Want to know how to lower your electric bill without solar? Start with your home. A high bill does not automatically mean you need solar panels. Sometimes solar is the right answer. Often, the first fix is much smaller and cheaper.
It might be a new air filter, a thermostat change or sealing air leaks. It might be more attic insulation, leaky ducts or a better utility rate plan. It might be charging your electric vehicle (EV) at a different time, or fixing an AC that works too hard. And sometimes it's a mix of several of these. Before you spend money to make more electricity, find out whether your home is wasting the electricity it already uses. Here are 10 places to start.
1. Look at Your kWh Before the Dollar Amount
Your electric bill tells you two different things: how much electricity costs and how much your home used. Usage is shown in kWh (kilowatt-hours), the unit on your bill. Price and usage are different problems with different fixes.
Here's a hypothetical example:
- July last year: 1,000 kWh and $170
- July this year: 1,500 kWh and $255
The bill went up 50%, but so did usage. So before you blame your utility's rate, ask why the house used 500 more kWh. Look for changes in:
- How long your heating and cooling ran
- The weather
- New appliances, a pool or EV charging
- More people living in the home
- Water heating
This tells you whether your main problem is price or usage.
2. Maintain Your Heating and Cooling System
Heating and cooling are often the biggest energy users in a home. ENERGY STAR estimates that nearly half of the energy in a typical home goes to heating and cooling. That makes your HVAC system (heating, ventilation and air conditioning) one of the first places to check.
Start with the basics:
- Replace dirty air filters.
- Keep the outdoor unit's coils clean.
- Keep supply and return vents clear.
- Have a technician check refrigerant levels and how well the system performs.
- Inspect the ductwork.
- Schedule regular professional maintenance.
ENERGY STAR recommends checking your filter every month during heavy use. Change it when it's dirty, and at least every three months. A dirty filter blocks airflow and makes the system work harder.
Watch for a bigger warning sign. Maybe your AC used to hold 74°F easily. Now it runs nonstop, struggles in the afternoon, leaves some rooms warmer than others, or your summer kWh climbs every year. That may be more than a maintenance problem. An aging or poorly working system can use far more electricity than it should. Before you add solar panels to power an inefficient AC, find out whether the AC should be fixed first.
3. Use Your Thermostat Smartly
You don't have to be uncomfortable to save money. But your thermostat settings matter. The U.S. Department of Energy says you can save as much as 10% a year on heating and cooling. The way to do it is to turn your thermostat back 7–10°F for about eight hours a day.
A programmable or smart thermostat can do this for you:
- Summer: cool normally while you're home, and let the house get warmer while it's empty. If you're on a time-of-use plan (where the price depends on the time of day), cool the house a little before the expensive peak hours.
- Winter: lower the temperature while you sleep or when you're away.
One caution for heat pumps: big temperature setbacks can sometimes switch on costly backup electric heat while the house warms back up. If you have a heat pump, set your schedule for that equipment instead of copying advice meant for a furnace.
4. Seal Air Leaks
You may be paying to heat or cool air that escapes right out of the house. Common leak spots include:
- Exterior doors and windows
- Openings into the attic
- Gaps around pipes and electrical wires
- Recessed lights
- Rim joists (where the house framing sits on the foundation)
- Ductwork
Fixes can be cheap: caulk, weatherstripping, spray foam and sealing attic openings. The Department of Energy calls caulking and weatherstripping simple, effective steps that often pay for themselves in about a year or less.
Sealing air leaks and adding insulation in key areas pays off. ENERGY STAR estimates homeowners save an average of about 15% on heating and cooling costs. That works out to about 11% of total energy costs. That can be a much better first step than buying extra solar panels to make up for a leaky house.
5. Check Your Insulation
Insulation and air sealing work together, but they do different jobs. Think of insulation as a sweater and air sealing as a windbreaker. Insulation slows heat moving through walls and ceilings. Air sealing stops drafts.
Places worth checking include the attic, crawl space, basement, rim joists, exterior walls and walls next to the garage. ENERGY STAR says sealing and insulating are among the most cost-effective ways to make a home more comfortable and efficient.
A simple test: does your house heat up fast after the AC shuts off? Are upstairs rooms much hotter? Are floors cold in winter? Are some rooms much warmer or cooler than others? If so, the home's shell deserves a closer look. A well-insulated home also helps later. It can get by with smaller heating and cooling equipment, and it makes time-of-use plans, solar and batteries work better.
6. Inspect Your Ductwork
You can have an efficient air conditioner connected to leaky ducts. Ducts that run through attics, crawl spaces or garages can lose cooled or heated air before it reaches your rooms.
Signs of duct problems include:
- One room that's always too hot or too cold
- Weak airflow from vents
- Heating and cooling that runs a long time
- Dust around the vents
- Big temperature differences around the house
If cooled air is leaking into the attic, you're paying to air-condition the attic. Sealing and insulating ducts can sometimes save more for the money than replacing the whole system.
