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System and modules

System power kWp   Module power Wp  
Module efficiency %   Number of modules    
Module area m2/mod   System area m2  

Prices and costs

    $ $/Wp  
PV modules $/mod   PV modules 2,000 0.889 29.6%
Area-scaling BOS $/m2   Area-scaling BOS 1,500 0.667 22.2%
Power-scaling BOS $/Wp   Power-scaling BOS 2,250 1.000 33.3%
Fixed BOS $   Fixed BOS 1,000 0.444 14.8%
  Installed system 6,750 3.000 100.0%
2.25 kWp system with 1.5 m2 modules at $200 each

Sweep efficiency from % to % with a

Computation time: 0.000 s.

Comments? Bugs? Errors? Compliments?

Welcome to the installed system cost calculator

This calculator calculates the cost to install a PV system based on the price, efficiency and area of its PV modules, as well as the balance of systems (BOS) costs.


BOS costs vary significantly from one application to another, and from one country to another. They can also vary rapidly over time. The default costs employed by this calculator, and the costs contained in the case studies listed within, should not be assumed to represent the BOS costs of any given PV installation.

The assumptions used in the calculations are described on the ''About'' page.


Neither PV Lighthouse nor any person related to the compilation of this calculator make any warranty, expressed or implied, or assume any legal liability or responsibility for the accuracy, completeness or usefulness of any information disclosed or rendered by this calculator.

Version 1.1.0, 20-August-2013

New in this version:

  • Enabled the page translation into other languages.

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