Natural Gas Cost Benchmarking: How Does Your Business Compare to Industry Peers

Do you know how your natural gas costs stack up against comparable businesses in your industry? Most business owners don't — and that lack of visibility is exactly what keeps them overpaying for years without realizing it. Natural gas cost benchmarking changes that dynamic by giving you an objective, data-driven view of where you stand and what's possible.

If your competitors are paying 20% less per therm for the same commodity, that's a real competitive disadvantage. If your energy intensity (therms per square foot or per unit of output) is significantly higher than industry averages, that's a target for efficiency improvement. Benchmarking reveals both.

This guide explains what natural gas cost benchmarking is, provides average rate data by industry, identifies the hidden factors driving costs above peer levels, and gives you actionable strategies to close the gap.

What Is Natural Gas Cost Benchmarking and Why Every Illinois Business Needs It

Definition and Purpose

Natural gas cost benchmarking is the practice of comparing your organization's natural gas costs — both on a per-therm basis and on a consumption-intensity basis — against industry peers and applicable market standards. The goal is to identify whether your costs are in line with comparable businesses and, if not, to diagnose why and how to improve.

Effective benchmarking has three dimensions:

1. Supply Rate Benchmarking: How does your per-therm supply rate compare to the current competitive market rate and to what comparable businesses in your region are paying?

2. Consumption Intensity Benchmarking: How does your natural gas usage per square foot, per revenue dollar, or per unit of production compare to industry averages?

3. Contract Terms Benchmarking: Are your contract structure, term length, and provisions consistent with what well-managed businesses in your industry maintain?

Why Illinois Businesses Specifically Need This

Illinois businesses operate in a complex energy market with multiple LDCs, a competitive supply market governed by the Natural Gas Customer Choice Program, and rate structures that vary significantly by customer class. Without benchmarks, there's no way to know whether you're optimizing within this market — or leaving money on the table.

According to the U.S. Energy Information Administration's Commercial Buildings Energy Consumption Survey (CBECS), energy cost disparities between well-managed and poorly managed commercial buildings of the same type frequently exceed 30% — entirely due to procurement and efficiency differences rather than operational variance.

Average Natural Gas Rates by Industry: See Where Your Business Stands Right Now

The following benchmarks are drawn from EIA commercial energy consumption data, industry association surveys, and market observations from commercial procurement activity in Illinois and Midwest markets (2025–2026 data).

Manufacturing

Typical consumption: 200,000–5,000,000+ therms/year (varies enormously by sub-sector and process)

Average Illinois commercial/industrial supply rate: $0.35–$0.55/therm (all-in, including basis)

Well-managed manufacturers: $0.33–$0.42/therm through aggregated, competitively bid contracts

Gas intensity benchmark: Varies widely by process; the U.S. Department of Energy's Industrial Technologies Program provides sub-sector benchmarks

Key cost drivers: Process heating loads, boiler efficiency, demand charges for large accounts, seasonal load profiles

Healthcare (Hospitals, Clinics, Long-Term Care)

Typical consumption: 50,000–500,000 therms/year

Average Illinois commercial supply rate: $0.38–$0.52/therm

Well-managed healthcare: $0.36–$0.45/therm

Gas intensity benchmark: ~12–18 therms/bed/month for inpatient facilities; ~25,000–50,000 therms/year for mid-size ambulatory surgery centers

Key cost drivers: 24/7 heating and hot water loads, sterilization requirements, regulatory reliability standards

Restaurants and Food Service

Typical consumption: 8,000–80,000 therms/year per location

Average Illinois commercial supply rate: $0.40–$0.55/therm

Well-managed restaurants: $0.37–$0.46/therm

Gas intensity benchmark: ~15–25 therms per seat per month for full-service restaurants; lower for fast-casual operations

Key cost drivers: High-BTU cooking equipment, commercial dishwashers, space heating, variable operating hours

Office Buildings and Corporate Real Estate

Typical consumption: 10,000–150,000 therms/year

Average Illinois commercial supply rate: $0.39–$0.52/therm

Well-managed office: $0.36–$0.44/therm

Gas intensity benchmark: ~1.5–4 therms/square foot/year for Northern Illinois office (higher with older building envelope)

Key cost drivers: Heating degree days, building envelope quality, HVAC system efficiency, occupancy density

Hospitality (Hotels, Extended Stay)

Typical consumption: 30,000–200,000 therms/year per property

Average Illinois supply rate: $0.38–$0.52/therm

Well-managed hospitality: $0.36–$0.46/therm

Gas intensity benchmark: ~5–12 therms/room/month for full-service hotels in the Midwest

Key cost drivers: Pool heating (if applicable), laundry operations, food and beverage operations, occupancy variability

Educational Institutions

Typical consumption: 50,000–1,000,000 therms/year

Average Illinois supply rate: $0.38–$0.50/therm

Well-managed schools/universities: $0.35–$0.44/therm

Gas intensity benchmark: ~2–5 therms/square foot/year for K-12 facilities; varies for colleges based on residential component

Key cost drivers: Seasonal heating loads, laboratory and kitchen operations, summer break usage reduction

Multi-Tenant Commercial Real Estate (Landlord-Metered)

Typical consumption: Varies by property; benchmark on per-square-foot basis

Average Illinois supply rate: $0.39–$0.52/therm

Well-managed multi-tenant: $0.36–$0.44/therm

Gas intensity benchmark: 1–3 therms/square foot/year for common area and central plant

Key cost drivers: Tenant mix and operating hours, central plant efficiency, submetering and allocation accuracy

Hidden Factors Driving Your Natural Gas Costs Higher Than Your Competitors

If your benchmarking exercise reveals costs above peer levels, the following factors are the most common culprits.

