Hello,

Store electrical energy from Photvoltaic cell can be don by converting the electrical energy into Hydrogen.

The hydrogen can be used like normal feul in all ICE engines and also in fuel cell's to make again electricity.

I shell try to give You a few links where You can see howe this works.

http://www.ergenics.com/

http://www.hbank.com.tw/index.htm

http://www.sigmaaldrich.com/materials-science/material-science-products.html?TablePage=16375039

http://www.ergenics.com/page27.htm

http://thaiwater2gas.com/categories/Hydrogen-H19-Set/

http://www.alibaba.com/product-gs/213602538/QL_22000_hydrogen_equipment_1M3_H_electrolyzer.html

http://bjhaoyun.en.alibaba.com/product/269751816-50419699/hydrogen_storage_alloy.html

I hope You can find the time to lurn sommething aboud this and I want to say that I have the same idees like You poeples bud I'm living in Estonia and I try to do it all myself.

I know my live is to short to accomplish my dreams.

So greetings from an Belgian/Estonian freak.

Daniel.