When does helpfulness become intrusion?

[LoveMyHome]

I moved into a property opposite a busy industrial estate with companies such as a Charity for survivors of domestic abuse. Every couple of weeks, the staff work really late, and whoever leaves last keeps entire offices (the size of a house) of bright, fluorescent lightbulbs on all night until the office hours the next day. iI's clear that staff have left tired and absent mindedly just left the lights on, but it must cause a huge increase of electricity bills. if it happened once a year I wouldn't bother but it happens unfortunately quite regularly and for that reason, am I being unreasonable to nip over the road and offered to take someone's number so they can come back and turn everything off to prevent paying for bright lights for 12 hours? I'd say it happens a couple of times a month at the very least and I think I'm being very Conservative about it.

Does the light intrude on you?

Put a sign outside the back door. “Turn out the lights!”
Honestly I think you need to consider WHY the lights are being left on… Maybe people leave them on because they feel unsafe walking to their cars. I would if I worked for a DV survivors charity. Lots of vengeful, incel-type men out there. (Also lots of survivors working for these charities too.) It’s probably not an accident.

Oh, I hadn't thought, for one moment, it would be deliberate. The lights don't intrude on me in anyway, because there are many streetlamps around the place that are equally bright, I was just more concerned that I have been recipient of their good work and hate to think that any of their money would be squandered down the drain with accidentally leaving lights on all night on a regular basis. This is not about how it impacts on me because it doesn't, but purely just wanting to save every penny they can because like all services they struggle for funding, and if I were running an office of any description would probably prefer lights to be off for 12 hours than on.