Energy Blog

Energy question of the week: How much electricity could be generated from ocean currents?

21.04.2010 | posted by Jan Oliver Löfken

Electricity has been generated from tidal power for decades. Large installations could supply entire towns and cities. However, tides are not the only forces moving water in our seas. Ocean currents also move huge amounts of water all around the globe. Is it worth exploiting this power source? read more

Energy question of the week: What makes a power grid intelligent?

08.03.2010 | posted by Jan Oliver Löfken

A closely-interconnected grid of power lines and wires 1.7 million kilometres in length and running from power stations to wall sockets delivers a reliable power supply throughout Germany. It has evolved and been maintained over decades, extended in leaps and bounds, and virtually no-one gives any real thought to the interplay between generator and consumer, power frequency and high voltages, sub-stations and transformers. Now, in response to the rising proportion of electricity generated from renewable sources, the term Smart Grid (the 'intelligent' power grid) is now coming into common parlance. Was, and is, our existing power grid really so 'dumb'? read more

Energy question of the week: How much electrical power can be harnessed from tides?

22.02.2010 | posted by Jan Oliver Löfken

Under the influence of the Moon's gravity, the water of Earth's oceans rises and falls twice a day. Powerful forces are at work all over the globe between every low and high tide – forces that can be harnessed to generate electrical power. Just how mature is the technology and what is the potential that tidal power stations could unleash? read more