A large segment of the industry consists of companies that generate or convert or distribute electric power. Electricity is forever in greater demand. Efficient use of power is always a major concern.
So by knowing about ways to extract the best efficiency, it gives you that much more value to any company you want to work for.
Since you wish to use your programming ability, figure out how that could interact with the greatest number of companies where you apply for employment.
If the company makes power supplies, then learn a lot about their product. Learn about ways to reduce size, cost, etc. Also the codes and regulations and standards.
If the company is an electric power station, then learn about grid operations. And the regulations, standards, etc.
If they make automotive electronics, then learn about powering items from a 12V system (or in larger vehicles it might be a 24V system), etc.
If they make batteries, etc.
If they make generators, alternators, etc.
Show the interviewer you know some details about what the company does, and show why you would be a good employee to have on their team.