Solar vs. Utility Inflation

A 20-Year Cost Comparison for Commercial Facilities

When businesses evaluate commercial solar, most focus on the upfront cost.

That’s understandable.

But long-term energy decisions aren’t just about today’s price.

They’re about where your utility costs are headed over the next 10, 15, or 20 years.

The better question is:

What will your electricity bill look like in 2035?

Let’s break it down.

What History Tells Us About Utility Rates

According to the U.S. Energy Information Administration (EIA), average U.S. commercial electricity prices have trended upward over the past decade, with regional variations (EIA Electric Power Monthly, 2023).

While increases vary by state, long-term data shows:

Gradual upward movement nationally
Volatility driven by fuel markets and infrastructure
Rate restructuring in many states to recover grid investments

In some markets, recent increases have exceeded historical averages due to:

Grid modernization costs
Transmission expansion
Wildfire mitigation infrastructure
Fuel price fluctuations

Even modest 3–5% annual increases compound meaningfully over 20 years.

The Compounding Effect

Let’s assume a conservative 3% annual increase.

If your facility pays $200,000 per year in electricity:

Year 1: $200,000
Year 10: ~$268,000
Year 20: ~$361,000

That’s not linear growth.

That’s compound escalation.

Over 20 years, total utility spend could exceed $5.4 million under that growth pattern.

And that’s assuming only 3% annual escalation.

How Solar Changes the Equation

When you install solar, you:

Lock in a portion of your energy cost
Reduce exposure to grid rate volatility
Stabilize part of your operating expense

Solar effectively creates a long-term fixed energy price for the energy it produces.

According to NREL’s Levelized Cost of Energy (LCOE) analysis, commercial solar projects often produce energy in the $0.06–$0.08 per kWh range in many U.S. markets (NREL, 2023).

If your current grid rate is $0.15 per kWh, that difference is structural.

And once installed, solar energy cost does not escalate with fuel markets.

20-Year Comparison Scenario

Let’s model a simplified case.

Without Solar

Facility energy cost: $220,000 per year
Escalation: 3% annually

20-year total utility spend: ~$6.0+ million

With Solar (100 kW example)

Solar offsets 40% of consumption
Solar production value: ~$85,000 per year

Assume:

Solar system net cost after incentives: ~$160,000
6-year payback
Minimal O&M costs

Years 7–20:

Primarily reduced-cost energy for that portion of load.

Over 20 years:

Total avoided cost could exceed $1 million depending on rate escalation.

Exact numbers vary by load and utility, but the principle remains consistent:

Solar stabilizes a portion of your future energy expense.

Inflation Hedge Strategy

Solar functions similarly to:

Fixed-rate financing vs variable-rate
Long-term fuel contracts
Commodity hedging

Except instead of financial derivatives, you’re investing in infrastructure.

According to the International Renewable Energy Agency (IRENA), renewable energy technologies increasingly provide cost stability compared to fossil-fuel-based generation, which is subject to commodity volatility (IRENA Renewable Power Generation Costs Report).

For commercial operators, predictability matters.

CFO Perspective: Risk Management

From a financial leadership standpoint, solar does three important things:

Reduces exposure to unpredictable rate spikes
Converts variable operating cost into more predictable long-term cost
Improves planning confidence for multi-year budgeting

Energy volatility is difficult to control.

Solar gives you partial control.

The Real Comparison

The wrong way to evaluate commercial solar:

Compare installation cost to last month’s bill.

The right way:

Compare installation cost to 20 years of projected utility escalation.

When evaluated properly, solar often shifts from:

“Large capital expense”

To:

“Long-term cost stabilization strategy.”

To be considered when thinking about solar ....

Energy is rarely getting cheaper long term.

Is your current utility bill higher than it was five years ago?

Was it higher last year than the year before?

Do you know what it will cost next year? Or five years from now?

Solar doesn’t eliminate your utility bill.

But it does allow you to take control of part of it — permanently.

In an environment of fluctuating and often increasing rates, locking in cost certainty becomes a strategic advantage.

Sources

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