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In general, the detection of the failure of the solar panel module is difficult; hence, it is normally left
without maintenance even during the guarantee period. It is also useful for the customer to be
informed that the trouble is caused by climate change or a stain/malfunction of the solar panel. The
system has to report the result to the cable customer. In case of a home battery, the system has to
provide the appropriate exchange date of the defective battery or advise on the economical usage
of the battery based on a past operation record. The system must send the information by e‐mail
to the assigned address.

Presentation items

The presentation items are shown below to realize the aforementioned services:
1 Electric power consumption (real time, every hour, past record, regional ranking);
2 Electric power generation (real time, every hour, past record, regional ranking);
3 Electric power fee (time zone, monthly, comparison with previous year);

4 Battery status (real time, charge/discharge record) and exchange date;
5 Usage report by the power company (regional power balance);

6 Malfunction of the solar power panel and/or necessity of cleaning;
7 Setting threshold of power consumption and control. Technical Report of the Focus Group
on Smart Cable Television ITU‐T FG Smart Cable Technical Report 5;
8 Alert indication over threshold, usage recommendation, sending e‐mail;
9 Power saving schedule in region;

10 Economical usage information;
11 Contract detail with the power company;
12 Setting of presentation.

High‐level system architecture

Figure 79 – Shows the high‐level system architecture for home energy management services

Pre‐conditions
 The residential gateway and measurement devices for power consumption should be provided
in the customer premises.

ITU‐T's Technical Reports and Specifications 321