Looking at the CO2 emissions of local council websites
This uses a port (and update) of WholeGrain Digital's WebsiteCarbon API 2.0 php code with figures updated to version 3.
The update.pl script needs the environment variable CC_GPSAPI_KEY set to your API key for Google's Pagespeed as that is what it uses to assess each URL.
The script reads data/index.json and for each org processes any urls that it contains. Each org looks like e.g.:
"E06000001": {
"active": true,
"name": "Hartlepool Borough Council",
"urls": {
"https://www.hartlepool.gov.uk/": {
"values": {
"2021-03-10": { "CO2": 0.22, "ref": "https://www.websitecarbon.com/website/hartlepool-gov-uk/" },
"2021-05-27": { "CO2": 0.21, "bytes": 349031, "green": 0, "imagebytes": 116453 },
"2021-06-30": { "CO2": 0.21, "bytes": 350015, "green": 0, "imagebytes": 116454 },
"2021-07-29": { "CO2": 0.21, "bytes": 356419, "green": 0, "imagebytes": 116454 },
"2021-08-31": { "CO2": 0.21, "bytes": 356493, "green": 0, "imagebytes": 116452 },
"2021-10-06": { "CO2": 0.22, "bytes": 361724, "green": 0, "imagebytes": 116454 },
"2021-11-02": { "CO2": 0.21, "bytes": 353640, "green": 0, "imagebytes": 116455 },
"2021-12-08": { "CO2": 0.22, "bytes": 361341, "green": 0, "imagebytes": 116454 },
"2022-01-04": { "CO2": 0.21, "bytes": 353466, "green": 0, "imagebytes": 116453 },
"2022-02-01": { "CO2": 0.22, "bytes": 361772, "green": 0, "imagebytes": 116454 }
}
}
}
}The update.pl calls process.pl which will add a new dated entry for each org+url. Each entry contains the estimated CO2 (g), the bytes, if it is marked as a green web server (this relies on having an extract of the Green Web Foundation's data in e.g. data/raw/green_urls_2022-09-09.db), and the total bytes for images.