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Tag: Energy

Hydrogen to Carbon Ratio of Global Primary Energy, 1860- 2009.
The ratio is expressed in fractional shares of hydrogen and carbon in average primary energy consumed.
04 Sep 2015 - by GRID-Arendal
Global Primary Energy Consumption and Global CO2 Emission
The figure on the left shows historical consumption from 1900 to 2009 and the GEA scenario’s projections for the period 2010 to 2050. The figure on the right shows global carbon dioxide emissions, both historical since 1...
04 Sep 2015 - by GRID-Arendal
Share in Total Primary Energy
Expressed in fractional market shares.
04 Sep 2015 - by GRID-Arendal
Population Using Solid Fuels (%), 2012
The use of solid fuels for cooking and heating continues in developed countries but is concentrated in the developing world, primarily in Africa and South Asia. These fuels are often the main source of household energy i...
27 Aug 2015 - by GRID-Arendal
Non-renewable energy resources in the Mediterranean
The active trade and distribution of oil and gas in the Mediterranean Basin, both on land and at sea, involves an extensive network of crude oil pipelines and gas line systems, mainly in the countries of production, link...
19 Nov 2013 - by GRID-Arendal
Moving towards a low carbon green growth
Energy e ciency in Asia selected countries
09 Mar 2012 - by Riccardo Pravettoni, GRID-Arendal
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 considerabl...
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 ana...
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 s...
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 defor...
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 doe...
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 spe...
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, particu...
29 Feb 2012 - by Riccardo Pravettoni, UNEP/GRID-Arendal
Pressures on Ugandan forests
Recently Uganda has outlined its national strategy for bioenergy to contribute to increasing the renewable energy mix from 4 to 16 percent by 2017. Alongside the energy challenge, the country faces a number of other diff...
01 Oct 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, m...
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, m...
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 natio...
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...
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...
29 Feb 2012 - by Nieves Lopez Izquierdo
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