Increasing energy consumption and rising energy prices causes effective use of energy to become more and more important. To fulfill this objective, energy monitoring systems are being created which allows data collection and display the consumption of resources [1-3]. Energy sub-metering system usually consists of three main parts: the energy metering unit, data transmission system to transmit data to various data repositories and a system that graphically displays the data received or generates data reports. Data collection begins with the physical energy data measurements. For example, gas and water consumption data can be read optically. Electricity consumption can be measured using two methods: by scanning voltage and current instantaneous values with sufficient speed [4], or without the intervention to the electrical circuit using electrical sensors to read only the instantaneous current values [5-6]. To develop a prototype sub-metering system the second energy accounting method that allows the system to automatically monitor and collect data on energy consumption was chosen. Monitoring results must be easily accessible to the user not only on the Web, but also by the alternative users chosen means of communication (by fax, email, SMS). This paper analyzes the non-standard error processing solutions and their application to create a prototype, also issue-specific solutions related to energy transmission and processing using standard wired and wireless transmission protocols.
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