Tag Archives: explosion

Here comes the sun: explosion in solar power beckons Updated for 2026





Is solar power the technology of the future? It is certainly the fastest-growing energy generation technology in the UK.

By the early 2020s, according to a new report, it will be cost-competitive with gas and coal power. If so, the goal of having unsubsidised renewable energy is in sight.

The report, by Berlin-based think tank Thema1, concludes that this is possible without radical technology improvements or similar step changes. This somewhat disagrees with similar studies, which tend to point to the next big thing as being just around the corner.

There are lots of exciting developments in the laboratories but to make a real difference they need time – more than the 10-year time frame in Thema1’s forecasts, so their report is right not to factor them in.

Bright hopes

The majority of new technologies focus on the photovoltaic (PV) module itself, promising higher power output per unit (by using graphene or nanotechnologies) or much reduced production costs (using novel materials like organic solar cells).

Higher rates of converting light into electricity (‘efficiencies’) are always welcome in new PV devices, but their viability depends on the production costs. It is possible today to produce cells that can convert as much as 46% of the sun’s power into electricity, but costs render these commercially unfeasible. The incumbent technology, wafer-based silicon PV modules, converts about 22% of sunlight – at a fraction of the cost.

On the other hand, there is a lot of excitement around technologies such as organic solar cells that are less efficient but have much reduced costs. But this approach tends to shift the balance of costs from the module to the other system components such as mounting structures and can make the system more expensive.

To be commercially viable, these devices need a minimum efficiency of about 10%-12%. This recently led to the demise of virtually all thin-film silicon manufacturers, for example, which struggled to get the double-digit efficiencies in cost-effective production times.

The reality is that the road from laboratory cell to a full-size module is surprisingly difficult and slow. This can be seen when looking at current polysilicon thin-film technologies and how long it took them to come to their current competitive position.

There is no reason to believe that other technologies will be much luckier.

The missing ingredient – political will

Having said this, the Thema1 report is right to say that PV can achieve the costs required to survive – without subsidies, and without any step change in technology. All it needs is the political will.

If governments offer sufficient subsidies in the short term, solar will cut costs just by doing things better. This was the underlying idea of solar subsidies all around the world in recent years.

Yet Thema1 suggests that all we now need to do is incrementally reduce these subsidies, and by 2020 we will have learned how to do things at the market price. This is not completely impossible, but there are some major caveats.

The reductions to UK subsidies of recent years are in fact one of the biggest issues in the industry at present. There were step cuts in funding that incentivised developers to rush through solar projects before cut-off dates, which resulted in installation gluts. This has been detrimental for the quality of installations, resulting in higher operation and maintenance costs and thus higher energy costs.

Governments might argue that subsidy reduction has happened each year and is therefore foreseeable, However, this ignores the fact that these ‘cliffs’ result in a rushed building phase to meet the deadlines.

Reductions typically occur in April – so most building happens in the first quarter of the year, when the weather affects ground conditions and can drive up costs. Changing this hard funding cliff to a softer decline and shifting the timing to later in the year may actually make a noticeable difference in system costs.

The cost of connections is another major issue in the UK, especially with larger developments. The connection cost is sometimes nearly as expensive as the system itself – clearly rendering the investment impossible.

This may be down to weaknesses in the grid and should be addressed on a national scale. All new technologies for producing electricity have required major grid investment, so saying such moves are too expensive for solar is a bit of a smoke screen.

Time of day pricing could optimise PV production profile

Solar PV has the problem that the amount of power it produces varies during days and seasons. One of the most talked-about solutions is to include local electricity storage, which certainly could make solar more competitive provided it can be done reliably and at low cost. But this is may not be required in the medium term.

One reason is that people make the mistake of looking at technologies in isolation. There have been studies in Germany that indicate that this variability can be offset by using wind and solar together, for example. One would need to look at the combinations for the UK to see if this is true in this country as well.

It is also worth pointing out that subsidies are paid to renewable electricity irrespective of the time of generation, although it is more valuable to have an even production throughout the day – with no strong midday peak.

If rates were redistributed to include a timing element, it could be a way of cutting the system cost of PV energy without having to improve the technology itself, as developers adjusted the orientation of their panels to maximise revenue rather than gross production.

But the strongest factor that has the power to make or break solar power is the political support – or lack of it. PV still does have an amazing cost-saving potential through technological progress – as well as through measures like those mentioned above.

But all those together and you have a future that looks very sunny indeed. It is no exaggeration to say that incentive-free solar really could be on the horizon.

