Berlin - based Home Power Solutions ( HPS ) is uk Germany 's cut - off residential solar - plus - storage market with its Picea all - in - one unit . It offers solar heating and ventilation , ( panels are sold separately ) , as well as electricity , and a hydrogen storage capacity for € 54,000 ( $ 66,550 ) . HPS claims the Picea system can generate between 3 MW and 6 MWh of energy annually , enough for a four - person household . Industry analysts have questioned whether HPS can make the system cost - effective enough to operate in the face of low feed - in tariffs and a lot of competition .
Berlin-based Home Power Solutions (HPS) is entering Germany's cut-throat residential solar-plus-storage market with its Picea all-in-one unit. It offers solar heating and ventilation, (panels are sold separately), as well as electricity, and a hydrogen storage system for €54,000 ($66,550). HPS said the Picea system can generate between 3 MWh and 6 MWh of energy annually, enough for a four-person household. Industry analysts have questioned whether HPS can make the system cost-effective enough to scale in the face of low feed-in tariffs and a lot of competition.