A homeowner says a rooftop solar array, a battery, and a single mini-split heat pump have turned a once-routine power bill into a break-even month — and sometimes even a profit.
The post offers a striking example of how targeted home electrification can slash cooling costs without sacrificing comfort.
Here's what to know
About a year after going solar, the Reddit user said their electricity costs averaged around $100 per month. They said that changed after they installed a 1.5-ton mini-split in the master bedroom.
According to the post, the unit is set to 70 during the day and 65 overnight, and leaving the door open lets enough cool air spread through the house that central AC is not needed.
"The mini split is efficient enough, it can run off the battery all night, and still have a charge in the morning," the homeowner wrote.
Going solar is one of the best ways to save money on home energy, especially when it's paired with efficient appliances such as mini-splits. Homeowners who want to see what a system might cost can try EnergySage to get free solar installation estimates and compare quotes.
"Beautiful energy graph and it's awesome to see the battery power your home throughout the entire night," one commenter wrote.
The homeowner said the house usually either breaks even with the grid or exports more electricity than it uses.
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More background
Mini-splits move heat instead of generating it, which can make them far more efficient than older cooling systems. For a household with a history of roughly $100 monthly electric bills, eliminating that cost could amount to around $1,200 in yearly savings before upfront equipment costs.
"Reality of most older homes across US is they are so leaky, just minimal upgrades to the thermal envelope can pay back way more than all the high tech money can buy," the original poster wrote.
Elsewhere in the thread, the homeowner said they believe the setup uses a single 10-kilowatt-hour battery. They also said a pool pump runs for eight hours a day during peak solar output.
What can be done?
For homeowners inspired by this kind of setup, EnergySage offers free tools to curate competitive bids from local installers without collecting your contact information unless you choose to pursue it. With EnergySage's help, the average person can save up to $10,000 on solar purchases and installations. That's a meaningful advantage when you're weighing upfront costs against years of lower utility bills.
More From EnergySage
💡Go deep on the latest news and trends shaping the residential solar landscape
Tools such as EnergySage's solar map show the average cost of a home solar panel system by state, along with details on solar panel incentives for each state. Together, these resources can help homeowners get the best price for rooftop solar panels and access available incentives.
Adding battery storage to a solar setup is also one of the best ways to protect your home during outages, save money on energy, and go off-grid. Homeowners can explore EnergySage for information about home battery storage options, including competitive installation estimates.
Where can I learn more?
Homeowners considering solar, battery storage, and efficient cooling can see how similar setups are working in these stories.
• In Massachusetts, mini-splits and net metering should leave one homeowner 4,100 kilowatt-hours ahead.
• In Australia, a 20kW solar setup made blackouts invisible and produced a $545 credit.
• During 90-degree heat, rooftop solar powered whole-house AC and two EVs with energy left over.
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