7. Change When You Use Electricity
This one can cost nothing. Many utilities now offer time-of-use, peak, hourly, EV or demand-based pricing. On these plans, a kWh used at 2 a.m. can cost much less than the same kWh at 6 p.m. On some plans, peak power costs two or three times as much as off-peak power, and sometimes more.
Things you can often shift to cheaper hours include:
- EV charging
- The dishwasher and laundry
- A pool pump
- An electric water heater
- Home battery charging
Hypothetical example: say your EV uses 30 kWh per charge. If power costs 10¢ per kWh overnight and 30¢ during peak hours, charging overnight saves $6 per charge. At three charges a week, that's about $936 a year. You don't drive any less, and you don't buy solar. Before you buy an energy system, make sure you're buying electricity at the right time of day.
8. Cut the Quiet Appliance Loads
Not every energy problem is obvious. Sometimes a house just has a lot of equipment quietly running. Look at:
- A second refrigerator or an old garage freezer
- Dehumidifiers and space heaters
- Pool pumps and hot tubs
- Hot-water recirculation pumps
- Gaming computers, home servers and entertainment systems
- Electronics that are always on
One old fridge may not matter much. But a garage fridge, a chest freezer, a pool pump, a hot tub and a dehumidifier all running at once add up. Start with one easy question: what in this house runs 24 hours a day? Even a small load adds up over the 8,760 hours in a year.
9. Look at Water Heating and Laundry
Water heating is another large energy user. You can often trim it without new equipment:
- Lower a water heater that's set too high. The Department of Energy recommends about 120°F for most homes.
- Fix dripping hot-water faucets.
- Wash clothes in cold water and run full loads.
- Take shorter showers.
- If you have an electric water heater and a time-of-use plan, heat water outside peak hours.
Clothes dryers use a lot of energy too. Use the washer's high-speed spin, clean the lint filter, avoid over-drying and dry loads back to back while the dryer is still warm. None of these alone will fix a $400 bill. Together, they add up.
10. Make the Home Efficient Before You Power It With Solar
This is the big idea behind everything above. Before you decide you need solar to produce 18,000 kWh a year, ask whether your home should really need 18,000 kWh.
Hypothetical example: a home uses 18,000 kWh a year. It then gets HVAC maintenance, air sealing, attic insulation, duct repair, better thermostat settings and smarter appliance timing. Its use drops to 14,500 kWh a year. That's 3,500 kWh a year you no longer need to buy from the utility, make with solar or store in a battery. It changes the math on every major home energy project.
Bonus: Get a Home Energy Assessment
If you don't know where to start, a home energy assessment can point to the biggest problems first. What's included depends on your utility and state. It may include an energy audit and a blower-door test, which measures air leaks. It may also include infrared imaging, HVAC and duct testing, an insulation check, rebates or weatherization help. Some utilities pay for much of the cost. Before you hire someone privately, check what your utility already offers.
What Should You Fix First?
Use this simple guide:
- Usage jumped suddenly: check heating and cooling and your appliances first.
- One room is always uncomfortable: check ducts, insulation and air sealing.
- Usage is steady but the bill went up: check your utility rates and rate plan.
- You own an EV: look for overnight or EV pricing.
- Summer usage is very high: check AC performance, attic insulation and duct leaks.
- Winter usage spikes: check heat pump backup heat, electric resistance heat and air leaks.
- The home is already efficient: it may be time to look at solar.
When Does Solar Make Sense?
Solar is much more appealing when the home has:
- Reasonably efficient heating and cooling
- Good insulation
- Steady yearly electricity use
- A suitable roof that gets good sun
- Utility rates and solar credits that make the numbers work
At that point, solar isn't covering up wasted electricity. It's replacing electricity the home actually needs. That difference matters.
Solar Can Still Be the Right Answer
The point of this guide isn't “Don’t buy solar.” It’s “Don’t buy solar until you understand the problem.” After a careful review, the answer for one home may be to fix the HVAC first. For another, it's insulation or a different rate plan. For some homes, solar makes complete sense.
The right recommendation fits your home, not whatever product a salesperson happens to be selling.
The Ashborn Approach
Ashborn Partners looks at the home before recommending any equipment. An Advisor reviews your utility bill, your kWh history, your rate plan and how much you use during peak hours. They also look at your heating and cooling, ductwork, insulation, air leaks, appliances and EV charging, plus whether solar or a battery could fit. Then we ask one question: what is the least expensive way to solve the real problem? Sometimes that's solar. Sometimes it isn't. Ashborn connects you with participating providers serving your area for whatever makes sense.
Start with the home, not the product.
Energy savings vary by climate, utility rate, home construction, equipment and household habits. Savings estimates from the U.S. Department of Energy and ENERGY STAR are general averages, not guarantees for any one home. Examples are hypothetical. Utility programs and rebates vary by location; verify them before starting a project.