At IKEA of Sweden in Älmhult, Product Design Engineer Philip Holm places the SAMMANLÄNKAD table lamp on a workshop table, going on to detail the lamp’s qualities. An aspect he notes with particular enthusiasm is the power of the light, a feature managed to differentiate it from many decorative solar lamps on the market.
“An important aspect was to get a higher light output than the cosy, soft garden lighting with low power in this collaboration. It’s really the size of the LED light source that makes this possible”, Philip explains.
Having worked with solar cells at IKEA since about 2006, Philip sits on a great deal of knowledge regarding the capacity of solar powered products, not least at scale.
Like how every layer of glass in a window can significantly reduce the power of an indoor solar charge, even if it seems bright enough.
“Solar-powered products are best charged outdoors, so we have to make sure that they last in that environment. The sturdiness and durability are in the material, and for the SAMMANLÄNKAD table lamp, that’s stainless steel for a quality finish that weathers the outdoors”, Philip explains.
He also notes that the brightness of daylight offered by a cloudy, dreary southern Swedish winter day is only a fraction of that of a long, sunny summer day, which naturally has significance to solar powered products. The contrast at the same given time in peak daylight can be as stark as getting only a few hundred lux – which may not even meet the threshold for a charge – versus more than 100 000 lux in the case of the latter.
“It’s important to remember that these products as solar powered are largely seasonal, which is why we made sure that the SAMMANLÄNKAD table lamp can also be plugged in”, says Philip.