Measuring and estimating if the overhead powerline is <20' up from the ground. Hazelnut has a mature height of 15-18'. The powerline appears to be a little bit under 20' (considering 4x height of the shovel as the threshold) so there should be enough room for the hazelnut. The existing trees that will be part of the hedge the hazelnut is in are in some cases already much higher than the hazelnut will ever be, and in any case the powerline should be tightened up..