Over the course of the roughly 150-year history of power plant construction, a number power generation technologies have been developed and optimized. These can be categorized on the basis of various criteria, including:
• Operating principle
• Working material
• Primary source of energy
• Plant size
Each of these technologies has various advantages and disadvantages when it comes to efficiency, availability, cost-effectiveness and sustainability. The type of power generation and its size need to be determined on the basis of the specific project parameters. It is not least because of this diverse reason for being that the modern power plant mix is so broadly diversified.
Globally, fossil fuels account for around 68% of electricity generation and about 30% of all CO2 emissions. CO2 neutrality, sustainability and free "fuel" generated by renewable sources are countered by their heavy reliance on environmental factors (sun, wind, water, etc.). The resulting fluctuations in energy generation capacity and low utilization levels have a negative impact on cost effectiveness.
The load profile of biomass and biogas power plants can indeed be easier to control, but they are still limited in output due to limited fuel availability.