I would tend to agree with ChrisGr31's assessment on this one. Primarily, the power company were alerted to the fact that low level flights were happening in this area - this created the scenario of such an incident being reasonably foreseeable thus requiring some measures to prevent it happening.
The fact that the damages awarded were so low would indicate that the Judge took into account the fact that the pilot was also a contributory in so far as he was flying lower than he should have been.
It would be interesting to know how costs were awarded.