# customer-usage-site-summaries Usage quantities and cost grouped by site ## Check if customer usage site summary information exists - [HEAD /customer-usage-site-summaries](https://docs.elevatebilling.com/openapi/prod/billing-rest-customer/customer-usage-site-summaries/checkcustomerusagesitesummaries.md): Count usage quantities and cost grouped by site id ## Returns customer usage site summary information - [GET /customer-usage-site-summaries](https://docs.elevatebilling.com/openapi/prod/billing-rest-customer/customer-usage-site-summaries/getcustomerusagesitesummaries.md): Returns usage quantities and cost grouped by site id