Write a polite letter to a shop leaving their storefront window lights and tv screens on during the night. Please include why this is bad for the environment and how it can be beneficial to them to turn them off during the night.
Dear Sir/Madam

I regularly walk past your storefront windows late at night and I have noticed the bright lights and that all the TV screens are always turned on. If I may, I have a suggestion: dim or turn off the lights and turn off the TV's at the latest hours of the night. This is good for the environment and it will make up savings on your electricity bills.  You can automatically turn power on and off with for example plug-in timers or smart plugs. 
There are not many people walking by late at night and I don't think taking these steps will have much of an impact on your business.

I hope you will take my advice into consideration.

Best regards
XX
Thank you. Now can you give me a slightly less politely worded version?