The Rainbow Warrior on route to Kingsnorth coal fired power station in Kent. © Kristian Buus / Greenpeace.

See all Rainbow Warrior tour updates or get them by email.

It’s quite a sight: under a wintry sun, a flotilla of Greenpeace boats is heading down the Medway, straight towards Kingsnorth power station. The Rainbow Warrior is leading the peaceful armada and, from up here on the bridge, I can see our rigid inflatable boats abreast of us and streaming out behind in a V formation.

A couple of minutes ago, John, our executive director, phoned E.on and told them that our peaceful flotilla will be arriving at midday. Here's the mp3 or click to play:

Our amphibious incursion has a serious and peaceful purpose. The boats are carrying dozens of campaigners who plan to board Kingsnorth’s 700-metre coal jetty and then walk through the existing coal plant site to the site where E.on wants to build the UK’s first new coal plant in 30 years.

The Rainbow Warrior in front of Kent Flats wind farm © Will Rose / Greenpeace.

See all Rainbow Warrior tour updates or get them by email.

Just a quick one to let you know that we've just left Southend pier and are heading towards Chatham, to pick up the leaders of the UK's most important development, faith and environment groups - including the Women's Institute, Oxfam, Tearfund and RSPB - representing four million people.

From Chatham, we'll be sailing towards Kingsnorth, where the directors will sign a declaration saying: "Four million strong, we say no to dirty coal power stations, and yes to a clean green renewable energy future". The declaration will then be taken to Kingsnorth by one of our inflatable boats and delivered by hand to E.on staff.

A screengrab from our virtual, climate-friendly town, EfficienCity

With the UK government apparently bending over backwards to stop renewable energy development at the moment, it's refreshing to hear some good news from elsewhere in Europe; the world's first commercial wave power farm has gone live in Portugal.

Just under a year ago, we revealed that Gordon Brown was planning to scupper the vital, and binding, European climate change deal to generate 20 per cent of energy from renewable sources by 2020.

A brouhaha ensued; EU leaders were so furious at the UK's underhanded shenanigans that a red-faced Brown had to explicitly re-commit to the target soon afterwards.

Well, leaked documents (pdf) show it's happened again. This time, the man weilding the wrecking ball is John Hutton, the Business Secretary with an inordinate fondness for coal and nuclear power.

More good news on the renewables front today: Al Gore has challenged the US to produce 100 per cent of its power from renewable sources in 10 years.

Gore has pitched his plan as the solution to not only climate change but also to high oil prices and energy insecurity - and as a way to keep the US economy healthy and to ensure national security.

A few of my favourite bits (the full text is here):

It's Weekly Geek time, and this week we're looking at micro-hydro power: a truly reliable, highly efficient, and extremely clean (it has no direct carbon emissions) way of generating electricity.

It needs no fuel but offers a constant supply of electricity which often increases in winter, along with demand. It has a long life cycle (typically 25 years or more). It can have low implementation and maintenance costs. And, unlike some large scale hydroelectric power schemes, it has minimal environmental and visual impacts.

This combined heat and power plant in Denmark is up to 95 per cent efficient

To celebrate our launch of EfficienCity, we're starting a new, weekly column for all the closet energy geeks out there. Every week, we'll take an in-depth look at one of the technologies we feature in EfficienCity - tidal power, wave power, wind energy, combined heat and power, micro-hydro power, anaerobic digestion, biomass and the rest. We'll also be looking at issues like baseload and the regulatory context for decentralised energy.

So remember to check back each Wednesday and, if you have any suggestions for energy solutions to climate change you'd like to see us cover, just post a comment at the bottom of this page and we'll try to slot it in.

New coal, new nuclear - the government here seems to be doing everything in its power to avoid facing up to the reality that our energy system is archaic, our energy policy is a disaster, and the new large-scale, centralised coal and nuclear power plants they want won't stop climate change or ensure energy security.

But at least we can glean hope from a more forward thinking European neighbour. Scientists have proved that Germany - which is already way ahead of us on renewables (14 per cent in 2007) - can power itself entirely by renewable energy sources. Completely. 100 per cent.