curl --request GET \
  --url https://api.voltview.co.uk/v1/sites/{siteId}/annualConsumptionAndEmissions \
  --header 'x-api-key: <api-key>'

{
  "siteId": "<string>",
  "period": "<string>",
  "consumption": 123,
  "emissions": 123,
  "emissionsIntensity": 123,
  "comparisonPeriod": "<string>",
  "previousConsumption": 123,
  "previousEmissions": 123,
  "consumptionChange": 123,
  "emissionsChange": 123
}