My breakdown of this company and after having back and forth with the founder on Crowdcube. The guy is a great salesman and to a layperson the technology sounds all fancy and futuristic ‘energy and data from footsteps’.
As an engineer, this does not make any sense. Power generated from footsteps is a joke. Some guy on crowdcube did a rough calc: All of the footsteps on pavegen products to date is about 500,000,000, at 4 joules per footstep, that’s 556kwh. The average household uses 5,000kwh per year in the UK. Sooo all of the footsteps to date could power one house for about a month. The cost of the installs to date i would estimate is to a factor of a million pounds. At 15p per kwh in the UK, you could buy the same amount of electricity for… £83.40.
I’ve asked the guy 3 times how long the slabs/tiles take to become carbon neutral, i.e. produce at least as much energy as it takes to manufacture, transport them etc. My guess is that they will never create net energy. This is the minimum requirement that you would expect from an energy source.
Regarding the data, it’s a load of rubbish. Think what data you can collect from these tiles that coule not be collected from a way simpler pressure sensor on the floor or even a single camera with image recognition to track people, which is pretty standard technology these days.
The only value is in the ‘cool’ idea, which to be fair seems to be working well for the company. I do not see this as a potential investment with sound fundentals.