We introduce new families of determinantal point processes (DPPs) on a complex plane C, which are classified into seven types following the irreducible reduced affine root systems,Their multivariate probability densities are doubly periodic with periods (L, iW ), 0 < L, W < ∞, i = √ −1. The construction is based on the orthogonality relations with respect to the double integrals over the fundamental domain, [0, L) × i[0, W ), which are proved in this paper for the RN -theta functions introduced by Rosengren and Schlosser. In the scaling limit N → ∞, L → ∞ with constant density ρ = N/(LW ) and constant W , we obtain four types of DPPs with an infinite number of points on C, which have periodicity with period iW . In the further limit W → ∞ with constant ρ, they are degenerated into three infinite-dimensional DPPs. One of them is uniform on C and equivalent with the Ginibre point process studied in random matrix theory, while other two systems are rotationally symmetric around the origin, but non-uniform on C. We show that the elliptic DPP of type AN−1 is identified with the particle section, obtained by subtracting the background effect, of the two-dimensional exactly solvable model for one-component plasma studied by Forrester. Other two exactly solvable models of one-component plasma are constructed associated with the elliptic DPPs of types CN and DN . Relationship to the Gaussian free field on a torus is discussed for these three exactly solvable plasma models. *