Summary: Find out how much plug-in solar panels can save on your electric bill each month. Realistic savings breakdowns by system size, location, and electricity rate.
Electricity rates across the United States hit an average of 18 cents per kilowatt-hour in 2026, and they are still climbing. If you have been wondering about plug-in solar savings, the short answer is that a balcony or patio solar kit can realistically save you between $15 and $75 per month depending on your system size, sunlight, and local electricity rate.
Here is how to figure out what the numbers look like for your home.
What Determines Your Plug-In Solar Savings
Four factors drive how much you will save each month.
System size. A larger system produces more electricity. Plug-in solar kits for apartments and homes typically come in 800, 1,200, 1,600, and 2,000-watt configurations.
Sunlight hours. The number of peak sun hours your panels receive each day varies by location and season. Most of the U.S. averages between four and six peak sun hours daily.
Electricity rate. The more you pay per kilowatt-hour, the more valuable each unit of solar energy becomes. Rates range from around 11 cents in states like North Dakota to over 33 cents in California and Hawaii.
Consumption patterns. A smart power meter system offsets electricity in real time, so your savings are highest when your daytime usage aligns with your solar production.
Monthly Savings by System Size
Here is what each system size can realistically produce and save, assuming five peak sun hours per day and the national average electricity rate of 18 cents per kWh.
| System Size | Daily Production | Monthly Production | Monthly Savings (at $0.18/kWh) |
|---|---|---|---|
| 800W | 4 kWh | 120 kWh | $21 |
| 1,200W | 6 kWh | 180 kWh | $32 |
| 1,600W | 8 kWh | 240 kWh | $43 |
| 2,000W | 10 kWh | 300 kWh | $54 |
If you live in a higher-rate state, those numbers go up significantly. In California at 34 cents per kWh, a 1,200-watt system saves roughly $61 per month. In Massachusetts at 31 cents, the same system saves about $56. In Texas at 16 cents, it saves closer to $29.
A Simple Way to Estimate Your Savings
Take your monthly electric bill and find your rate per kilowatt-hour. Then multiply your system's monthly production by that rate.
If you spend $150 per month and pay 18 cents per kWh, you are using about 833 kWh. A 1,200-watt system producing 180 kWh per month would offset roughly 22 percent of that usage, saving you around $32 each month.
If your bill is $200 and your rate is 25 cents per kWh, the same 1,200-watt system saves you $45 per month.
The higher your rate and the larger your system, the faster the savings add up.
What Plug-In Solar Will Not Do
Honesty matters here. A plug-in solar kit is not going to eliminate your electric bill entirely. These systems are designed to offset a meaningful portion of your daytime electricity use, not replace your full utility connection.
You will still pay for electricity used at night, during cloudy stretches, and for high-draw appliances like central air conditioning and electric dryers. Adding a battery to your system can extend your savings into the evening, but even then, most renters should expect to reduce their bill rather than zero it out.
The value is cumulative. Saving $30 to $50 per month adds up to $360 to $600 per year — and electricity rates are not getting cheaper.
How Balcony Solar Savings Compare Over Time
A 1,200-watt plug-in solar kit saving $32 per month at the national average rate adds up to $384 in the first year. Over five years, that is $1,920 in savings, and likely more as rates continue to rise. Over the typical 25-year lifespan of quality solar panels, the total savings can reach $10,000 or more.
That math gets even better in high-rate states. A renter in California saving $61 per month accumulates over $3,600 in savings within five years.
Start With What Makes Sense
You do not need to buy the biggest system available. Start with a size that fits your budget and your space. An 800-watt kit is an affordable entry point that delivers real, measurable savings from day one. If the numbers work, expand later — the modular systems available at AfterGridSupply.com let you add panels and capacity over time without replacing what you already own.
Visit AfterGridSupply.com to explore plug-in solar kits in 800, 1,200, 1,600, and 2,000-watt sizes. If you want help estimating your specific savings, reach out to us at andy@aftergridsupply.com.