Real cost data for every major commercial energy project — state-by-state breakdowns with current incentives factored in.
Average installed costs, incentives, and payback periods for commercial solar across all 50 states.
Commercial HVAC replacement and upgrade costs broken down by system type and state.
What commercial energy audits cost in each state — from ASHRAE Level I to Level III.
BAS installation and retrofit costs for commercial buildings in every US state.
Insulation, window, and roofing upgrade costs per square foot by state and climate zone.
Commercial battery storage system costs, available incentives, and payback by state.
Demand response program payments and curtailment rates available in each ISO/RTO region.
Level 2 and DCFC installation costs, permit timelines, and available rebates by state.
Commercial LED lighting retrofit costs, utility rebates, and payback periods in every state.
Building retro-commissioning costs and average energy savings by project type and state.
Get a custom cost estimate for your building based on size, location, and project type.
When does it make sense to add storage? Cost comparison and decision framework.
Which investment delivers better ROI? Side-by-side cost and payback analysis.
Compare financing costs, terms, and off-balance-sheet treatment for energy projects.
Getting accurate cost estimates for commercial energy projects is notoriously difficult. Equipment costs, labor rates, incentive availability, and utility interconnection fees vary dramatically by state and market. A commercial solar installation in New York averages $2.20–$2.80/watt installed; the same system in Arizona runs $1.75–$2.30/watt. A 1,000-ton commercial HVAC replacement in Boston costs significantly more than the same project in Phoenix — both because of labor market conditions and heating load requirements.
These guides give you realistic market-rate ranges so you can sanity-check vendor quotes, build capital budget models, and prioritize which projects deserve detailed engineering proposals. Each guide includes gross cost ranges, available incentives that reduce net cost, and a simple payback calculator for the median project size in each state.
For a precise budget tailored to your specific building, use the interactive cost estimator, or run the free energy audit to get a ranked list of improvements ordered by simple payback.
| Project Type | Typical Cost Range | Simple Payback |
|---|---|---|
| LED Lighting Retrofit | $1.50–$4.00 per sq ft | 1.5–3.5 years |
| Commercial HVAC Replacement | $15–$35 per sq ft | 4–8 years |
| Commercial Solar | $1.75–$2.80 per watt | 3–7 years (after ITC) |
| Battery Storage System | $400–$650 per kWh installed | 5–10 years |
| Building Automation System | $2.50–$7.00 per sq ft | 3–6 years |
| Energy Audit (ASHRAE Level II) | $0.10–$0.30 per sq ft | N/A (immediate ROI via savings identified) |
Three factors drive most of the state-to-state variation: utility rate levels (electricity is 50–75% cheaper in the Southeast than California or Massachusetts), state incentive availability (solar investment tax credit adders, PACE financing availability), and labor market conditions (installation labor in metro areas is 20–35% higher than rural markets). Climate zone also affects HVAC sizing requirements significantly — a heat pump system in Boston needs to handle -10°F design days, while a Miami installation requires larger cooling capacity.
Each cost guide provides both gross costs (before incentives) and net costs (after federal ITC, state incentives, and utility rebates). Federal programs covered include the Section 48E Investment Tax Credit for solar and storage, Section 179D commercial energy efficiency deduction, and IRA direct pay options for tax-exempt entities. State-specific programs vary widely — use the AI Incentive Finder to see exactly what's available at your building address.
Cost ranges reflect 2025–2026 market data aggregated from commercial installer quotes and DOE cost databases. Ranges represent the 25th to 75th percentile of installed costs for commercial projects in each state — meaning 50% of actual projects fall within these bands. For a precise budget number, use the interactive cost estimator which factors in your building size, location, utility rate, and project scope.
LED lighting retrofits consistently deliver the fastest payback — typically 1.5 to 3.5 years, depending on existing fixture types and utility rates. Demand response enrollment (where available) can deliver positive cash flow in the first month with no capital investment. Commercial HVAC upgrades average 4–8 year simple payback. Solar paybacks range from 5–12 years before incentives, shrinking to 3–7 years with the ITC and bonus depreciation. See the full solar vs. battery storage comparison for a deeper payback analysis.
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