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ToolFusion / Solar Photovoltaic System / Engineering Tools

Project Tool: Off-Grid Solar PV System Complete Design

Specification & Integration Verification

F6 Composition for Off-Grid Solar PV System Complete Design

● Not Golden Verified ● Project Trust Verified Runnable: 0 / 12 steps
VERIFIED SCOPE
○ PV module temperature-derated power CALCULATION Input Required
○ PV array required energy CALCULATION Input Required
○ PV array peak power CALCULATION Input Required
○ PV module count CALCULATION Input Required
○ PV string series count CALCULATION Input Required
○ PV parallel string count CALCULATION Manual Workflow
○ Battery bank capacity CALCULATION Manual Workflow
○ Inverter rated power CALCULATION Input Required
○ Charge controller rating CALCULATION Input Required
○ DC cable sizing (wire resistance) CALCULATION Input Required
○ PV daily energy yield CALCULATION Manual Workflow
○ PV system energy balance CALCULATION Input Required
⚠ This tool does not currently verify OffGridPVSystemEnergyRequirementScaling, PVArrayNominalPowerSizingFromYield, PVModuleTemperatureDerating, PVModuleCountByPowerCapacity, PVStringVoltageLimitEnforcement, PVParallelStringCountSelection, OffGridBatteryBankSizing, InverterContinuousRatingSelection, ChargeControllerCurrentSizing, DCConductorVoltageDropCalculation, PVSystemDailyYieldEstimation, OffGridEnergyBalanceVerification.
PROJECT INPUTS

Runnable deterministic steps: 0 / 12. Enter the project conditions required by this workflow.

01Step 1: PV module temperature-derated powerFormula
W
1/K
K
K
Calculate PV module power output adjusted for operating temperature using temperature coefficient
02Step 2: PV array required energyFormula
kWh
ratio
Calculate PV array required energy from daily demand and system efficiency
03Step 3: PV array peak powerFormula
kWh/day
h
Calculate PV array peak power rating from energy and peak sun hours
04Step 4: PV module countFormula
kW
W
Calculate number of PV modules from array power and module power
05Step 5: PV string series countFormula
V
V
Calculate series modules per string from MPPT voltage range
06Step 6: PV parallel string countManual Workflow
count
count
Calculate number of parallel strings from total modules and series count
07Step 7: Battery bank capacityManual Workflow
Wh
V
1
1
Calculate required battery bank capacity in Ah for off-grid solar system based on daily energy consumption, system vo...
08Step 8: Inverter rated powerFormula
W
ratio
Calculate inverter rated power from maximum load with safety factor
09Step 9: Charge controller ratingFormula
A
count
ratio
Calculate charge controller current rating from module Isc and string count
10Step 10: DC cable sizing (wire resistance)Formula
ohm*m
m
mm^2
Wire resistance: R = rho*L/A from Ohm law for uniform conductor
11Step 11: PV daily energy yieldManual Workflow
kW
h
ratio
Calculate PV daily energy yield from rated power, sun hours, and performance ratio
12Step 12: PV system energy balanceFormula
kWh/day
kWh/day
Calculate system energy balance from yield and required energy

⚠ Runnable deterministic steps: 0 / 12. Steps marked "Input Required" or "Example Input Required" need user-provided engineering values before calculation.

ENGINEERING WORKFLOW GUIDE
This workflow contains no executable calculation steps. Review the engineering methods below.
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ENGINEERING EVIDENCE

Golden Coverage0 / 12
Project Trust11 / 11 PASS
RuntimeDeterministic
Components0 small tools, 12 steps

SCOPE & LIMITATIONS

NOT CURRENTLY VERIFIED
○ OffGridPVSystemEnergyRequirementScaling
○ PVArrayNominalPowerSizingFromYield
○ PVModuleTemperatureDerating
○ PVModuleCountByPowerCapacity
○ PVStringVoltageLimitEnforcement
○ PVParallelStringCountSelection
○ OffGridBatteryBankSizing
○ InverterContinuousRatingSelection
○ ChargeControllerCurrentSizing
○ DCConductorVoltageDropCalculation
○ PVSystemDailyYieldEstimation
○ OffGridEnergyBalanceVerification
These capabilities are outside the current verified workflow.

HOW THIS VERIFICATION WORKS

  1. Step 1: PV module temperature-derated power — performs a deterministic calculation from the provided inputs. No acceptance criterion is applied; the result is CALCULATED only.
  2. Step 2: PV array required energy — performs a deterministic calculation from the provided inputs. No acceptance criterion is applied; the result is CALCULATED only.
  3. Step 3: PV array peak power — performs a deterministic calculation from the provided inputs. No acceptance criterion is applied; the result is CALCULATED only.
  4. Step 4: PV module count — performs a deterministic calculation from the provided inputs. No acceptance criterion is applied; the result is CALCULATED only.
  5. Step 5: PV string series count — performs a deterministic calculation from the provided inputs. No acceptance criterion is applied; the result is CALCULATED only.
  6. Step 6: PV parallel string count — engineering workflow step. Follow the documented method for manual execution.
  7. Step 7: Battery bank capacity — engineering workflow step. Follow the documented method for manual execution.
  8. Step 8: Inverter rated power — performs a deterministic calculation from the provided inputs. No acceptance criterion is applied; the result is CALCULATED only.
  9. Step 9: Charge controller rating — performs a deterministic calculation from the provided inputs. No acceptance criterion is applied; the result is CALCULATED only.
  10. Step 10: DC cable sizing (wire resistance) — performs a deterministic calculation from the provided inputs. No acceptance criterion is applied; the result is CALCULATED only.
  11. Step 11: PV daily energy yield — engineering workflow step. Follow the documented method for manual execution.
  12. Step 12: PV system energy balance — performs a deterministic calculation from the provided inputs. No acceptance criterion is applied; the result is CALCULATED only.

