Capex vs PPA for NJ Commercial Solar: 2026 Decision Framework

For New Jersey commercial property owners considering solar, the financing decision is often as consequential as the contractor decision. Capex versus PPA changes who owns the asset, who captures the federal Investment Tax Credit, and how the savings flow over 25 years. Here’s the 2026 decision framework we use at LandAir Energy when modeling both options with client CPAs.

The Three Questions That Decide Structure

Before any modeling, three questions filter the choice:

1. Is your business taxable? Taxable C-corps and S-corps with sufficient tax liability to absorb the 30% federal ITC favor capex. Tax-exempt 501(c)(3) entities favor PPA (or IRA Direct Pay).
2. Do you have capital available (or financing access)? Capex requires either cash or a commercial loan. PPA requires neither.
3. What’s your facility ownership horizon? Capex works best with 10+ year ownership. PPAs work for any horizon since they’re tied to the system, not the owner.

Capex (Cash or Financed Purchase)

You own the system outright. You capture every incentive directly: federal ITC, MACRS depreciation, bonus depreciation, NJ Successor Solar Incentive (SuSI) credits, net metering. For a taxable C-corp with strong tax position, capex delivers approximately 40-50% net cost after Year 1 incentive stacking on a typical NJ commercial project.

Sample math for a $400,000 capex commercial solar system, taxable C-corp owner, 2026:

• Gross system cost: $400,000
• Federal ITC (30%): minus $120,000 = direct federal tax reduction
• Depreciable basis after ITC: $340,000 ($400K minus 50% of ITC)
• Year 1 bonus depreciation (40%): minus ~$45,000 in tax benefit at 25% effective rate
• Year 1 NJ SuSI credits: ~$28,800 (320,000 kWh × $90/MWh)
• Year 1 net cost: ~$185,000 to $220,000 (40-50% of gross)
• Years 2-15 NJ SuSI cumulative: $300,000+ in additional revenue

Typical capex payback for NJ commercial: 4 to 6 years. After payback, the system continues producing positive cash flow through year 25.

Power Purchase Agreement (PPA)

A third-party developer owns the system and sells you electricity at a fixed rate below your current utility rate. Typical PPA escalator: 1.5% to 2.9% annually. The developer keeps the federal ITC and depreciation. You pay nothing upfront and reap savings from day 1.

Sample math for a PPA on the same 320,000 kWh/year system:

• Upfront cost: $0
• Annual PPA payment Year 1: ~$33,280 (320,000 kWh × $0.104, ~20% below typical PSE&G rate)
• What you would have paid utility (Year 1): ~$41,600 (320,000 kWh × $0.13)
• Year 1 savings: ~$8,320 (positive cash flow day 1)
• Cumulative 25-year PPA savings: $250,000 to $400,000 depending on utility rate trajectory

PPAs win on simplicity and cash flow but capture significantly less total value than capex over the system lifetime.

When PPA Wins

• Tax-exempt entities that cannot use federal ITC directly
• Capital-constrained owners unable to access financing
• Short or uncertain facility ownership horizons
• Owners prioritizing immediate positive cash flow over total NPV

When Capex Wins

• Taxable entities with sufficient federal tax liability
• Long-term facility owners (10+ year horizon)
• Strong NJ SuSI program eligibility (15-year credit stream)
• Owners willing to accept upfront capital outlay for higher total returns

The IRA Direct Pay Option

Tax-exempt 501(c)(3) nonprofits, public schools, and government entities have a third path. The Inflation Reduction Act allows them to elect Direct Pay — they receive the 30% federal ITC as a cash payment from the IRS instead of as a tax credit. This combines capex-style ownership with PPA-style accessibility for entities that couldn’t otherwise use federal incentives.

For NJ commercial property owners evaluating financing structures, the right move is to model all three options against your specific tax position before contracting. Our Commercial Solar Financing service coordinates with your CPA to build the side-by-side comparison.