 


 

Ralph Gottschalg is Professor of Applied Photovoltaics at Loughborough University.

This article was originally published on The Conversation. Read the original article.

The Conversation

 




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Oil palm explosion driving West Africa’s Ebola outbreak Updated for 2026





The growing Ebola virus outbreak not only highlights the tragedy enveloping the areas most affected but also offers a commentary on they way in which the political ecology in West Africa has allowed this disease to become established.

The narrative goes that the virus appeared spontaneously in the forest villages of Guinea in December 2013. But this is debatable given that there is evidence of antibodies the Ebola virus in human blood from Sierra Leone up to five years before.

Previously only one case of Ebola had been reported in the region, and it was the Ivory Coast strain of the virus. The strain detected in the blood samples is of the more virulent Zaire strain of Ebola, the same strain responsible for the current epidemic.

After months of very little concerted action it’s clear that the disease is now seriously in danger of spreading out of control.

The real drivers of Ebola in West Africa – poverty and oil palm

The global health community has declared it a crisis of international importance, which has led the host nations to implement draconian preventions strategies, tantamount in some places to martial law in terms of surveillance, quarantine, border controls and other logistical aspects of control. But this is too little, too late.

There are several mechanisms through which the virus may have emerged, and it is unlikely that this latest outbreak was spontaneous.

It is poverty that drives villagers to encroach further into the forest, where they become infected with the virus when hunting and butchering wildlife, or through contact with body fluids from bats – this has been seen with Nipah, another dangerous virus associated with bats.

The likelihood of infection in this manner is compounded by inadequate rural health facilities and poor village infrastructure, compounded by the disorganised urban sprawl at the fringes of cities.

The virus then spreads in a wave of fear and panic, ill-conceived intervention and logistical failures – including even insufficient food or beds for the severely ill.

Take for example the global palm oil industry, where a similar trend of deep-cutting into forests for agricultural development has breached natural barriers to the evolution and spread of specific pathogens.

The effects of land grabs and the focus on certain fruit crop species leads to an Allee effect, where sudden changes in one ecological element causes the mechanisms for keeping populations – bats in this case – and viruses in equilibrium to shift, increasing the probability of spill over to alternative hosts.

Palm oil’s relentless march at the expense of forests and health

This is not unheard of; the introduction of fruit tree crops in cleared forests and agricultural expansion in Malaysia was associated with the emergence of Nipah virus. Bats feeding on fruit trees infected pigs in pens, which provided a vector for the virus to humans.

Another example is with vector-borne diseases such as the Japanese Encephalitis, a virus carried by wild birds which expanded its range due to growing rice and pig farming.

Chikungunya and Dengue Fever viruses exploited deforestation for secondary epidemiological cycles, which increased at the forest edge until the virus was able to adapt to secondary hosts and expand globally.

Certainly the complexity of the agro-ecological changes in West Africa warrant scrutiny. Guinea’s new agriculture is in an early stage of development, identified by the World Bank as the highest investment potential for industrial agriculture.

As global markets shift – and tariffs and taxes on multinational companies are removed, farmers with small land holdings are faced with a choice: either sell off or scale up to meet the competition. Forests are one of the first casualties.

A breakdown of traditional governance

Alongside this subtle effect is the dismantling of traditional governance, violence under colonial, neo-colonial and more recent kleptocratic governments and the economic movements of people towards urbanisation.

Such turbulence, poverty, the influx of refugees from neighbouring wars and crumbling health systems have all created an ecosystem in which the natural friction that prevents Ebola from gathering pathogenic momentum has been all but eroded.

Any international response can do little to remedy these contributing factors. In fact the response has been little more than a recognition of the complete failure of neo-liberal development strategies to contain the virus.

The ‘success’ of the Ebola virus is fundamentally based on the sociological factors and population biology of those it infects. But the data required to test the hypothesis – detailed records about what people eat, where they go and how they interact – is presently unavailable.

Instead research has focused on virus hunting, and with little success: more than 40,000 samples have not yet conclusively determined where the natural reservoir of Ebola lies.

All the while, the socio-ecological factors that are critical to the spread of any disease are ignored.

 


 

The report:Did Ebola emerge in West Africa by a policy-driven phase change in agroecology?’ is published in Environment and Planning.

Richard Kock is Professor of Wildlife Health and Emerging Diseases at the Royal Veterinary College. He received funding from DFID to explore gaps and opportunities in the treatment or prevention of zoonoses in emerging livestock systems. Funding is current from EU through BBSRC on an emerging livestock viral disease in Africa – specifically PPR virus in wildlife populations.

