A Solar Equipped Monolithic Dome in Illinois Solar Equipped in Illinois — Kati and Robin Millers’ Monolithic Dome home has 6 solar-thermal collectors that collect the sun’s heat and convert it into thermal energy. It heats water that circulates through the radiant heating system to heat the home. Hot dog sticking out of a round bun — That was one description of their dome-home that the Millers heard. But it’s really a hemisphere with a 48-foot diameter and a tubular extension, built using a single Airform. Window with an eyebrow — The eyebrow is a rebar frame epoxied into the concrete shell, sheathed with a plywood and foam sandwich, and topped with more Airform fabric.