A Nuclear power plant as a target for terrorists sounds nice as a movie plot, but in practice it sound as a lot of work for much less results.
If they wanted to go after the power infrastructure, a hydrpower dam are generally just guarded with fences and cameras, has built in weak points, and the destruction they bring causes whole nation to shut down. As a side effect they also bring down down stream transmission lines, shutdowns roads transportation on water, rail and road. A dam is basically a large number of nuclear bombs suspended above all the city that is down stream.
Going down in scale, natural gas deliveries, especially train and trucks, are rolling bombs. 22 tank cars has the equivalent energy of the Hiroshima bomb. Both trains and trucks goes through city centers. Those things are dangerous even without terrorist plots. Laws against this however has generally gone the other direction, with more freedom for train and trucks to transport this with less security.
If they wanted to go after the power infrastructure, a hydrpower dam are generally just guarded with fences and cameras, has built in weak points, and the destruction they bring causes whole nation to shut down. As a side effect they also bring down down stream transmission lines, shutdowns roads transportation on water, rail and road. A dam is basically a large number of nuclear bombs suspended above all the city that is down stream.
Going down in scale, natural gas deliveries, especially train and trucks, are rolling bombs. 22 tank cars has the equivalent energy of the Hiroshima bomb. Both trains and trucks goes through city centers. Those things are dangerous even without terrorist plots. Laws against this however has generally gone the other direction, with more freedom for train and trucks to transport this with less security.