What do a small Italian village, a community of millionaires in Oregon and a town in Austria have in common? Nearly all of their electricity needs are supplied by renewable energy. They are by no means the only ones. A growing number of communities are working towards using only electricity generated by renewables.

One of the key problems with renewables is their intermittent availability. You can only generate energy from the wind when it is blowing, or from the sun when it's shining. Critics argue this is why we will never be able to rely on renewables for the majority of our electricity generation. But that criticism may soon be silenced.

This paper presents a new approach for transmission line protection using a time-frequency transform technique. The transform known as S-Transform (ST) is used for fault detection from the current and voltage signal at the relaying point.

This paper describes a practical study for obtaining UPS (Uninterrupted Power Supply) to the limited load centers of western Orissa.