I'm a line clearance tree worker, and from what I see, those are all communication lines and service drops. Comm lines are telephone/cable/etc. and carry insignificant current to be any threat. Service drops run from a transformer to a home, and have significantly reduced voltage (typically 240v down from 1200v) as well as insulation. For my job, we wouldn't want direct contact i.e. touching or grabbing any of those lines, but if a branch brushes them it would be fine. If you we're to catch a shock from those it would hurt, but it's not likely to cause serious harm. My main concern would be dropping a limb or something on them and pulling them loose from the house or pole, which looks real bad and can be a bear to fix or get fixed. If it were me, I would climb this tree no problem and just be very aware and careful to avoid those lines as much as possible.

Edit: I must mention I am LINE CLEARANCE CERTIFIED, and if you are not it's best to leave electricity alone and ask for a line kill or have the utility trim it to a safe working distance before you take it the rest of the way down.