To truly be green you would either do without or not go.
So then, the very greenest things you can do probably involve mass murder and industrial sabotage.
Further down the list, after those, you have leading an ascetic life of minimal consumption and minimal travel while devoting yourself to the right sort of political advocacy.
A bit further down is dying underground as soon as possible. But it's important to note that a small amount of advocacy, sabotage, or murder per year can make it a net positive for you to continue living.
Way below all that stuff that nobody wants to do (and who can blame them) are (a) living as a hermit in the woods eating only berries and mushrooms or (b) living a normal life with a normal career and making consumer choices like buying solar panels and electric cars when other people might buy various combustion machines.
If you're not counting your effect on other people, (a) is a clear winner. However, people's consumer choices do have an effect on the direction of the economy. And, if you take those effects into account, I honestly don't know how to decide whether (a) or (b) appears higher in the greenness ranking.
Maybe standard rooftop solar panels lifetime is too short as they are exposed to the elements all the time. But as a general rule? Seems wrong.
Solar panels will generate power for as long as there are cells still alive.
Both are recyclable, but batteries are specially so. Therefore, how can't they beat diesel, which also has to be extracted, processed, transported and finally burned (at low efficiency)?
Show this to a landlord and see what their reaction is.