Homegrid Batteries

Homegrid Batteries: Solar Batteries Sized to Your House, Not a Spec Sheet

Solar batteries store what your panels make at noon so the house can use it at dinner and overnight, and they carry the essentials through a utility outage. HomeGrid's approach is a 48V lithium iron phosphate bank built from modules: a base of 9.6kWh, then 4.8kWh added per module up to 38.4kWh in one stack. You buy the capacity your home needs today and add modules when a heat pump, an EV or a second freezer changes the math.

This collection holds 8 HomeGrid Stack'd Series configurations, all in stock. The 2-module 9.6kWh bank starts from $5,999, the mid-range 4-module 19.2kWh from $9,899, and the full 8-module 38.4kWh stack from $17,999. Every configuration uses the same modules and the same footprint, so the choice is only how many.

How to choose the right HomeGrid capacity

• Nightly consumption. Look at a summer and a winter utility bill and divide monthly kWh by 30. A home using 20kWh a day typically draws 8 to 12kWh between sunset and sunrise. The HomeGrid 3 Stack'd 14.4kWh covers that with margin; the HomeGrid 2 Stack'd 9.6kWh suits a smaller, gas-heated home.
• Outage tolerance. If you want a full cloudy day of autonomy, double the nightly figure. That points most families at the HomeGrid 4 Stack'd 19.2kWh or the 5-module 24kWh bank.
• All-electric homes. Electric heat, water heating and an EV charger push nightly use past 20kWh. The HomeGrid 6 Stack'd 28.8kWh and the 8-module 38.4kWh top of the line are built for that profile.
• Inverter pairing. Every configuration is 48V, the standard for residential hybrid inverters. Confirm your inverter's supported battery list and its maximum charge and discharge current so the bank is never the bottleneck.
• Room to grow. Because a stack tops out at 38.4kWh, start at least two modules below the maximum if you expect to expand; otherwise you will be planning a second stack later.

Popular picks in this collection

Sizing tips

• Run the Solar Kit Calculator with your appliance list and ZIP code. It returns a battery size in kWh; round up to the next HomeGrid configuration rather than down.
• Match array to bank. A 19.2kWh battery needs roughly 5kW or more of panels to refill on a winter day; a bank that never gets full is money sitting idle.
• Check inverter charge rate. A large bank behind a small inverter charges slowly; plan the inverter and battery together, not in sequence.
• Keep it conditioned. LFP works best in a garage, basement or utility room that stays above freezing and out of direct summer heat.
• Leave floor and wall space. A stack that will grow from four to eight modules needs its final height and clearance planned on day one.
• Comparing home grid batteries on price alone hides the module math: each added 4.8kWh module here costs about $1,950 to $2,100, so a bigger stack is cheaper per kWh than a second small system.

Frequently asked questions

How much HomeGrid battery do I need for whole-home backup? Most homes without electric heat are comfortable at 14.4 to 19.2kWh. All-electric homes or those with an EV should look at 24kWh and up. The calculator gives a number for your loads and climate.

Can I add modules to a stack later? Yes, that is the point of the Stack'd design. Capacity grows in 4.8kWh steps to 38.4kWh per stack, and the modular layout makes servicing simpler than a sealed cabinet.

Do HomeGrid batteries work with my existing solar? If your system has, or will have, a 48V hybrid inverter that supports HomeGrid communication, yes. Grid-tie-only string inverters need to be replaced or supplemented with a hybrid unit.

Looking at solar batteries for sale and unsure between 19.2 and 28.8kWh? Every configuration ships free to the mainland US from brand partner warehouses, usually within a few business days, with 30-day returns, and we are happy to size it with you by phone.