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The European energy system is currently evolving into a smart grid, and the transmission of metering values between smart meters is gaining increasing importance. Since wireless technologies have a high flexibility and can be easily integrated into existing installations, it is feasible to use them for transmission of metering values. This paper presents an evaluation of wireless smart metering standards operating in the 868 MHz frequency band according to European regulation. The standards are compared by evaluating the indoor coverage range and the energy consumption.