This article was originally published on The Conversation. Read the original article.

 

 




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Oil palm explosion driving West Africa’s Ebola outbreak Updated for 2026





The growing Ebola virus outbreak not only highlights the tragedy enveloping the areas most affected but also offers a commentary on they way in which the political ecology in West Africa has allowed this disease to become established.

The narrative goes that the virus appeared spontaneously in the forest villages of Guinea in December 2013. But this is debatable given that there is evidence of antibodies the Ebola virus in human blood from Sierra Leone up to five years before.

Previously only one case of Ebola had been reported in the region, and it was the Ivory Coast strain of the virus. The strain detected in the blood samples is of the more virulent Zaire strain of Ebola, the same strain responsible for the current epidemic.

After months of very little concerted action it’s clear that the disease is now seriously in danger of spreading out of control.

The real drivers of Ebola in West Africa – poverty and oil palm

The global health community has declared it a crisis of international importance, which has led the host nations to implement draconian preventions strategies, tantamount in some places to martial law in terms of surveillance, quarantine, border controls and other logistical aspects of control. But this is too little, too late.

There are several mechanisms through which the virus may have emerged, and it is unlikely that this latest outbreak was spontaneous.

It is poverty that drives villagers to encroach further into the forest, where they become infected with the virus when hunting and butchering wildlife, or through contact with body fluids from bats – this has been seen with Nipah, another dangerous virus associated with bats.

The likelihood of infection in this manner is compounded by inadequate rural health facilities and poor village infrastructure, compounded by the disorganised urban sprawl at the fringes of cities.

The virus then spreads in a wave of fear and panic, ill-conceived intervention and logistical failures – including even insufficient food or beds for the severely ill.

Take for example the global palm oil industry, where a similar trend of deep-cutting into forests for agricultural development has breached natural barriers to the evolution and spread of specific pathogens.

The effects of land grabs and the focus on certain fruit crop species leads to an Allee effect, where sudden changes in one ecological element causes the mechanisms for keeping populations – bats in this case – and viruses in equilibrium to shift, increasing the probability of spill over to alternative hosts.

Palm oil’s relentless march at the expense of forests and health

This is not unheard of; the introduction of fruit tree crops in cleared forests and agricultural expansion in Malaysia was associated with the emergence of Nipah virus. Bats feeding on fruit trees infected pigs in pens, which provided a vector for the virus to humans.

Another example is with vector-borne diseases such as the Japanese Encephalitis, a virus carried by wild birds which expanded its range due to growing rice and pig farming.

Chikungunya and Dengue Fever viruses exploited deforestation for secondary epidemiological cycles, which increased at the forest edge until the virus was able to adapt to secondary hosts and expand globally.

Certainly the complexity of the agro-ecological changes in West Africa warrant scrutiny. Guinea’s new agriculture is in an early stage of development, identified by the World Bank as the highest investment potential for industrial agriculture.

As global markets shift – and tariffs and taxes on multinational companies are removed, farmers with small land holdings are faced with a choice: either sell off or scale up to meet the competition. Forests are one of the first casualties.

A breakdown of traditional governance

Alongside this subtle effect is the dismantling of traditional governance, violence under colonial, neo-colonial and more recent kleptocratic governments and the economic movements of people towards urbanisation.

Such turbulence, poverty, the influx of refugees from neighbouring wars and crumbling health systems have all created an ecosystem in which the natural friction that prevents Ebola from gathering pathogenic momentum has been all but eroded.

Any international response can do little to remedy these contributing factors. In fact the response has been little more than a recognition of the complete failure of neo-liberal development strategies to contain the virus.

The ‘success’ of the Ebola virus is fundamentally based on the sociological factors and population biology of those it infects. But the data required to test the hypothesis – detailed records about what people eat, where they go and how they interact – is presently unavailable.

Instead research has focused on virus hunting, and with little success: more than 40,000 samples have not yet conclusively determined where the natural reservoir of Ebola lies.

All the while, the socio-ecological factors that are critical to the spread of any disease are ignored.

 


 

The report:Did Ebola emerge in West Africa by a policy-driven phase change in agroecology?’ is published in Environment and Planning.

Richard Kock is Professor of Wildlife Health and Emerging Diseases at the Royal Veterinary College. He received funding from DFID to explore gaps and opportunities in the treatment or prevention of zoonoses in emerging livestock systems. Funding is current from EU through BBSRC on an emerging livestock viral disease in Africa – specifically PPR virus in wildlife populations.

This article was originally published on The Conversation. Read the original article.

 

 




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