CREATE TABLE solar (
  period_start       TIMESTAMPTZ      PRIMARY KEY,
  pv_yield_kwh       DOUBLE PRECISION NOT NULL,
  inverter_yield_kwh DOUBLE PRECISION NOT NULL,
  export_kwh         DOUBLE PRECISION NOT NULL,
  import_kwh         DOUBLE PRECISION NOT NULL,
  charge_kwh         DOUBLE PRECISION NOT NULL,
  discharge_kwh      DOUBLE PRECISION NOT NULL,
  revenue_eur        DOUBLE PRECISION NOT NULL
);