Hydro is not renewable when the basins are being refilled by glacial melt as is the case for most of Europe, and precipitation is also becoming more erratic. For example, Iceland is currently relying on hydro power for 70% of its electricity, but current models predict that glacial runoff will peak around 2060 (or earlier, if the arctic temperature continues its upward trend). After that, the potential power to be generated from hydro will gradually decrease, which is why Iceland is now diversifying towards geothermal and wind.