| Name | Type | Description | Notes |
|---|---|---|---|
| end_at | int | End of interval. The format is Unix epoch time unless you pass a `datetime_format` parameter as described here. | |
| wh_del | int | Energy delivered during this interval, in Watt-hours. | |
| devices_reporting | int | Number of revenue-grade meters that reported data for this interval at the time of the request. |