Hi, English is not my first language... if you could just explain to me the ''cloth'' thing, if it isn't problem for you, I can't make sense of it.

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Why space matters and why is that pretty big problem? For example: a house owner wants to install on his roof some solar system. Let's say when researching he finds final two best systems (first and second). His roof is 20m2. With the first system installed, it can produce 740 watts, while the second system can produce 4280 watts, both in perfect conditions, of course. But the owner uses much more energy during the day.

Now, I see their system working well in villages- for those places space that that system takes is not problem, but not in towns or cities. They have to make better efficiency, at the moment it is just small. I applaud them for creating this light tech, but it just takes too much space, while people are year by year using more energy.

So it has a power density of 370 watts per 10 square meters (37 watts per m2).

''The fabric modules had a power density of 370 watts per kilogram and weighed 0.1 kilogram per square meter.''

While this has power density of 214 watts per m2

''Commercial residential silicon solar panels, by contrast, have a power density of 20 W/kg and weigh 10.7 kg/m2''

And this has power density of 182 watts per m2

'' while cadmium-telluride thin-film solar modules on glass substrates have a specific power of 13 W/kg and weigh 14 kg/m2.''

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It needs to be way cheaper, because it uses A LOT more space to produce same amount of energy. It uses 5,78 m2 to produce 214 watts or 4,92 m2 to produce 182 watts.....oh and of course it isn't commercialized still, we don't know about reliability, efficiency drop in the long term. But I see this technology now being used in transport for example, because of lightness, nothing more.