I am pleased that I was one of the winners of your contest, but I am forced to refuse the prize for purely economic reasons.

To get to the prize from the Leningrad region, where I live, it takes 1.5 days and about 3 thousand rubles for train tickets in a pay-cart car (this is if not on "Sapsan"). Additional income tax of 35% of the price of the prize :-)

OptoLux lamp of 11 watts will save me a year compared to a 60-watt incandescent lamp with an average duration of its use of 2 hours per day (60-11)*2*365)/1000=35.8 kWh of electricity, which at today's rate in our city is 2.59 rubles / kWh (in the day zone) will be 92.7 rubles per year.

Therefore, the trip for the prize will pay off not earlier than in 3000/92,7 = 32 years!
All these, of course, are words. But energy-saving and environmental technologies are great, it needs to be, this is what I tell you as a specialist!