This tool coordinates 0 validation steps and 12 calculation steps. The overall engineering decision uses ALL_REQUIRED_VALIDATION_PASS aggregation: only validation steps contribute to the pass/fail outcome; calculation steps produce data only.

METHODS & EQUATIONS

All formulas are resolved from canonical runtime definitions and executed deterministically by the client-side engine.

Step 1: PV module temperature-derated power

Formularated_power*(1+temp_coeff_pmax*(module_temp-stc_temp))

Step 2: PV array required energy

Formuladaily_energy_kwh/system_efficiency

Step 3: PV array peak power

Formulae_array_kwh/peak_sun_hours

Step 4: PV module count

Formulaceil(p_rated_kw*1000/p_mod_actual)

Step 5: PV string series count

Formulafloor(v_mppt_max/v_mppt_module)

Step 6: PV parallel string count

Manual Workflow
ceil(n_mod / n_series)

Step 7: Battery bank capacity

Manual Workflow
(daily_energy_consumption_wh / nominal_system_voltage_v) / (depth_of_discharge * temperature_derating_factor)

Step 8: Inverter rated power

Formulap_load_max*safety_factor

Step 9: Charge controller rating

Formulaisc_module*n_string*safety_factor

Step 10: DC cable sizing (wire resistance)

Formularho_resist*l_wire/a_cross

Step 11: PV daily energy yield

Manual Workflow
p_rated_kw * peak_sun_hours * performance_ratio

Step 12: PV system energy balance

Formulae_yield_kwh-e_required_kwh

UNDERSTANDING THE RESULTS

PASS
A proven validation criterion passed. The engineering input satisfies the deterministic threshold.
FAIL
A proven validation criterion failed. The engineering input does not satisfy the deterministic threshold.
CALCULATED
A deterministic calculation completed, but no acceptance criterion exists for this step. CALCULATED does NOT mean PASS.
RESULT NOT VALID
Runtime executed but engineering validity requirements were not met.
INCOMPLETE
Required inputs or workflow steps are incomplete.

The overall decision reflects only validation steps. Calculation steps produce numerical results without pass/fail claims.

WHEN TO USE THIS TOOL

  • When deterministic Solar Photovoltaic System engineering verification is needed for project-specific conditions.
  • For calculation of PV module temperature-derated power (Step 1).
  • For calculation of PV array required energy (Step 2).
  • For calculation of PV array peak power (Step 3).
  • For calculation of PV module count (Step 4).
  • For calculation of PV string series count (Step 5).
  • For calculation of PV parallel string count (Step 6).
  • For calculation of Battery bank capacity (Step 7).
  • For calculation of Inverter rated power (Step 8).
  • For calculation of Charge controller rating (Step 9).
  • For calculation of DC cable sizing (wire resistance) (Step 10).
  • For calculation of PV daily energy yield (Step 11).
  • For calculation of PV system energy balance (Step 12).
  • For deterministic pre-checks before formal engineering review or submission.

When NOT to use this tool: This tool does not replace laboratory testing, formal engineering analysis by a licensed professional, or code-compliance certification. It performs deterministic threshold comparison and calculation only.

ENGINEERING FAQ

What does this verification tool check?

This tool performs 12 deterministic engineering steps: (1) PV module temperature-derated power, (2) PV array required energy, (3) PV array peak power, (4) PV module count, (5) PV string series count, (6) PV parallel string count, (7) Battery bank capacity, (8) Inverter rated power, (9) Charge controller rating, (10) DC cable sizing (wire resistance), (11) PV daily energy yield, (12) PV system energy balance.

What does a CALCULATED result mean?

A CALCULATED result means the deterministic calculation completed, but no acceptance criterion is applied to this step. CALCULATED does NOT mean PASS.

What is not currently verified by this workflow?

Capabilities not currently verified include: OffGridPVSystemEnergyRequirementScaling, PVArrayNominalPowerSizingFromYield, PVModuleTemperatureDerating, PVModuleCountByPowerCapacity, PVStringVoltageLimitEnforcement.

How many steps are golden verified?

0 out of 12 steps have been verified with deterministic golden test cases.

COMPONENT TOOLS

This workflow currently contains no bound executable Small Tools. Steps are defined by engineering methods and reference materials.

CalculationWorkflow StepStep 1: PV module temperature-derated power
CalculationWorkflow StepStep 2: PV array required energy
CalculationWorkflow StepStep 3: PV array peak power
CalculationWorkflow StepStep 4: PV module count
CalculationWorkflow StepStep 5: PV string series count
CalculationWorkflow StepStep 6: PV parallel string count
CalculationWorkflow StepStep 7: Battery bank capacity
CalculationWorkflow StepStep 8: Inverter rated power
CalculationWorkflow StepStep 9: Charge controller rating
CalculationWorkflow StepStep 10: DC cable sizing (wire resistance)
CalculationWorkflow StepStep 11: PV daily energy yield
CalculationWorkflow StepStep 12: PV system energy balance

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