maximize your system’s efficiency.

In addition to regular maintenance, you can also make sure that your battery is charged and ready to go whenever you need it. This can save you money by reducing your electric bill, especially if your utility offers time-of-use rates.

The frequency with which a generator is used is one of the primary factors that influence how often it needs to be serviced. A generator that operates more often requires more attention than a unit that is not used frequently, because it hastens the wear and tear of its components.