Sulis etymology, as well as several other characteristics, such as the association with sight, civic law, and epithets relating to light, Sulis has been interpreted as a solar deity, at least in pre-Roman times. Some researchers have further suggested a role as the "de facto" Celtic solar deity, the associated Sulevia and similar names being the goddess's attestations elsewhere. Sulis has a number of modern-day worshipers among the Wiccan and Pagan communities. As of 1998, some people still deposited offerings in the waters of the Roman baths. Sulis In localised Celtic polytheism practised in Britain, Sulis was a deity worshipped at
Geothermal energy a renewable energy source like geothermal. But as a result of government assisted research and industry experience, the cost of generating geothermal power has decreased by 25% over the past two decades. In 2001, geothermal energy costs between two and ten US cents per kWh. Hot springs have been used for bathing at least since Paleolithic times. The oldest known spa is a stone pool on China's Lisan mountain built in the Qin Dynasty in the 3rd century BC, at the same site where the Huaqing Chi palace was later built. In the first century AD, Romans conquered "Aquae Sulis",