Hi
@J2397,
I was about to suggest our far STEM MSc courses, but I see someone has beaten me to the punch!
Far STEM is geared towards people in exactly your position, with degrees in STEM-related subjects outside of engineering itself, such as maths, physics or - in your case - economics. Normally they consist of a year of running you up to speed with the basic engineering principles, followed by a year carrying out your MSc. This can be done either as an individual dissertation or as an MSc by research, and can be done full or part time.
Most of the info will be in the link that
@Student-95 posted, but if you have any further questions about it then feel free to ask away.
Hope that helps
Theo