Solar Savings: Look at the Entire Year

Going solar can be a great way to reduce your carbon footprint and increase your independence from the grid, but let’s be honest: the biggest draw is the promise of lower monthly power bill.

The timing of your first bill can set the tone. Turn those panels on in July? You’ll feel like you hit the jackpot. Switch them on in November? You might wonder if the savings promise was too good to be true.

Because solar production is tied to the seasons, a single monthly snapshot doesn’t tell the whole story. To see the real value of solar panels, you have to zoom out and look at the entire year.

Seasonal solar savings: changes throughout the year

It’s natural to think of savings in monthly increments — that’s how we pay most of our bills, after all. But, solar energy production is inherently tied to the available sunlight: Longer days and fewer clouds? More clean electricity generated from your roof. Shorter, cloudier days? Less electricity generation. That’s what drives the differences in seasonal solar savings.

Spring and summer: building a credit bank 

During the long days of June and July, your system is likely over-producing. In many areas, this excess electricity earns you bill credits when it’s sent back to the grid, possibly building a bank you can pull from in the fall and winter. Your monthly bill might be the bare minimum (for example, just a connection fee), or even zero.

Fall and winter: use credits to offset lower production

As the sun sits lower in the sky and winter weather moves in, production naturally dips. Meanwhile, your energy usage might actually spike if you use certain types of electric heating or spend more time indoors with the lights on. In areas where you can build a bank of credits, you can offset your bill with them through the winter. If you haven’t had a summer to build a bank of credits, your bill might be higher than expected. Seeing a higher utility bill in January can be jarring, but it doesn’t mean your panels aren’t working.

Why you need an annual view

Focusing on solar savings over a full 12-month cycle is the only way to get an accurate return on investment (ROI). Here’s why the annual perspective matters.

• Net metering balance: If your utility provider offers net metering, those credits you can bank in the summer offset the higher costs in the winter. You’re essentially using the grid as a giant battery.
• Averaging out the weather: One rainy March doesn't define your system's performance. Annual data smooths out the anomalies of an unusually cloudy month or a particularly harsh winter.
• Match performance with the design: Most solar systems are designed with annual production and offset in mind. Annual performance is the most meaningful standard to judge a solar system against.

How to calculate your true solar savings

To see the real impact on your wallet, stop looking at your monthly statement in isolation. Instead, try this.

1. Total your annual spend: Add up your electricity costs for the last 12 months.
2. Compare to pre-solar totals: Compare that number to what you paid in the year before you went solar, adjusting for any major rate hikes from your utility company and any major new electricity use at your home (like a new electric vehicle or hot tub).
3. Factor in the credits: Look at your banked credits at the end of your utility's true-up period.

The bottom line

By shifting your mindset from "What did I save this month?" to "What did I save this year?" you’ll have a much clearer — and potentially much more satisfying — understanding of your clean energy investment.

Don't let a cloudy December get you down. The sun always comes back, and over the course of a year, those rays can add up to green.

If you’re considering solar, reach out for a free quote and solar savings estimate today.

Annual solar savings frequently asked questions

Why is it important to look at annual savings?

Solar production and any associated energy bill savings can fluctuate throughout the year. Annual production and savings are a better measure of a solar system’s performance than any one month.

Do solar panels always save you money?

Some homes may be unsuitable for solar and an overpriced system may never recoup its cost or save more than its lease payment. 

Will I save money with solar panels?

How much a solar panel system can save you depends on a number of factors: how much your electricity bill is to start, how much sunlight your solar panels get, how your utility structures the rate, whether it offers net metering or net billing, and much more. Talk with a trusted solar installer to get a clear understanding of your potential to save.

Disclaimer: This content is for educational purposes only. Palmetto does not provide tax, legal, or accounting advice. Please consult your own tax, legal, and accounting advisors.