When electricity is available in clinics and small hospitals, electric oxygen concentrators are used. However, power supplies in developing areas are often unreliable. In the event of power failures, access to medical-grade concentrated oxygen is severed and the treatment of pneumonia becomes much less effective.

To combat pneumonia deaths during power failures we have developed a cheap and novel reserve for concentrated oxygen: the Low Pressure Oxygen Store (LPOS). While the power is on, excess oxygen from a concentrator is used to fill LPOS. When the power cuts out,  this oxygen is automatically released to the patients. LPOS will be able to provide oxygen to a child suffering from pneumonia for eight to ten hours.