In the absolute philosophical or even scientific sense, there is no such thing as sustainability. When we talk about sustainability, it is always in relative and comparative terms. As far as humanity is concerned, fossil fuel deposits are considered finite, in relation to our feeble temporal existence. The arduous replenishment process of fossil fuel, besides requiring certain unique conditions, resides deep in the geologic or even cosmic space-time, literally unimaginable by Homo sapiens, a creature that is of limited scope and a strong proclivity for self destruction!
For instance, certain members of this delicate and relatively complex species think nuclear power is viable and most sustainable, in the scheme of human existence. To start with, the element Uranium is not only finite (since it is just one element in our finite planet) but is also crudely used by humans. Due to lack of safe and effective converting technology, a whole lot of it is wasted. The current nuclear reactors are only glorified tea pots, kettles to boil water, nothing more!
Moreover, the process of nuclear fission (the one currently used to generate usable power) produces waste (radio-active materials) that are emphatically anti-life!
In the last few months the global price of oil has been declining, mostly as a result of the interplay between supply & demand as well as more nuanced collaborative political strategies of the world major protagonists. We will not go into the details of this topics. Our interest today is to point out the temporal opportunity that can be employed to help facilitate our general effort towards securing more green energy sources. We believe, instead of adjusting the retail price of fuel (that takes place every month in our country), the Ethiopian government should utilize the windfall differential to help it start, augment, etc. the development of more green or ‘sustainable’ energy projects, like hydro, wind, solar, etc. At the end of the day, the prevailing price reduction should not be used as an incentive for more consumption.
Let us look at a realistic scenario to further argue our case. Consider a likely situation where the Renaissance Project encounters cost overruns. How should we fund this likely price escalation? We reckon, instead of going to the global capital market (dangerous/expensive exercise even to resource rich countries Russia, Venezuela, etc.) to raise funds or even to our downtrodden beast (=human beast), the government can utilize this particular surplus to fill the funding gap. In some countries, (India & China) governments have actually increased fuel taxes so that consumers still pay the same old pump price (to compensate for market driven pump price decline.) Again, the idea being the windfall can be put to a better use (like more sustainable energy projects.)
In our global economic regime, which is very stupid and irrational, the whole logic of production and reproduction revolves around the blind and almost suicidal logic of capital and not necessarily that of human. For instance, the grave consequences of  burning fossil fuel are hardly appreciated by the unthinking economic system, at least in terms/manners that can make significant differences in the life of not only humans, but also all other life forms including the critical life- sustaining ecosystem. The useless conventions (COPS etc.) that are drummed up here and there are only noises to detract & distract the committed. As we have been saying all along; the beast must completely abandon the nonsense of the status quo and determinedly pursue the project of saving life and the planet on its own, without relying on the cynical shortsighted distractive established order.  
Let us look at one sickening behavior of the stupid system. Oil producing Arab kingdoms/ countries own significant shares in almost all the major vehicle manufacturers of the world, either directly through their various sovereign funds, private equity funds, etc. mostly fronted by their minion loyalists. Moreover, tentacles of the industry, distributors, etc. (wherever possible) operate under their fat and not so clean thumbs. Supporting gas-guzzling transport system across the world is the main strategic objective of many of the oil renteirs. All kinds of silly and climate impacting stunts are pulled everyday to further their polluting cause. Giving out expensive cars to mistresses, chauffeurs, butlers, shoeshine boys, etc. as well as flying solo in a wide bodied jet with a mistress or two, is another of the childishly decadent behavior promoted worldwide by the polluting entrenched interests. This world doesn’t belong only to these wasteful imbeciles, it belongs to all of us (the living) as well as posterity. Those abusing it as if there is no tomorrow (high carbon foot print per person) need to be incriminated!
Unfortunately, some countries like India & China still think the nuclear option is a viable and somewhat sustainable proposition; again, we beg to differ! The war in the African Sahel region (to some extent part of north Africa) is also about another resource war, which of course is hidden from the public eye by the nauseating MSM (mainstream media.) The resource in question is uranium. France is very dependent on nuclear energy and feels it has to secure uranium, by hook or a crook. When the Chinese signed a big contract to mine uranium ore in the region, all of a sudden instability, coups d’état, terrorism, pestilence and many other things started to pop up. What a coincidence!
Beware, unless we change our life style all together and very very soon, there will not be any future for humanity.Comfortable life should not be confused with imbecilic decadent life style. Luckily, the more active global youth has started to deconstruct the prevailing dangerous and archaic ideology perpetuated by the status quo via the likes of Hollywood, Bollywood, Wall Street etc. The call to divest from the fossil fuel industry is gaining ground worldwide. “The goal of the divestment campaign has never been to financially bankrupt the fossil fuel industry, the goal is to morally bankrupt them.” Jamie Henn ( Good Day!