Why 51%? Applicants get 30% “ordinary” subsidy already, leaving only 70% to be covered by their own funds. The additional 30% “RES subsidy” is applied to this remaining 70%, not the whole project amount. This makes the effective subsidy rate at (1-0.3)*0.3 + 0.3 = 0.51, or 51%. More: bit.ly/34Z3fjL (in Lithuanian)