Don't bill deep geothermal as any sort of green. There are usually emissions that have health consequences for the population around the power plant. The corrosion of the pipes bringing steam from the drill site to the turbines is massive. Drilling that deep and pumping water into the hole ups the risk of earthquakes.
(source: I live in Reykjavík and have witnessed first-hand the increased stench from the Hellisheiði geothermal plant)
(source: I live in Reykjavík and have witnessed first-hand the increased stench from the Hellisheiði geothermal plant)