A STATCOM station comprising: a STATCOM arrangement comprising: a Modular Multilevel Chain-Link Converter, MMC, and a transformer arrangement arranged to be an interface between the MMC and an AC grid; wherein the MMC is connected in a wye topology with a plurality of converter arms, one for each phase of the AC grid, each arm comprising a plurality of chain-linked converter cells; wherein the transformer arrangement is arranged to interface each of the arms of the MMC with a respective phase (4a, 4b, 4c) of the grid, and arranged to for each of the converter arms produce leakage reactance resulting in reactance in series with the arm which obviates the need for a phase reactor connected in series with said arm; wherein there is no phase reactor connected in series with any of the converter arms; wherein the STATCOM station further comprises: a valve hall enclosing the MMC; a transformer tank enclosing the transformer arrangement; and a bushing for a conductor electrically connecting the MMC with the transformer arrangement, said same bushing passing through both a wall of the valve hall and a wall of the transformer tank. a STATCOM arrangement comprising: a Modular Multilevel Chain-Link Converter, MMC, and a transformer arrangement arranged to be an interface between the MMC and an AC grid; wherein the MMC is connected in a wye topology with a plurality of converter arms, one for each phase of the AC grid, each arm comprising a plurality of chain-linked converter cells; wherein the transformer arrangement is arranged to interface each of the arms of the MMC with a respective phase (4a, 4b, 4c) of the grid, and arranged to for each of the converter arms produce leakage reactance resulting in reactance in series with the arm which obviates the need for a phase reactor connected in series with said arm; wherein there is no phase reactor connected in series with any of the converter arms; a Modular Multilevel Chain-Link Converter, MMC, and a transformer arrangement arranged to be an interface between the MMC and an AC grid; wherein the MMC is connected in a wye topology with a plurality of converter arms, one for each phase of the AC grid, each arm comprising a plurality of chain-linked converter cells; wherein the transformer arrangement is arranged to interface each of the arms of the MMC with a respective phase (4a, 4b, 4c) of the grid, and arranged to for each of the converter arms produce leakage reactance resulting in reactance in series with the arm which obviates the need for a phase reactor connected in series with said arm; wherein there is no phase reactor connected in series with any of the converter arms; wherein the STATCOM station further comprises: a valve hall enclosing the MMC; a transformer tank enclosing the transformer arrangement; and a bushing for a conductor electrically connecting the MMC with the transformer arrangement, said same bushing passing through both a wall of the valve hall and a wall of the transformer tank. a valve hall enclosing the MMC; a transformer tank enclosing the transformer arrangement; and a bushing for a conductor electrically connecting the MMC with the transformer arrangement, said same bushing passing through both a wall of the valve hall and a wall of the transformer tank.