Not exactly accurate. When I started working professionally on the problem we thought it would be solved in a few years.... Problem is it is not particularly any closer today then they thought it was back then. Back then they thought it was 50 years away, they still think it's 50 years away. ...
Between 1966 and 1976 at the applied physic lab of JHU, I worked on the "CTR" (Controlled Thermo-nuclear Reaction) problem as controlling the Hydrogen-bomb for slow energy release was called back then. The US navy paid my salary as they (and we) at the start of CTR research thought it would be achieved in a few years.
The Navy wanted our group at APL/JHU to get real "hands on" experience with high temperature plasmas, but did not expect our group's five physic PhDs to solve the problem. They wanted us to be able to help them technically oversee the power plant of the first fusion powered aircraft carrier. They expected to let the contract for it around 1970.
(APL/JHU's main activity was / is to be a trusted, very knowledgeable group of physics professionals to help develop navy needed technology and then oversee industrial production of it. During WWII, APL invented the proximity fused artillery shell that saved the pacific fleet from destruction by Japan's Kama Kazi diving planes - shells did not need to hit the plane - just fly by near it.) Since then APL develop the 360 degree continuous scan and track radar with no moving parts you see on all Aegis ships, and was in charge of defending the fleet against supersonic sea skimming cruise missiles and many others, now even ICBMs with a modified version of the SAM-2 missile APL developed over few decades.
Back to CTR: as each year passed, more instabilities were discovered and the solution to the CTR problem seemed to move two year further into the future. When the Navy "threw in the towel" - killed further funding for our group, in 1976, we and they though perhaps the CTR problem would be solved by 2000.
The machines have grown so large and complex (and costly) that I am now convinced more than half of the US coal will have been used up before CTR electricity is economically feasible. (Read that as "never.") A coal fired steam boiler is very simple and cheap and with higher energy density than CTR's high vacuum "bottle" / systems, its supper-conducting very-strong magnets, etc. IMHO, what started out as very applied physics has turned into an expensive basic research program with little chance of ever being commercially applied. (That hope is used to justify the tax dollars, much like "save the family farmer" is used to justify billions for giant agro-businesses, like privately owned Cargill.)
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