Solar Farm Cost Calculator

Estimate solar farm budgets from capacity inputs. Add land, equipment, labor, grid, and incentive assumptions. See cost metrics before funding, procurement, and deployment decisions.

Project Inputs

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Example Data Table

Scenario AC Size Gross CAPEX Net CAPEX Annual Energy LCOE
Small utility project 20 MWac $19,850,000 $13,895,000 36,168 MWh $46.70/MWh
Mid-size regional plant 50 MWac $46,930,000 $32,851,000 90,420 MWh $40.95/MWh
Large utility-scale build 100 MWac $90,400,000 $63,280,000 180,840 MWh $37.10/MWh

These sample values are illustrative. Actual project budgets vary by market, design, labor rates, financing terms, grid upgrades, and local incentives.

Formula Used

1. DC plant size
DC Size (MWdc) = AC Size (MWac) × DC/AC Ratio

2. Module count
Module Count = DC Watts ÷ Module Power

3. Equipment subtotal
Equipment = Module Cost + Inverter Cost + BOS Cost + Installation Cost + Tracker Cost

4. Land requirement
Land Area = AC Size × Acres per MWac

5. Pre-contingency CAPEX
Pre-Contingency CAPEX = Equipment + Land Purchase + Interconnection + Permitting + Engineering

6. Gross CAPEX
Gross CAPEX = Pre-Contingency CAPEX + (Pre-Contingency CAPEX × Contingency %)

7. Net CAPEX
Net CAPEX = Gross CAPEX − (Gross CAPEX × Incentive %)

8. Annual energy
Annual MWh = AC Size × 8760 × Capacity Factor × (1 − System Losses)

9. Annual operating cost
Annual Operating = O&M + Insurance + Land Lease + Admin Cost

10. Capital recovery factor
CRF = r(1+r)n ÷ ((1+r)n − 1)

11. Annualized CAPEX
Annualized CAPEX = Net CAPEX × CRF

12. LCOE
LCOE = (Annualized CAPEX + Annual Operating Cost) ÷ Annual Energy

How to Use This Calculator

  1. Enter the target AC plant size and DC/AC ratio.
  2. Provide component costs for modules, inverters, BOS, installation, and trackers.
  3. Fill in land assumptions, interconnection budget, permitting, and engineering costs.
  4. Set contingency, available incentives, capacity factor, and system losses.
  5. Add annual O&M, insurance, land lease, and administrative costs.
  6. Enter project life, discount rate, and expected selling price per MWh.
  7. Click the calculate button to view capital metrics, operating costs, energy output, LCOE, and payback.
  8. Use the CSV and PDF buttons to save the current scenario.

FAQs

1. What does this calculator estimate?

It estimates gross capital cost, net capital cost after incentives, annual operating cost, energy output, LCOE, revenue, and simple payback for a solar farm scenario.

2. Does the tool handle both capital and operating costs?

Yes. It combines one-time build costs with yearly expenses such as O&M, insurance, land lease, and administration to give a broader project view.

3. Why is DC/AC ratio important?

The ratio affects DC module capacity, equipment quantities, and energy economics. A higher ratio can increase production, but it also changes cost structure and clipping behavior.

4. What is LCOE in this calculator?

LCOE is the levelized cost of energy. It spreads annualized capital and annual operating costs across expected yearly energy production to show cost per MWh.

5. Can I use this for early feasibility screening?

Yes. It is useful for conceptual budgeting, site comparisons, and investor discussions. Final engineering, procurement, grid studies, and financing terms still require detailed analysis.

6. Does it account for financing complexity?

It uses a discount rate and project life through the capital recovery factor. That helps with annualization, but it does not replace a full debt and tax equity model.

7. How should I choose capacity factor and losses?

Use site-specific solar resource studies, layout assumptions, degradation estimates, clipping expectations, soiling, temperature losses, and inverter performance data for more realistic values.

8. Are the exported CSV and PDF files shareable?

Yes. They capture the current result set, making it easier to review options with clients, partners, lenders, or internal project teams.

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Important Note: All the Calculators listed in this site are for educational purpose only and we do not guarentee the accuracy of results. Please do consult with other sources as well.