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Q: How much energy can be produced in a month from a roof of say 1000 Square meters?

A: Ok, that is a big roof, to be honest I did not calculate it like that; let me answer this in another way. The design that we want to design is from 1 mm to the biggest tile is 300 x 300 mm, it takes 4 or 6 cells on it, and we want to come up with 20 W up to 200 W.

Q: But, when you say for example 20 W, you cannot compare it with a regular photovoltaic system, because photovoltaic is only for daytime.

A: In our technology we talk about from 20W, 24 hours, 7 days a week. So in kWh per year it is 8760. In kWh per year, you are away from what we do with normal PV; with normal PV we talk about 1000 square meter roof; or we talk per sq meter, let’s say about 200-220 W-peak per square meter and this you can multiply by 1000-1400 kWh and per W-peak per year, so a lot lower than what we do.

 

Q: What about in rainy days when there is no sunlight?

Q: And we could add here for our members for example from Finland, “What about winter time when the sun hides?”

A: We have the same electrical output 24 hours a day, 7 days a week.

Q: Does it depend on more or less sunshine in different countries?

A: No.

Q: This is because of the difference in temperature that we use?

A: Yes. We work against -40 degrees Celsius on cloudy days, including the nights where we also have clouds. And we work against -273.15 degrees Celsius on a clear starry night (absolute zero temperature; 0 K on the Kelvin scale).

Q: So that means that even for our members in Siberia where they have -50 degrees, there is no problem?

 

A: The system without the PV cell works for a long time, especially on the poles, because of the Seebeck effect and Peltier effect; it especially works good on the poles because of the high temperature difference. And it does not depend on the sun.

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