https://www.indiegogo.com/projects/solargaps-energy-generating-smart-solar-blindsThe principle is not at all unreasonable, and I've on occasion slung a 20W panel behind a window to charge a battery. As such, it works.
"Once installed over a window (inside or outside), the smart blinds with built-in solar panels can generate up to 100W of energy per 10 sq. ft. (? 1 m2) "OK, that sounds about ballpark, a square metre of PV gives about 150W max if at optimum angle, and since this probably won't be optimally angled, 100W is a reasonable assumption. However, they then say:
"For example, a three-room apartment with four windows of 2 sq.m. (about 20 sq. ft.) each facing south may be able to produce on average 7 kWh a day / 210 kWh a month assuming average daylight of 8.5 hours a day." The mention of South-facing windows suggests a Northern latitude, since South-facing windows wouldn't get much sun if on the equator. However, Northern latitudes don't get anything like 8.5 hours of strong sun per day, averaged over the year. Neither would the equivalent Southern latitude.
The typical yield in Northern Europe is about 2kWh per kW of installed capacity, per day, averaged over the year. So, a realistic claim for 8 sqm of panel at 100W per sqm (their figure) would be 2x800W, or about 1.6kWh per day on average. In equatorial regions you are going to hit the problem of the vertically-placed panels being poorly aligned to the sun. Tilting panel sections can only compensate for this up to a point, since you end up with sections shadowing each other. I'd take a guess that you might double the European figure in a few really sunny places, but that's still
way short of the claim.
Thus, that 7kWh figure does seem like a serious overstatement of its capability. Anyone care to check my math?
Oh, and:
"ENERGY REDUCING - In addition to generating solar energy, the window blinds also save energy by shading your home interior and reducing air condition cost by up to 80%. " Seems unlikely. Black solar panels placed in a sunny window become, in effect, a solar room heater. If you want to keep the heat out, you need white or reflective blinds.
Obvious issue here is that buyers will be expecting a return on their investment, which by all accounts is not far short of the cost of a rooftop install.