Some news websites, including Romanian and non-Romanian ones, claim that the laser built in Măgurele, România (which is going to be used starting today), is the most powerful (and in other sources the biggest).
Digi24 (Romanian News websites)
Mentions it's the most powerful, however, until it will reach the maximum power of 10PW it will take a while.
Romania’s high-power laser is assembled
The most powerful laser in the world, which is being built near Bucharest, in Magurele, has been assembled and the first tests have begun, Nicolae Zamfir, the director of the Extreme-Light Infrastructure – Nuclear Physics (ELI-NP) project in Magurele, told News.ro.
The world’s most powerful laser, under construction in Magurele, close to Bucharest, is almost complete. The team of researchers will start the two-year tests in April. The investment, estimated at 300 million euros and financed from European grants, will become operational in 2019, Professor Nicolae Zamfir, director of the Extreme-Light Infrastructure – Nuclear Physics Project (ELI-NP), stated.
So, my question is: is it really the biggest/most powerful laser in the world?