Emissions Trading and Feed-In Tariffs: Do We Need Both?

When I started this blog some 3.5 years ago, the focus was on climate issues, particularly climate economics. More recently, however, I have neglected this topic a little. Fortunately, working at a research institute gives one the opportunity to learn a lot about things other scientists do–e.g., regarding the quite popular question whether the EU needs both emissions reduction and renewable energy deployment targets such as the 20-20-20 target. In other words: do we need an energy mix consisting, e.g., of emissions trading and feed-in tariff schemes? Or is emissions trading enough to reach policy goals? And, by the way, what are these goals? Continue reading


Nuclear Power or Fossil Fuels?, Revisited

More than two years ago I wrote here a piece about nuclear power. I critisized in it a commentary authored by Bjorn Lomborg, who argued that nuclear power is the all-environmentally friendly energy source. Then, I replicated a “green dogma” and wrote that

first, we cannot but abandon both [nuclear power AND fossil fuels], and, secondly, it is not necessarily true that we cannot afford a switch to renewables.

I do not longer think this is true. While still not sharing Lomborg’s and others’ enthusiasm about nuclear fission, I view it as the lesser evil. Continue reading

Shooting at the Earth

Last year, it was the 27th of September. This year’s Earth Overshoot Day, however, is the 22nd of August. Even though the methodology of the Global Footprint Network and similar projects is not completely unproblematic, the main message is clear: we are (ab)using the Earth’s resources in a way that is extremely unsustainable.

Today, August 22, is Earth Overshoot Day, marking the date when humanity has exhausted nature’s budget for the year. We are now operating in overdraft. For the rest of the year, we will maintain our ecological deficit by drawing down local resource stocks and accumulating carbon dioxide in the atmosphere.

In last years, there were reasons to hope: Copenhagen, Durban, Rio +20, the election of Barack Obama for president of the United States, China’s seeming calming down in Cancún, progress in the EU… Still, the overall progress was terribly disappointing. We are still massively burning (and even subsidizing) fossil fuels, consumption levels still aren’t dropping in the developed world (while they are steeply rising in its developing parts), our agricultural systems remain, in spite of some progress toward agro-ecology, unsustainable (possibly because of most environmentalists’ sticking to the dogma of “bad biotechnology“)… Shortly, we, i.e. humanity as a whole, still apparently don’t care about our own and our children’s future. We prefer short-sightedness and short-term pleasure over reason and long-term survival. We prefer keeping our eyes closed and denying on what appears inconvenient to us, instead of facing the truth that we have to change. Indeed, the way we live will have to change anyway, as a result of the pressures we put over the Earth system. Wouldn’t it be easier to stop shooting at the Earth on our own, instead of waiting until lifestyle changes will become inevitable?

Externalities of Energy Generation

Because of repeated discussions of this subject in comments under my posts, I decided to make a list of externalities for various energy generation forms. For this I chose the most popular energy generation methods as currently in use, i.e. I excluded for example geothermal and solar thermal energy. The list is hardly complete, so you are welcome to add further points in comments (also for further energy generation methods). Continue reading