Electrical contractor needs a logo design

This is what Wattwerx Electrical Services was looking for in their logo design

I'm looking for a new logo for my electrical contracting business. I am focusing on energy efficient products so something with green & blue may be a priority. My vehicle & workwear is black so designing the logo with that in mind would help.
I do lighting, power, switchboard, rewiring etc. Installation & maintenance.
I'm also looking to aim more towards a commercial market so it would be great to have it professional looking.

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