Geothermal Power's 20% Surge Still Can't Catch Wind and Solar
Mathematics of Geothermal Energy
Geothermal energy taps Earth's internal heat, with gradients averaging 2.5–3°C per 100 meters. The first plant opened in Larderello, Italy, in 1904, and today steam above 95°C drives turbines directly. Despite high upfront costs, geothermal offers consistent baseload power with negligible fuel costs and no long-term waste. Global production rose 20% between 2005 and 2010, yet it still lags far behind other renewables due to limited high-quality sites and transmission hurdles.
Unlike wind, which is intermittent because of its dependency on weather conditions, geothermal electricity can be relied upon to produce consistent baseload power.