Geothermal energy is a clean and renewable source of power, which has a number of environmental and economic advantages over traditional fossil fuel sources. This energy is commercially produced from naturally occurring steam and hot water trapped in reservoirs of permeable rocks below the earth's surface. Driven by climate change concerns, favourable government support and increasing energy consumption, what was once called “alternative energy” has now moved to the mainstream.
The global trend today is toward clean, green and renewable energy. Geothermal is one of the safest and environment friendly energy we have today. We at GDC pride ourselves for spearheading this sector. It is our creed at GDC to pursue all practices that will save our environment from pollution with our commitment to provide affordable, safe and reliable energy to as many Kenyans as possible, GDC by extension will be saving on the use of wood fuel and thereby save our forests.
The design and execution of our activities adheres to the highest form of prescribed environmental standards expected of a progressive, responsive and responsible corporate culture.
1. Reduced green house gas emissions
2. Geothermal exploitation takes little space
1. Reliable, renewable and plentiful source of energy
1. Strengthens local economies by providing employment and tax/royalty revenues
2. Reduces dependency on fossil fuel and foreign oil imports
3. Diversifies power supplies
4. Provides base load power that is immune to fuel price shocks
5. Carbon credits earned through emmission reduction
Geothermal Power Plants
Throughout history, geothermal energy had been used for heating and bathing. Electricity from geothermal energy was first produced commercially in 1911 in Larderello, Italy. This facility expanded into major production in the 1930’s and continues to generate power to the present day.
Geothermal power plants produce long-term stable revenues and provide continuous base load power, often at or above 95% capacity. Depending on the size of the resource, geothermal power plants can be as small as 100 kW or as large as 1000 MW.
Today, there are several types of power plants used to convert hydrothermal fluids into electricity: Steam Condesing type which uses dry steam, double flash and binary. Steam condensing plants are best for high temperature systems and they can be single or double flash systems. A binary system is best for relatively low temperatures where a secondary fluid is heated by the geothermal fluid through heat exchangers and produces steam to turn the turbines for power generation.
GDC anticipates to use the latest technologies to utilise all the produced energy in a cascaded manner up to temperatures of below 100 oC. GDC will also make use of potable well-head generating units which will be used for power generation before the major plants are constructed.