This set of 25 high quality line vector icons can be used in any field related to energy and ecology. If you are looking for simple/line vector icons, feel free to download them... you never know when you will need them.
If you're interested in licensing information, the good news is that you can also use them for your commercial projects. There is no need to buy a license.
We are grateful to Graphic Pear for providing this awesome set of free energy and ecology icons to our audience.