It may sound like quite a broad question, but I have good knowledge of managing the use of gas, electric and water across an estate of circa 7.5k buldings as well as implementing BMS solutions and Energy saving technology. I also have experience in managing the ISO14001 certificate for the same business.
Is there a business idea in sharing this knowledge and experience, perhaps in website form, rather than an onsite consultant for example?
If you are truly confident that your services are in demand and need make some cool money thereof, then consider consulting services in that vertical. You can build your website, have a blog section of the website to promote your service and establish you're an authority in what you do. Leverage social for more brand awareness too. Where need be, consider advertising. You can either use your website/blog to attract customers and later meet them on site or you can render such service remotely too. Good luck.
Your knowledge in the form of Web Content can be valuable. If we put in professional creativity with analytical output . we can discuss to know more
Maybe you can sell energy saving sockets to those buildings for me and earn money that way as well as help the owners reduce energy consumption.
Mr Gallager You are actually in the right time your skills can be useful as a consultant to meet European legislation regarding energy usage. One area is to become an energy auditor for large buildings with AC etc and give them advice on reducing and meeting the european legislation .
use your knowledge to develop a product using IOT devices that will monitor energy usage and report instantly . Th building managers can use your data to reduce costs and improve utilisation
Since you're the one with domain expertise it's your job to find out what other people in the domain want to pay for but can't buy yet. Go talk to everyone you know and ask them "if you could wave a magic wand and improve anything about energy management, what would it be?" After you talk to a dozen people you should see a pattern emerge. This is called customer discovery. You can google it and read up. Starting with Four Steps To The Ephiphany or Startup Owner's Manual to get the broader context.