Graduate shows 2016: in this movie, Royal College of Art graduate Meret Vollenweider explains how her interactive installation of human-powered appliances aims to stop people taking electricity for granted.

Vollenweider designed Inefficiency Machines together with fellow graduate Wasabii Ng for the Information Experience Design masters programme at the Royal College of Art. The installation features three electronic devices that visitors must power by exaggerated body movements.

Visitors are invited to turn on a television by jumping up and down repeatedly on a trampoline, light up a bulb by pounding with a pestle in a mortar, or power a hairdryer by screaming into a microphone.

"This project is all about energy and efficiency and how we take electricity for granted," Vollenweider explains in the movie, which Dezeen filmed at the ShowRCA 2016 graduate show in London.
Each of the installations features sensors, which translate human body movements into electricity.

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The faster visitors bounce, the harder they pound, or the longer they scream, the more power will be provided to the appliances.

After each activity, visitors receive a printout stating how much energy they generated and comparing it to the average energy consumption of the particular appliance they were attempting to power.

"The visitor receives their personal efficiency results for ...