# Photovoltaic Module JSON-LD

#### William C. Oltjen, Laura S. Bruckman, Roger H. French

#### 2023-08-09

## Photovoltaic (PV) Modules JSON-LD Description

This json-ld template is used to store metadata information commonly used to describe photovoltaic (PV) Modules. There is information included on the cells, encapsulant, backsheet, electrical properties, and module dimensions.

Note that a lot of the material included in this json pulls from the OrangeButton Taxonomy.

## Creating JSON-LD for PV Modules in R

    library(FAIRmaterials)

    # An example data frame for PV Modules
    module_example <- data.frame('CellTechnologyType' = c('PERC', 'Al-BSF'),
                                'CellMaterial' = c('mono-crystalline', 'poly-crystalline'),
                                'EncapsulantMaterial' = c('EVA', 'POE'),
                                'BacksheetMaterial' = c('PVF', 'PET'),
                                'BacksheetColor' = c('White', 'Black'),
                                'ProdMfr' = c('CSI', 'FirstSolar'),
                                'ProdCode' = c('BiHiKu7', 'BiHiKu7255'),
                                'CellCount' = c(60, 72),
                                'ModuleEfficiency' = c(20.1, 22),
                                'GlassThickness' = c(2, 1.5),  # GT and J_Box are not included in the
                                'J_Box' = c('IP68', 'IP70')) # base template, but they still have a spot!

    # This will generate JSON-LD file for the example data
    output <- fairify_data(module_example, domain = 'PVModule', saveLocal = TRUE)

## Creating JSON-LD for PV Modules in Python

    from fairmaterials.fairify_data import *
    import pandas as pd

    # An example data frame for PV Modules
    module_example = {'CellTechnologyType' : ['PERC', 'Al-BSF'],
                      'CellMaterial' : ['mono-crystalline', 'poly-crystalline'],
                      'EncapsulantMaterial' : ['EVA', 'POE'],
                      'BacksheetMaterial' : ['PVF', 'PET'],
                      'BacksheetColor' : ['White', 'Black'],
                      'ProdMfr' : ['CSI', 'FirstSolar'],
                      'ProdCode' : ['BiHiKu7', 'BiHiKu7255'],
                      'CellCount' : [60, 72],
                      'ModuleEfficiency' : [20.1, 22]}

    module_example = pd.DataFrame(module_example)

    # This will generate JSON-LD file for the example data
    output <- fairify_data(module_example, domain = 'PVModule')

## PV Module schema diagram

PV Module schema diagram

## Acknowledgment

This material is based upon work supported by the U.S. Department of Energy’s Office of Energy Efficiency and Renewable Energy (EERE) under Solar Energy Technologies Office (SETO) Agreement Number DE-EE0009347.