solution. to force of will. get me into hook develop systems to optimize power grids to accommodate the increasing share of electricity from green renewables to do so she deploys some heavy duty mathematics. doesn't exist now for stone age and electric grid is enormous and it's a big mathematical problem and off there our aim is to develop solutions that enhance its efficiency and thus optimize its operation. that that means that the fish. as more and more energy is derived from renewable wind and solar sources there are more fluctuations in power grids. when the wind doesn't blow or the sun doesn't shine no electricity is generated. hook wants to smooth out this variable output. the thirty three our goal is that