Trevor Sikorski, head of natural gas, coal and carbon at Energy Aspects, says Europe can achieve its clean energy targets, but stresses that green energy subsidies are expensive.
The Ukraine crisis uncovered Europe's reliance on Russian energy. But as political leaders draw up a new plan for its energy future, will the targets be achieved?
In the U.K., the appetite for solar among some is becoming increasingly stronger.
The price of oil will not have much of an impact when it comes to the transition to clean sources of energy, according the one CEO.
CNBC takes a look at some of the most notable statements made at the 23rd World Energy Congress in Istanbul.