For most commercial buildings with usable roof or land and a meaningful electricity bill, solar is no longer a question of whether the economics work — it’s a question of how to structure them. The right answer turns a recurring cost into a recurring saving, and a saving into asset value.
What commercial solar costs in 2026
System cost scales with size and is quoted per watt, but the number that matters is net cost after incentives and the savings it unlocks. Roof condition, interconnection, and the rate structure you’re offsetting move the figure more than the panel price. We model the all-in net cost for your specific site rather than a per-watt average.
ROI & payback
With the federal Investment Tax Credit, accelerated depreciation, and avoided demand charges stacked together, commercial payback commonly lands in a few years — after which the savings are margin. Our ROI & NOI calculator models the full picture, including the asset-value lift.
PPA vs lease vs ownership
Ownership captures the most lifetime value if you have tax appetite and capital. A power purchase agreement delivers savings with zero upfront cost — you simply buy the power cheaper. A lease shifts CapEx to OpEx. The right choice is a balance-sheet decision, and we model all three.
The ITC & bonus credits
The Section 48 Investment Tax Credit is the foundation, with additional bonuses for domestic content and energy communities, plus direct-pay and transferability options that broaden who can monetize the credit. Manufacturers can add 48C and 45X.
Solar by use case
The economics differ by building: warehouses and cold storage offer vast roofs above steady loads; data centers need capacity and resilience; manufacturers chase demand-charge and power-quality savings; property owners optimize for NOI and compliance. The strategy follows the use case.
Choosing an installer — and writing the RFP
Ask who owns the outcome after commissioning. Many vendors hand off between development, construction, financing, and monitoring — leaving you to coordinate the gaps. A single accountable team for the whole stack is the difference between a project and a partnership.