Chapter | 11 Software Infrastructure and the Smart Grid 287 Retail electric provider Market/settlement transactions Distribution utility Market/settlement transactions ERCOT Meter/HAN services Meter/HAN services (15-minute meter readings) Meter services (e.g., disconnect, HAN) Consumer Smart Meter Texas Host Meter/HAN transactions over utility infrastructure FIGURE 11.7 In Texas, the distribution companies maintain electricity usage data, though the Smart Meter Texas portal also stores the data for retrieval by other authorized users ("HAN" signifies "home area network"). (Source: Texas PUC Advanced Metering Implementation Team,