Twisted bilayer graphene (TBLG) is a new and versatile platform to realize the effects of strong Coulomb interactions as the misorientation between the graphene lattices profoundly affects the electronic structure of the combined moiré system. While the graphene layers decouple electronically at large angles (> 5 degrees), new electronic bands emerge when the angle is decreased, including nearly flat dispersion at the magic angle of 1.1 degrees that have been shown to harbor superconductivity, magnetism, and other manybody phases. In addition to direct electronic transport, thermoelectric properties are also highly sensitive to the electron-correlations, and often manifest in a departure from the well-established Mott semiclassical framework. In this seminar, I shall present the measurement of thermoelectric power in TBLG over a wide range of misorientation angles. We have shown that thermoelectricity in TBLG at large angles (> 5 degrees) is determined by electron-phonon scattering by the layer-breathing modes of phonons that manifest in a novel phonon drag effect at sub-nanometre length scale. At moderate angles (2-5 degrees), the thermoelectricity can be described by the semiclassical Mott relation. At low angles (<2 degrees), however, we observe a strong departure from the semiclassical description, which is most pronounced at the half-filling of the underlying moiré lattice, and persists up to temperatures as high as 40 K. In accordance with the strong enhancement in the electronic interactions at half-filling of the lowest band, our experiments provide a new route towards probing the novel interaction-driven effects in TBLG.