Small scale bioenergy applications - impacts on livelihood
Energy access is a primer for any type economic development. Nowhere is energy access a greater challenge than in areas and regions where the population lives in poverty. As illustrated, bioenergy can deliver considerable
positive social impacts to these communities. Small-scale bioenergy applications, such as generators fuelled by biofuels, can power many technologies which increase productivity and output, including water pumps to irrigate cro...
29 Feb 2012 - by Nieves Lopez Izquierdo
World bioenergy technical potential in 2050
Studies indicate that global bioenergy use is approximately 10 percent of the global energy mix, with a growth rate of 1.3 percent per year. Future projections for the supply of bioenergy are shown in the figure. The analysis is based on four scenarios for environmental targets, based on technical
potentials that differ depending on agricultural efficiency, production systems, technology and water supplies.
The scenarios span a wide range of gl...
01 Mar 2012 - by Riccardo Pravettoni, UNEP/GRID-Arendal
Energy costs in Bot Trang village, Cambodia
Over the past few years a small energy revolution has taken place in the village of Bot Trang in northwest Cambodia. Bot Trang is not on Cambodia’s national grid: in the old days Mr. Tham Bun Hak, a local farmer, would supply 80 households in the village with electricity from his diesel fired generator – but now it’s all run on jatropha. With the assistance of local NGOs and public partnerships, Mr. Tham developed a jatropha project that has made...
29 Feb 2012 - by Riccardo Pravettoni, UNEP/GRID-Arendal
Biofuels production and forest area variation in selected countries
Gains and losses in forest area vary globally, and the impact divers greatly between the various crops used for biofuels. Forest-cover is enhanced through aorestation or by natural expansion, and reduced either by deforestation or natural disasters which may prevent forest from naturally regenerating itself.
Forest degeneration is often caused by overexploitation of forest areas by humans, pests, disease or recurrent forest fires. Generally,...
01 Mar 2012 - by Riccardo Pravettoni, UNEP/GRID-Arendal
Additional people at risk of hunger in 2020
Biofuels have been criticised for causing food insecurity, but many other factors often play a far more significant role than biofuels. But rapid, largescale growth in biofuel production without sufficient safeguards does pose a risk for food security. This risk needs to be seen in the context of population growth, changing diets, slowing crop-yield improvements,and climate-change impacts on agriculture.
While much has been said about the risk...
01 Mar 2012 - by Nieves Lopez Izquierdo
Impacts of first-generation biofuels on agricultural prices
This figure outlines possible scenarios for the impact
of biofuels on agricultural prices and food security.
Although there are several factors that affect agricultural prices, including seasonal variation, market speculation,and extreme weather patterns, some biofuel development
scenarios indicate a relationship between agricultural
prices and biofuel production. Here, the scenario projects
that the largest price increase will be for cerea...
29 Feb 2012 - by Nieves Lopez Izquierdo
Land required to drive 100 kilometres
The graphic compares different liquid biofuels and alternative
drive systems such as an electric vehicle running on
electricity produced from wind power.
29 Feb 2012 - by Riccardo Pravettoni, UNEP/GRID-Arendal
Potential risks of energy crop expansion on land access
Poor land tenure security due to lack of appropriate
rules and processes, and biofuels production
encroaching on land used by pastoralists or for
cultural purposes affect local livelihoods and
access to land, particularly for poor rural people in
developing countries. This figure indicates various
measures which should be taken to mitigate this risk.
29 Feb 2012 - by Riccardo Pravettoni, UNEP/GRID-Arendal
Suitability by crop type in Uganda
Recently Uganda has outlined its national strategy for
bioenergy to contribute to increasing the renewable energy
mix from 4 to 16 percent by 2017.
Several biofuel crops have been identified, including
sugarcane, maize, oil palm and jatropha. A suitability
assessment of these crops illustrates that the
potential output from certain biofuel feedstocks
is high. Several projects are underway to help the
country meet their target.
To red...
01 Mar 2012 - by Riccardo Pravettoni, UNEP/GRID-Arendal
Potential biofuels output in Uganda
Recently Uganda has outlined its national strategy for
bioenergy to contribute to increasing the renewable energy
mix from 4 to 16 percent by 2017.
Several biofuel crops have been identified, including
sugarcane, maize, oil palm and jatropha. A suitability
assessment of these crops illustrates that the
potential output from certain biofuel feedstocks
is high. Several projects are underway to help the
country meet their target.
To red...
29 Feb 2012 - by Riccardo Pravettoni, UNEP/GRID-Arendal
Indirect land-use change induced by increased biofuels production
This figure indicates land requirements for biofuels production in response to current biofuels mandates. Depending on projected biofuels demand and available arable land, additional
land requirements may exceed a nation’s own resources, and hence have a spill-over effect on other countries and regions.
For example, studies indicate that most European
countries will not have sufficient available land
resources to produce the feedstocks requ...
29 Feb 2012 - by Riccardo Pravettoni, UNEP/GRID-Arendal
Potential biofuels production on abandoned agricultural land
Land-use planning is one strategy to manage
competition for land and, at the same time, reduce
environmental and social impacts. Assessment of
land suitability and availability can identify both
high-risk areas where land conversion should be
avoided, and areas where bioenergy production is
appropriate.
Restoring formerly degraded land and using underused
and/or abandoned land can boost output
without increasing pressure to convert la...
29 Feb 2012 - by Nieves Lopez Izquierdo
Estimated feedstock efficiency and environmental impacts
The negative consequences of iLUC have been hotly
debated. Recent debate has focused increasingly
on a pragmatic approach to reducing the need for
land, thereby reducing risks from direct and indirect
changes in land use. These approaches include:
• Using degraded and/or underused land where
the risks of increased GHGs and the loss of
biodiversity would be substantially lower.
However, the process for identifying such land
areas needs ...
29 Feb 2012 - by Nieves Lopez Izquierdo
Land required for biofuels by feedstock
When assessing the sustainability of biofuels within
the context of conservation, comparison questions
are important. What else can the land be used for?
One option might be conservation, whereas another
might be for a different production system. Which
production system is the most suitable and efficient
for the land being used? Here, the land-use and end-use
efficiency correlation is an interesting aspect
when seeking to determine the o...
29 Feb 2012 - by Nieves Lopez Izquierdo
Forest Carbon Sequestration
Converting land for biofuel production can cause
biodiversity impacts in the short-term, but such
conversion also aects the future resilience of natural
ecosystems. In an extreme case, complete deforestation
reduces the ability of forestland to regenerate and
absorb carbon in the future.
01 Mar 2012 - by Riccardo Pravettoni, UNEP/GRID-Arendal
Impact of land conversion on biodiversity
The impacts of land conversion on biodiversity may
be significant. The degree of impact relates to many
factors, including where and how the bioenergy
product is cultivated. This figure represent the short-term impacts of land conversion.
01 Mar 2012 - by Riccardo Pravettoni, UNEP/GRID-Arendal
Biofuels crops and biodiversity
Biofuels pose several environmental and social
risks. Therefore, to be truly a part of the green
economy, biofuels need to comply with a set of
safeguards along the entire production chain. Any
bioenergy development strategy must integrate
such safeguards at all levels, from policy to
investments and the project itself.
As impacts can be significant, they need to be
assessed from a number of angles, including:
• Direct and indirect lan...
08 Mar 2012 - by Riccardo Pravettoni, UNEP/GRID-Arendal