Cremation requires a lot of heat energy, so doing it solar seems to make a lot of sense. I found a couple of visions for this idea:
A quirky vision for LA, created by Margot Krasojević, including also a tattoo studio to inscribe your body with ink from your dear’s ashes.
Also a more poetic approach by Phillip Weller (cargocollective):
Canadian TV series “The re-inventors” in 2010 had an episode to test a patent for Solar Crematorium:
But it is not merely visions. One real prototype was built in India, Gujarat, in 2011. It appears to be non-operational for some reason.
