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C-PACE Financing Calculator

C-PACE finances clean energy + efficiency retrofits via long-term property tax assessment.

Project cost

C-PACE rate %

Term years

C-PACE LTV limit %

Property value

Annual energy savings

Annual assessment

$169,627

Savings/investment ratio

1.3

Max C-PACE (LTV limit)

$4,500,000

How the math works

Annual assessment amortizes project over term. SIR = savings ÷ assessment.

$2M at 7% × 25yr = $14,136/mo × 12 = $169,631/yr. SIR = $220k / $169,631 = 1.30 ✓.

Editorial noteMaintained by EveryCalc - Reviewed June 2026

EveryCalc calculators are designed for fast, practical estimates with transparent inputs and no required account. We use plain formulas, visible assumptions, and related tools so visitors can check the result from more than one angle.

Results are informational only. For financial, tax, legal, medical, construction, or other high-impact decisions, verify the output against primary sources or a qualified professional.

Learn more about our review process on the EveryCalc methodology page.

How this calculator works

What this page estimates

This C-PACE Financing Calculator is built to give a quick, browser-based estimate for c-pace financing. C-PACE finances clean energy + efficiency retrofits via long-term property tax assessment. The inputs stay on the page during normal use, and the result should be treated as an estimate for planning, comparison, or education rather than professional advice.

Calculation approach

The calculator applies the standard relationship implied by the inputs, then formats the answer so it can be checked and reused. For finance tools, the most important step is using consistent units, rates, time periods, and assumptions before comparing the result with another calculator or outside quote.

Example workflow

For example, start with a realistic value you already know, change one input at a time, and watch how the answer moves. That makes it easier to tell whether the result is being driven by the main amount, the rate, the time period, or a unit conversion.

Practical checks

Use current, real-world numbers when the result affects money, health, tax, or legal decisions.
Run a low, base, and high case when the inputs are estimates.
Check the related calculators below when the next decision depends on a different assumption.

How to interpret the c-pace financing result

Best use

Use the result as a planning number for comparing payments, rates, returns, tax reserves, or cash-flow choices before you request a quote or make a commitment.

Cross-check

Compare the answer with the contract, lender estimate, tax form, brokerage statement, payroll record, or invoice that will control the real-world outcome.

Watch for

Do not rely on a single optimistic rate, return, or fee assumption. Money pages work best when you run low, base, and high cases and keep professional advice separate from the estimate.

This page belongs to the Finance calculator library, so the answer should be read in the context of the decision you are modeling rather than as a universal rule.

Before relying on this c-pace financing estimate

Most calculator mistakes come from the inputs, not the arithmetic. Use this short audit before you reuse the answer in a spreadsheet, quote, application, or important conversation.

Confirm source numbers

Match balances, rates, fees, taxes, income, and payment dates against the lender quote, payroll record, tax form, statement, invoice, or contract.

Separate cash flow from total cost

A lower monthly payment can still cost more over time if fees, interest, taxes, or a longer term are hidden in the structure.

Run conservative cases

Test at least one higher-cost or lower-return case before using the output for a purchase, refinance, investment, loan, or tax decision.

Rerun this page when the rate, price, term, fee, tax rule, income, expense, or expected holding period changes.

How to Use

Enter project cost.
Enter C-PACE rate %.
Enter assessment term years.
Enter LTV limit %.
Enter property value.
Enter annual energy savings.
Read financing details and cash-flow.

Frequently Asked Questions

What is C-PACE?

Commercial Property Assessed Clean Energy: state/local program that funds energy efficiency, renewable energy, water efficiency, and resiliency retrofits via voluntary tax assessment on commercial property. Third-party capital provider funds upfront; property pays back via annual property tax bill over 15-30 years. Available in 38+ states. Loan structured as senior to mortgage (requires existing lender consent, typically). Interest rates: 5-9% fixed.

Qualifying projects?

(1) Energy efficiency: HVAC replacement, LED, insulation, windows, controls, roofing. (2) Renewable energy: solar PV, geothermal, battery storage, wind. (3) Water efficiency: low-flow fixtures, greywater, irrigation. (4) Resiliency: seismic retrofits, wind upgrades, flood protection. (5) Electric vehicle infrastructure. Most jurisdictions allow 'combined measures' — stack multiple retrofits under single C-PACE.

C-PACE vs conventional loan?

C-PACE pros: long term (15-30 yr vs 5-10 yr), fixed rate, non-recourse, transfers with property on sale, can exceed property LTV. C-PACE cons: higher rate than conventional (5-9% vs 5-7%), takes senior lien position (requires mortgage lender consent), annual escrow complication. Best for: deep retrofits with long payback, new construction where developer wants to preserve conventional debt capacity.

Energy savings required?

Most states require savings-to-investment ratio (SIR) > 1.0, meaning annual energy savings must exceed annual C-PACE assessment payment. Some states require 3rd-party engineering verification of savings. Conservative projects: 5-7% energy IRR. Aggressive: 15-25%. Many states require SIR > 1.25 or 1.5 for larger projects. Not all projects qualify — high-rate equipment (industrial boilers, specialty HVAC) may fall short.