Around 10 wt% H(2) can be stored in a NaBH(4) based system at ambient temperature and atmospheric pressure. The hydrogen is released when water is added to an excess of NaBH(4)(s)/cobalt (s)/NaOH(s) powder mixture. The heat evolved during the reaction increases the temperature from 25 up to 140 degrees C as monitored by an IR camera. This permits the formation of NaBO(2)center dot H(2)O with x approximate to 1/2, thermodynamically stable above 105 degrees C, rather than NaBO(2)center dot 4H(2)O typically formed in excess water at room temperature. The presence of NaOH plays a crucial role in accelerating the reaction and increasing the temperature. (C) 2010 Professor T. Nejat Veziroglu. Published by Elsevier Ltd. All rights reserved.