Calc Super Galaxy Gurren Lagann's engine power

Something that's been around for a while now, but I feel gets somewhat overlooked. Super Galaxy Gurren Lagann is stated to generate energy comparable to a microcosmos.
Later, Leeron comments that it's as if a galaxy is about to be born inside Super Galaxy Gurren Lagann.
Super Galaxy Gurren Lagann has power comparable to a galaxy being born. If the above isn't enough evidence, Final Drill outright confirms it;
(The relevant part)

Final Drill said:

[Super Galaxy Gurren Lagann] [Mecha/Episode 26] Super Spiral class gunman. The appearence of the transformation of Super Galaxy Dai-Gurren with enough energy to create a galaxy, as the spiral force was transmitted from Ark Gurren Lagann through the transcendental spiral engine from Gurren Lagann. Equipped with a Mega Vortex Cannon, it is protected by a spiral field that is intact even if hit by a planet.

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Super Galaxy Gurren Lagann can generate power enough to create a galaxy. Given that a lot of transformations are done through mass-energy (giga drills, regeneration, the Death Spiral Abyss), this should be likewise too. We'll use a low end of the Lesser Magellanic Cloud, a mid end of the Milky Way and a high end of IC 1101. The Lesser Magellanic Cloud has a mass of approximately 3,000,000,000 solar masses, the Milky Way has a mass of roughly 1,500,000,000,000 solar masses and IC 1101 has a mass of more than 100,000,000,000,000 solar masses. One solar mass is 1.989 X 10^30kg (or 1.98900e30kg).

(Low end)
M = 3,000,000,000 X 1.98900e30kg
= 5.96700e39kg

E = mc^2
= 5.96700e39 X 299792458^2
= 5.36287215e56/10^44
= 5.36287215 TERAFOE

(Mid end)
M = 1,500,000,000,000 X 1.98900e30
= 2.9835e42kg

E = mc^2
= 2.9835e42 X 299792458^2
= 2.68143608e59 /10^44
= 2.68143608 PETAFOE

(High end)

M = 100,000,000,000,000 X 1.98900e30kg
= 1.98900e44kg

E = mc^2
= 1.98900e44 X 299792458^2
= 1.78762405e61/10^44
= 1.78762405 EXOFOE

Final Results
Super Galaxy Gurren Lagann's engine power (low end) = 5.363 TERAFOE
Super Galaxy Gurren Lagann's engine power (mid end) = 2.681 PETAFOE
Super Galaxy Gurren Lagann's engine power (high end) = 1.788 EXOFOE