I was just watching a program on television showing how the method they use at the National Ignition Facility to attempt to achieve fusion is to fire extremely powerful lasers at a small pellet of fuel sitting in a vacuum at the center of a large 10 m diameter sphere. To people familiar with the design of the setup they have there, I ask: what is the mechanism by which they intend to collect the energy that would result when that pellet releases its energy?
There will be no attempt to utilize the energy released from fusion reactions at NIF. NIF's goal is to demonstrate that a sustained fusion reaction is possible. Such a demonstration is termed "ignition" and there is a good chance it will be achieved within the next three years.
The next step is a project called LIFE which involves a prototype power plant based on the inertial confinement fusion to be achieved at NIF. LIFE's goal is to assess the economic feasibility of such a power plant. LIFE will not be operational until the 2020s at the earliest.
The electrical production mechanism in LIFE would basically be the same as a fission power plant: use the heat from the fusion reaction to evaporate water into steam to power turbines. More specifically, they will use what's known as a Rankine cycle. See https://life.llnl.gov/life_design/electricity_production.php .