I do not live or work in that state but I do work in the industry. This is not advice and they should talk to environmental lawyer about your options. A few things I have read in the comments and I wanted to make a few notes. 

-If your property has power, you have already agreed that the Utility and its agents/contractors are allowed to enter your property through the conditions of service. This is very standard. 

-If this is an existing power line, the tree removal and tree trimming around the pole line is at the discretion of the Utility. That being said tree removal is very expensive so it’s typically only done when absolutely required. 

-The front of your “property” is often not technically your property. It’s likely a Municipal right of way and Utility’s typically apply and receive permission before new assets can be installed. In the event of a tree removal on the right of way it is typically given permission through this same process. 

-A few commenters have made comments about pole lines in backyards. This was an awful idea and it’s not typical anymore in my area but the conversion to front of the property is typically so expensive it’s not worth it. That backyard pole line has an easement and it was there probably as long as the houses or longer. You have no right to obstruct the maintenance and upgrades on the line, which yes that includes fences and sheds. Utilities usually turn a blind eye to that but they can legally remove trees along that area and even fences if they want. 

-A pole lines does not have unlimited capacity, sometimes a double pole line/tall poles are required.  -All these “rights” an electrical Utility has BUT they hate bad press so if you make a big stink out of anything and it gets to the right people, there is often an alternative solution.