solar cremation

1) People die, even if you believe in new-age stuff or alternative medicine etc.

2) Burial takes a lot of space and not evrybody would like to cast such a space-claim after they have passed on. Being eaten by maggots and bug may also create some aversion against burial

3) Creamation is usually done with fossil fuels or local wood. Both are not very good for the environment.

4) Why not use the sun as the energy source for cremations?

That is the idea, here is how I see something like that would be implemented: the central location is a stonehenge like structure. In the center is an altar-like structure that can be raised from groundlevel to 10-20 feet high. Each mourner is, if they wish to participate, handed a double-sided mirror with a hole in it, and very dark sunglasses. Outside of the central structure are fields of pole-mounted mirrors that track the sun and focus it above the central altar. After the required ritual last ceremonies have been performed, the altar + corpse are slowly raised into the focal point of the mirror fields. In the final moments the coprse will be lit up literally and probably blind the onlookers (hence the sunglasses). The participating mourners can start/join with their own mirros, similar to the widow/family throwing the first hand of earth on the coffin.

To protect the public from nasty odors that come with cremating dead people, there is a big tray below the wireframe that holds the body where the ashes can fall into. Air is sucked in from the sides of this tray to be cleaned and expelled further off.

Offcourse you will need to locate this facility in a sunny country (maybe India, as they have a tradition of woodpyre funerals) but that should be no problem, as this grandeur is for the whealthy, one woould assume they can travel.