Ambitions for solar energy
In the past few decades, solar energy (PV) has grown a lot; the number of applications has much increased and production has become much more large-scale. Costs have taken a dive, and dramatically so. The ambitions for solar energy are sky-high. Says Wim Sinke: ‘In the 40 years that I work in the solar field,
Green roofs
The Earth heats up; and in this process, towns are among the areas most hit. Buildings and streets tend to store incoming radiation. Towns urgently need to be turned greener, if only with the goal to keep them liveable. Green roofs are important agents in that process. They can lower ambient temperatures by 2oC, inside
Ecomimicry: enriching urban landscapes
Why are the ‘green’ areas in our cities often so uniform? Why are they ‘blandscaped’, to create virtually uniform green spaces that are devoid of local character or distinctiveness? Just attractive to look and easy to manage, but devoid of valuable biodiversity? We could do otherwise, by ecomimicry. Urban monocultures In The Conversation this week,
Meat alternatives on the rise
Around the world, meat consumption is on the rise. People eat more meat as they become more affluent. But meat alternatives are becoming popular. They are fashionable; and their environmental footprint is much lower than that of meat. Moreover, their quality is becoming better. Will they contribute to reaching the goals of climate policy? We
Solar and wind energy: increasing recognition
This month, before publication of their NZE2050 scenario, the International Energy Agency considerably upped its forecast for solar and wind energy. Even after the major upward revision already done in its World Energy Outlook 2020. Solar PV is now ‘the cheapest source of electricity in history’. And more pleasant surprises may be underway. A recent
Towards net zero carbon emissions
In an unprecedented move, the International Energy Agency (IEA) published its NZE2050 scenario this month: towards net zero carbon emissions in 2050. Required for a climate strategy that limits the rise of global temperatures to 1.5oC. NZE2050 marks a major IEA policy reorientation. The agency finally recognizes that solar and wind energy could become the
Cheap energy storage speeds up
Costs of producing renewable energy keep coming down; and technologies for cheap energy storage keep evolving. Therefore, the eternal problems with solar and wind energy appear to be more and more outdated (‘what to do if the sun doesn’t shine and the wind doesn’t blow’). In the past, we already devoted our attention to this
Renewables versus nuclear – a choice already made
The most important low-carbon energy sources, renewables and nuclear, compete for investment funds. But if we are not mistaken, the dice have already been thrown in this contest of renewables versus nuclear. Renewables have won. Although it might still take a decade or more for parties involved to agree on that. In two articles, we
