Hmmm, nobody seems to want to talk about this, but I'm not giving up.
I'm going to educate myself (and anyone else interested enough to read this) as best I can even if I have to do it alone.
I've discovered that bumping my power level up to 10 levels below beams and shields ncreases the effectiveness of the beams and shields; however, bumping the power up another 5 levels from there did nothing. I also discovered that with power setting 10 tech levels below that I needed to have my energy at full capacity to enjoy the full effectiveness of the beams and shields.
But that leaves me with a huge surplus of energy after the engagement even without any tech malfunctions regardless whether or not I've managed to penetrate the planetary shields. I don't understand why I have to have 100% energy to gain the full benefit of my beams and shields when it only uses maybe 20% of it.
Why is some 80% held back in reserve? It's useless because I have to go rearm myself with more fighters and torpedoes and top off my energy level again, anyway. I do wish this was more logical. I don't see how this makes any sense no matter how you look at it, from a mechanical perspective or even a fantasy role-playing perspective.
I'd like to see (in some future version) the power tech level supplying/storing only enough energy to power at full effectiveness the systems that use it at the same tech levels, so that 100% energy would be used unless the user OPTED for a power reserve either by energy allocation or extra power tech levels. User selected energy allocations would be very nice, as well as more logical, realistic, and strategy enhancing.
"Scotty, redirect all power to the weapons! Quickly! Ready phasors and arm torpedoes!"
"But CAPTAIN! What of our shields? If that thing hits us we canna' hope to survi..."
"DO IT NOW!"
"The captain has lost his marbles - I say we hold 80% power in reserve and allocate the remaining 20% 60/40 to beams and shields..."