Visualising the Invisible – The Wattson

At the Tent London show during last week’s London Design Festival we came across the wonderful Wattson, produced by DIY Kyoto. The Wattson is a device for tracking and visualising your household or business electricity use, a great example of ambient feedback that we’ve touched on before.

The Wattson shows you either a gentle blue glow to indicate that your household electricity usage is reasonable, or a choice of kilowatts or pounds spent over a year based on your current electricity consumption. The yearly figure is a great way to inject fear into your wallet and encourage reduced electricity consumption, so much so that DIY Kyoto are seeing 20% reductions in electricity usage amongst users of their Holmes software who sign up to their website. That’s a great achievement, and all the better for being achieved by the carrot of positive feedback rather than the stick of fines and taxes.

The Wattson we bought at the show is a lovely piece of engineering, from a team of product engineers part funded by NESTA (a non-government body that funds creative innovation – in full disclosure I did use to work for them). The unit works by attaching round the main electric wire that comes into your house or flat, and then transmitting a signal to the main Wattson box that sits, visibly, in your living room. The transmitter is powered by four AA batteries (supplied) and the display unit has a charger, or can be powered by the USB connector through which you can also connect to the free software to review your consumption (figures are stored in the Wattson for the last 4 weeks).

This is all very exciting and I’m looking forward to getting ours working.. the only problem right now is that the standard transmitter connector only goes round standard electrical wires and our flat has a shielding, thick cable going straight into a junction box! The Wattson website rightly advises that you employ a professional electrician in these situations. So you’ll have to wait a bit longer for some proper feedback on how it works in practice. In the meantime we’ll just keep turning off lights and un-plugging our TV without knowing which activity is really having the most impact.