hanzoh

drop table tmp_battery_sim;
create table tmp_battery_sim (start timestamp without time zone, energy_in_battery numeric, energy_not_consumed_from_grid numeric, savings_from_battery numeric);

do $$
declare
    -- Variables
    t record;
    vn_battery       numeric :=  0.0;
    vn_battery_prev  numeric :=  0.0;
    vn_grid_savings  numeric :=  0.0;