Stop Comparing Solar to Today's Bill — Compare the Future

Every week we hear the same line from homeowners who just got a solar quote: "The payback is okay, but it's not blowing me away compared to what I'm paying now."

That sentence contains the single most common mistake in residential solar math. You're not buying solar to replace today's electric bill. You're buying it to replace the next 25 years of electric bills — and those future bills look nothing like your current one.

Let's walk through why this framing matters, what the real numbers say, and how to run the math the way professional energy analysts actually run it.

The Mental Model Problem

When a homeowner gets a $22,000 quote for an 8 kW system, the instinctive comparison is: "My bill is $180 a month. What would this save me next month?" That question produces a disappointing answer, because month-one savings aren't where solar's value lives.

A better question: "What will my bill look like in 2030? In 2040? And what will I wish I had done in 2026?"

This isn't speculation. We have decades of data on how utility rates behave, and the trend has been remarkably consistent.

What Utility Rates Have Actually Done

According to the U.S. Energy Information Administration (EIA), the average residential electricity price in the United States rose from 11.88 cents per kWh in 2014 to roughly 16.5 cents per kWh in 2024 — a cumulative increase of about 39% over ten years, or roughly 3.4% annually [EIA Electric Power Monthly].

That's the national average. In many markets, the picture is far more dramatic:

• California: PG&E residential rates rose from roughly 19 cents/kWh in 2020 to more than 40 cents/kWh for peak tiers in 2025 — more than doubling in five years, driven by wildfire mitigation costs, grid hardening, and transmission upgrades [CPUC filings].
• New England: Eversource, National Grid, and Unitil customers saw supply rate increases of 40–60% over the 2022–2024 period as natural gas volatility flowed through to retail bills.
• Hawaii: Residential rates have sat above 40 cents/kWh for years, with little relief expected.

Lawrence Berkeley National Laboratory's Tracking the Sun report notes that these rate pressures — rather than solar pricing itself — have become the dominant driver of residential solar economics since 2022 [LBNL Tracking the Sun].

Why Future Rates Will Keep Climbing

There are structural reasons to expect continued rate increases through at least the 2030s:

1. Grid Infrastructure Investment

The U.S. transmission and distribution grid was largely built between 1950 and 1980, and a significant portion is now past its design life. The Department of Energy estimates that more than $2 trillion in grid investment will be needed through 2050 to accommodate electrification and reliability standards [DOE National Transmission Needs Study]. That cost flows to ratepayers.

2. Electrification Demand Growth

After two decades of flat demand, U.S. electricity consumption is climbing again — driven by data centers, EV adoption, and heat pump installations. EIA projects total residential electricity consumption will grow roughly 14% between 2023 and 2035 [EIA Annual Energy Outlook]. More demand on aging infrastructure means higher rates.

3. Extreme Weather and Resilience Costs

From wildfire hardening in the West to hurricane response in the Southeast to winter storm reliability in Texas, utilities are absorbing billions in climate-related capital expenses — all of which end up in the rate base.

4. Natural Gas Price Volatility

Roughly 43% of U.S. electricity generation came from natural gas in 2024 [EIA]. Gas prices are volatile, and in markets with supply-based retail rates, that volatility is passed directly to homeowners.

Running the Math the Right Way

Here's what a proper solar comparison looks like. Let's use a homeowner paying $200/month, or $2,400/year, in a state where rates are rising 4% annually.

The "today" comparison (wrong): A $20,000 net solar system saving $2,400/year has an 8.3-year payback. "Not amazing."

The "future" comparison (right): Over 25 years, at 4% annual rate inflation, that $2,400 bill becomes:

• Year 5: $2,920/year
• Year 10: $3,552/year
• Year 15: $4,323/year
• Year 20: $5,259/year
• Year 25: $6,399/year

Cumulative 25-year bill without solar: approximately $99,900.

With a solar system producing roughly the same kWh each year (modern panels degrade about 0.5%/year per NREL data), you're locking in today's cost against tomorrow's prices [NREL Solar Cost Analysis].

The real question isn't "does this beat my current bill?" It's "does spending $20,000 today beat spending $99,900 over the next 25 years?"

The 2026 Incentive Reality

A quick, important clarification: the federal 30% residential Investment Tax Credit (Section 25D) for purchased residential solar systems expired at the end of 2025. For systems purchased in 2026 and beyond, the federal credit is no longer available to homeowners who own their systems outright.

However, the Section 48E commercial clean energy credit is still available to third-party owners — meaning solar leases and Power Purchase Agreements (PPAs) can still benefit, with the savings typically passed through as lower monthly payments. That makes the lease/PPA math more competitive than it was in prior years [SEIA Solar ITC].

State and local incentives also remain robust in most markets — SMART payments in Massachusetts, NY-Sun rebates in New York, SREC markets in New Jersey and Illinois, and SGIP battery incentives in California. Use the EnergyScout incentive finder to see exactly what applies in your zip code.

The Hedge Value Nobody Talks About

Financial analysts would describe a residential solar system as a long-duration utility hedge. Like fixing your mortgage rate, solar fixes a large portion of your energy cost curve — with zero exposure to future rate hikes on the kWh your panels produce.

A 2023 analysis from EnergySage found that the median residential solar customer will save between $20,000 and $96,000 over 25 years depending on state, system size, and local utility rates [EnergySage Savings Data]. The variance is almost entirely explained by what rates do in your service territory.

If your utility raises rates 2% a year, your savings are at the low end of that range. If they raise rates 6% a year — like several Northeast and West Coast utilities did between 2022 and 2024 — savings land at the high end.

How to Actually Run Your Own Numbers

Three steps to make the future-bill comparison properly:

1. Pull 12 months of electric bills. Find your annual kWh use and your effective rate (total $ / total kWh). That's your real starting point.
2. Research your utility's rate history. Most state public utility commissions publish historical rate case approvals. A quick look at the last 10 years will tell you your utility's trajectory. California, Hawaii, and New England utilities have been aggressive; some Midwestern and Southern utilities have been more moderate.
3. Project three scenarios. Run your 25-year bill at 2%, 4%, and 6% annual escalation. That gives you a range. Compare the range to any solar quote you're evaluating.

The EnergyScout assessment tool does this automatically using your zip code, local rate history, and utility-specific projections.

What About Moving?

A common objection: "I might not stay in this house for 25 years." That's fair — and the answer is that solar increases home value. A 2019 Zillow analysis found that homes with owned solar systems sold for approximately 4.1% more than comparable homes without [Zillow Solar Research]. NREL research has similarly found that each installed kilowatt of solar adds roughly $4,000–$6,000 to resale value in established solar markets.

The hedge doesn't evaporate when you sell — it gets capitalized into the home price.

The Bottom Line

Your solar quote isn't trying to beat today's bill. It's trying to beat 25 years of a bill that's been growing faster than inflation for a decade, with every structural reason to keep growing.

Compare the two futures honestly. Then decide.

Next Step

Ready to run the real numbers for your home — not the flat "today's bill" math, but the 25-year projection with your local utility's actual rate trajectory?

Start with the free EnergyScout assessment to see a personalized projection based on your zip code. Then compare vetted installers in the EnergyScout provider directory and check your available incentives at our incentive finder. The right comparison makes the decision obvious.