One critically important element used today is hydro storage capacity in neighboring Norway (which is supplied by 99% hydro) and Sweden (over 50% hydro), supported by robust interconnection transmission lines.

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As is to be expected, ordinary digital transmission is nowhere near robust enough to cope with the problems experienced by a mobile receiver, which can suffer from all sorts of doppler-shift effects and multipath radio interference as it moves around the place.

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What also matters is whether so-called resolution procedures - emergency action when a bank gets into difficulties to break the relevant bank up, in order to protect depositors and the money transmission system - are perceived to be so robust as to minimise the potential for financial crisis.

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