I was told that essentially it looks like it does because the site available was quite large leaving the architect the luxury of building something unique and interesting. Inside it is essentially what you would imagine such a facility to look like.
Marchwood incinerator is one of the sites where our non recyclable waste goes to be burnt. It is then converted into energy and supplied into the national grid, powering about 20,000 homes locally. At the end of the incineration process what's left over (called bottom ash) is separated out into metal, aluminium and glass. Most of the bottom ash is then used as aggregate in road building.