Heat can be always utilised for cooking food using solar cooker, heating water. As far as electricity generation without using solar cell is concerned, if you use parabolic convector for heating water continuous production of electricity during day time with steam is possible.

Thank you

A good article of wikipedia related to your question....

http://en.wikipedia.org/wiki/Solar_thermal_energy

The easiest way to produce electricity/energy from the sun without going through commercial solar technology, depends on the type of application area you have in mind. For example is the application domestic , agricultural, office, industry, research and development . In other words for what purpose do you want to use this (new) electricity /energy source?

Dear Dr. Ali Al-Bemani,

Residential solar power is in process of eliminating the use of fossil fuels. Residential solar power relies on photo-voltaic panels, (PV); The trend is to integrate the panels into the building using building-integrated photo voltaic (BPIV) system.

The payback on the installation cost will vary depending on incentives (government subsidy) and utility rates.

Many home appliances such as solar oven, chargers, food dehydrators are commonly available in global market.

There is a DIY kit for solar cells

by Daniel Nocera.

http://newsoffice.mit.edu/2011/artificial-leaf-0930

Regards,

Joachim

hi ali

You can use solar cells for the purpose of more complete information can be found at the following link

http://www.pveducation.org/pvcdrom/solar-cell-operation/solar-cell-structure

http://www.physics.org/article-questions.asp?id=51

http://energy.mit.edu/news/using-the-suns-heat-to-make-electricity/