Complex sentence: It is notable that 100% of the Swiss railway network is electrified:-the high proportion of energy generated through hydroelectric power and the lack of natural resources (such as coal and oil) help to explain why such a situation is strategically beneficial in Switzerland.
Split into simpler sentences: It is notable that 100% of the Swiss railway network is electrified. The high proportion of energy generated through hydroelectric power and the lack of natural resources (such as coal and oil) help to explain why such a situation is strategically beneficial in Switzerland.