get https://api.modoenergy.com/pub/v1/us/ercot/system/demand
Aggregated ERCOT system actual demand by 15-minute interval, for the most recent hour.
| Data source | ERCOT |
| Historical Data | 2015-12-31 |
| Update frequency | Every 15 minutes |
| Default timezone | America/Chicago |
| Granularity | 15 min |
| Subscription type | Free |