1. Utility Default Supply in a Deregulated Market

The single most common hidden cost driver: you're simply on utility default supply in a deregulated market and haven't engaged a competitive supplier. In Illinois, utility default GCA rates are often 10–25% above competitive fixed rates during moderate-price environments.

This is the easiest problem to fix — and typically the highest-impact.

2. Rate Class Misclassification

If your account is classified under a residential or small commercial rate when your actual usage qualifies for a large commercial or general service rate, you may be paying a higher per-therm delivery rate than your consumption level warrants.

Rate class audits by LDC tariff experts occasionally discover businesses with years of misclassification — representing retroactive savings opportunities where the LDC may owe refunds.

3. Contract Auto-Renewals at Unfavorable Rates

A contract that auto-renewed in January or February (peak winter market) rather than in spring carries a systematically higher rate than one locked in during shoulder months. If your last renewal happened at market peak, you may be paying a timing premium of $0.05–$0.15/therm.

4. Below-Average Energy Efficiency

Even with identical supply rates, a business with inefficient equipment pays more per unit of output or per square foot. Common efficiency gaps:

Aging boilers operating at 60–70% efficiency vs. modern condensing boilers at 90%+
Lack of night setbacks and smart thermostats
Poor building envelope leading to excessive heat loss
Oversized heating systems with poor part-load efficiency

5. Above-Average Demand Charges

For large commercial and industrial accounts with demand-based tariff components, peak demand events can drive disproportionate monthly charges. Operational changes that reduce peak gas demand (load shifting, storage, burner management systems) can reduce these charges.

6. Unoptimized Multi-Location Procurement

Organizations with multiple locations that manage each location independently miss aggregation discounts and administrative scale benefits. A business with 15 locations paying slightly above market rates at each is leaving proportionally more money on the table than a single-location business in the same situation.

Proven Strategies to Lower Your Business Natural Gas Costs and Gain a Competitive Edge

With benchmarking data showing where you stand and the hidden factors diagnosed, here are the proven strategies to close the gap.

Strategy 1: Competitive Supplier Enrollment (Highest-Impact)

For businesses on utility default supply, switching to a competitively bid fixed-rate contract is the fastest and highest-impact cost reduction available. The process takes 30–60 days, costs nothing, and typically produces immediate savings.

Work with an energy broker to obtain 5+ competitive quotes from licensed Illinois suppliers and execute the transition to the best-priced option.

Strategy 2: Aggregated Procurement for Multi-Location Businesses

Combine your locations into a single competitive bid to leverage aggregation discounts. Even if some locations are already on competitive supply, consolidating at renewal to a coordinated bid event typically yields better rates than location-by-location negotiation.

Strategy 3: Market Timing for Contract Execution

Don't let contracts expire in November–February (winter peak pricing). Work backward from contract expirations to ensure renewal bids are issued in March–September when competitive market rates are most favorable.

Strategy 4: Energy Efficiency Investment

Prioritize efficiency upgrades with strong payback profiles:

High-efficiency boiler replacement (4–6 year payback typical in Illinois commercial settings)
Building automation system upgrades (3–5 year payback)
Insulation and building envelope improvements (varies by project)
Smart thermostats and setback programming (1–2 year payback)

Natural Gas Advisors' benchmarking resources provide industry-specific efficiency guidance.

Strategy 5: Tariff and Rate Class Review

Request a formal tariff analysis from your LDC or engage an energy consultant to review your rate class, contract options (firm vs. interruptible), and applicable incentive programs. Savings from tariff optimization can be as material as competitive supply savings for large accounts.

Frequently Asked Questions

Q: What is natural gas cost benchmarking? A: Benchmarking is the process of comparing your natural gas supply rates and consumption intensity against industry averages and competitive market data to identify cost reduction opportunities.

Q: How do I find out my current natural gas rate? A: Divide your monthly supply/commodity charges by your monthly therm consumption. Your utility bill shows both figures; your effective rate is the quotient.

Q: What is a good natural gas rate for a commercial business in Illinois? A: In 2025–2026 market conditions, competitive Illinois commercial fixed rates have ranged from approximately $0.35–$0.50/therm all-in, depending on volume, term, and LDC territory. Contact Natural Gas Advisors for a current market quote.

Q: Can a business sue for a refund if its rate class was wrong? A: You can file a formal complaint with the ICC or request a retroactive rate reclassification from your LDC. Outcomes depend on the specific circumstances; consult legal counsel for significant claims.

Q: How does my industry's natural gas cost intensity compare to what's achievable? A: Industry benchmarks from EIA's CBECS, DOE's Building Performance Database, and industry associations provide consumption intensity targets. Contact Natural Gas Advisors for help interpreting these benchmarks for your specific situation.

Q: How long does it take to achieve benchmarked natural gas costs? A: For supply rate optimization, 30–60 days from initiating a competitive bid. For efficiency-driven consumption reduction, timelines depend on project scope — typically 1–5 years for major improvements.

Conclusion

Natural gas cost benchmarking is the foundation of effective energy management. It replaces vague intuition about your costs with data-driven clarity — showing you exactly where you stand relative to peers and exactly what opportunities exist to improve your position.

For Illinois businesses, the competitive natural gas market means there's almost always a path to better supply rates than what you're currently paying. Combined with operational efficiency improvements, a benchmarked organization can achieve and maintain a meaningful cost advantage over competitors who treat energy as a passive expense.

Natural Gas Advisors provides commercial natural gas benchmarking, competitive procurement, and ongoing market monitoring services to businesses across 15 states. Our licensed brokers will compare your current rates against today's competitive market and present concrete options for improvement — at no cost to you.

Find out where your business stands against industry benchmarks. Contact Natural Gas Advisors at 833-264-7776 or request your free benchmarking analysis.

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