Follow the blog by RSS.
No account, no email, no tracking. Your reader checks the feed and new posts arrive on their own — and we never learn who you are.
The feed address
Copy this into any feed reader:
https://www.energyacademyproject.com/blog/feed.xml
Opening the raw feed shows XML — that is what a feed looks like to a machine. Browsers no longer render it as a page; a feed reader does the rendering for you.
If you have never used a reader
A feed reader is an inbox for websites. You add addresses like the one above, and it collects new posts from all of them in one place, in order, without an algorithm deciding what you see. Feedly, Inoreader, NetNewsWire and Thunderbird all read this feed; so does almost anything else that says "RSS".
What you will get
One technical post at a time, each with the sources it was built on. No mailing list, no promotion, and nothing you did not ask for. If you would rather be told by email when a course opens, that is a different thing and it lives on the courses page.