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In 2008, DONG energy implemented an IT solution that determines all line load flows, transformer loads and bus voltages in the entire MV network every 10 minutes. Calculations are based on a combination of on-line measurements and statistically based synthetic load curves for various load types and seasons. The solution -'SmartPIT'-provides an unprecedented amount of information about the network state. The entire MV network may now be analysed, planned and operated on actual hour-by-hour values rather than peak estimates.