Battery Backup for your Well
Keep Your Water Flowing When the Power Goes Out
Lights going out is frustrating. Losing water changes the whole day: no showers, no flushing toilets, no dishes, and no easy way to keep animals watered.
GridZero designs well backup systems that keep water available for your home when the grid goes down.
For 1/2 HP to 5 HP pumps and beyond. No solar required. Fully automatic.
The problem
Your well is part of everyday life at home.
When the power goes out, the pressure tank only buys a little time. Once it is empty, the everyday things your household depends on start to break down: bathrooms, showers, cooking, cleaning, laundry, and water for animals.
A well backup system gives your pump its own automatic power source. When the grid drops, the system switches over so your home can still have water. When utility power returns, the batteries recharge and wait for the next outage.
Automatic
No fuel storage, no startup routine, and no running outside in bad weather. When the grid drops, the system switches over automatically.
Sized to the pump
We size around your actual well pump, pressure tank, starting surge, and water-use goals instead of guessing with a one-size-fits-all battery box.
What the system looks like
What we install
The goal is simple: keep water available at home when the power is out. We connect the right battery and inverter equipment to your well pump, then size it around your pump and the outage time you want covered.
1. Well pump connection
Connected to your well pump
We identify the pump, controls, voltage, and pressure setup so the backup supports the water system your home already depends on.
2. Battery and inverter
Automatic backup without fuel
The inverter senses the outage and the battery powers the pump without asking you to start a generator.
3. Optional recharge
Solar or utility recharge
Utility power recharges the system after the outage. Solar can be added if you want longer backup time or lower well-power costs.
Most systems are installed neatly near the well house, pump controls, garage, or electrical panel area, wherever it makes the most sense for your home.
How it works
Automatic water backup, without a generator routine
The system is built around one job: keep the pump and pressure system ready when utility power drops. It switches, runs, and recharges without turning the outage into a manual project.
Utility power drops
The outage starts at the house, but the well system is already connected to its backup source.
Battery and inverter take over
The inverter senses the outage and supplies clean power to the pump automatically.
Water stays available
The pressure tank, taps, toilets, and daily water needs can keep working during the outage.
The system resets itself
When utility power returns, the batteries recharge and the system waits for the next outage.
Decide how much of the home you want backed up
Some homeowners only want to keep water available. Others also want the refrigerator, freezer, lights, internet, heat controls, or more of the home backed up. We start with what matters most to you, then size the system from there.
Well Backup Only
Protect the water system first
- Best when keeping water available is the main priority.
- Simple, focused, and usually the lowest-cost path to backup power.
- Useful for homes on wells, seasonal cabins, livestock water, and basic household needs.
- Can also help in places where utility service is limited or unavailable.
Most Common
Critical-Load Backup
Water plus the essentials
A battery and inverter system sized for the well pump plus essentials like the refrigerator, freezer, lights, internet, and key heat controls. Solar is often added when you want longer backup time.
Full Off-Grid
Full home independence
For homes designed to operate independently from the utility. This takes more battery capacity, more solar, and a full look at how your home uses power.
You do not have to overbuild. If water is the priority, keep the system focused. If you want more of the home protected later, we can plan for that from the beginning.
FAQ
Common questions before sizing a system
We will ask about your pump, your home, and what you want life to look like during an outage. Those answers guide the system size, equipment location, and whether solar should be part of the plan.
Is this a generator replacement?
For many short outages, yes. The well can keep running without dragging out a generator. For multi-day outages, the batteries need a way to recharge, such as solar, utility power when it returns, or generator charging.
Will it run the whole house?
It can, but it does not have to. Many homeowners start with the well because water is the first thing they miss. If you want the refrigerator, freezer, lights, internet, or more of the home covered, we can size for that too.
What size well pump can you back up?
We design backup systems for well pumps from 1/2 HP to 5 HP and beyond. Pump horsepower and start-up surge matter most. If you know the pump make and model, that gives us a strong starting point.
How long will the system keep my well running?
It depends on battery capacity, how often the pump runs, and how your household uses water. We size around your real routine, whether you want coverage for a few hours or longer outages.
Does this work with a 240V well pump?
Yes. Most submersible well pumps run on 240V. We size the inverter and power equipment for both the normal running load and the larger start-up surge.
Do the batteries work in cold weather?
Yes. Cold can affect battery performance, so we choose equipment suited for North Idaho conditions and place it where it can stay within its operating range, such as a garage, utility room, or insulated enclosure.
Are solar panels required?
No. A battery backup system can work on its own for typical outages and recharge from utility power when the grid returns. Solar is optional, but helpful when you want longer backup time or lower day-to-day well power cost.
How long does installation take?
Most well backup installations are completed in one day. Larger systems or more complex electrical setups may take two days. We handle the permitting and coordination.
What do you need to size it correctly?
Pump specs, pressure tank setup, start-up surge, how your home uses water, and whether you want room to expand later. If you have the pump make and model, that helps us move faster.
Can the system expand later?
Yes. If you think you may want refrigerator, freezer, lights, internet, or more of the home backed up later, we can plan for that during the first design conversation.
Ready for the next step
Keep water available when your home needs it most.
A short conversation about your pump, your home, and what you want covered during an outage. No pressure, no generic package, and no guessing about what your household actually needs.
Or call us directly at 208-244-7304.
What happens next
- We review your pump, where the equipment can go, and what you want backed up.
- We size the system around your pump, water use, and outage goals.
- We recommend a clean path, whether that stays well-only or grows into broader home backup.