Energy security is vital to the functioning of a country, particularly for its economy and the wellbeing of its people
Any country that is self-sufficient in energy resources will be secure in the sense that it will have the energy needed for its development
For less fortunate countries which rely on imported supplies, energy security depends on whether there is uninterrupted availability of energy at affordable prices
Risks
Physical - for example exhaustion of reserves or disruption
of supply lines by natural hazards such as earthquakes
Environmental - for example protests about environmental damage caused by exploitation of energy resources
Economic - for example sudden rises in the cost of
energy, or exhaustion of domestic supplies forcing
increased imports of higher-priced energy
Geopolitical - for example political instability in energy producing regions, disputes or conflict over sovereignty
of energy resources, or disputes over energy transmission by pipelines or cables across countries
Energy security has risen to the top of the agenda of many
governments, international organisations and businesses
The sustained growth in demand for energy has led to serious concerns
over the long-term availability of reliable and affordable supplies
Increasingly governments, industries and people are taking
a more protectionist view of their own sources of energy
Measuring energy security
Energy security is complex, but so great is concern about it that attempts have been made to measure it
The energy security index (ESI) is an attempt to measure energy security
ESI assesses the extent to which a country may look forward to a reliable and affordable supply of energy
Availability - The amount and longevity of each country's domestic oil and gas supplies and its level of reliance on imported oil, gas and electricity
Diversity - The range of
energy sources used in
meeting each country's
energy demand
Intensity - The degree to which the economy of each country is
dependent on oil and gas
Levels
of risk
ESI values range from 0 to 10
Between these values four categories or degrees of risk are recognised
Extreme risk - ESI values less than 2.5.
Most countries in this category are in
Northern Africa and Northern South
America. It also includes South Korea a NIC
High risk - ESI values 2.5 to 5.0. Such
countries are scattered across the globe
and include a number of developed
countries, most notably the USA and Japan
Medium risk - ESI values 5.0 to 7.5. A
widespread category in Europe, South and
Southeast Asia and Australia
Low risk - ESI values greater than 7.5. Qualifying countries include Canada, Russia, Norway
and the more stable middle eastern states - all are producers and exporters of oil and gas
Characteristics of risk
Heavy importers of oil and gas show high levels of risk
Countries with substantial reserves show low levels of risk, regardless of their own levels of consumption
Medium-sized development countries show low levels of risk, regardless of their own levels of consumption
The level of risk in the
large emerging economies
is similar to that in most
advanced countries
The relatively low level of risk in many African countries reflects
their low consumption or the existence of untapped resources
The USA has a higher risk than might be expected because its huge consumption and imports
overshadow its significant oil and gas resources and the fact that it uses a diverse range on energy source
UK energy security
In the 1980s and 1990s gas and oil from the North Sea meant that the UK was virtually self-sufficient in energy
Now North Sea production has started to decline and the UK became a net importer of gas in 2004
By 2020 gas imports could account for 80-90% of total demand
Coal, for example, currently accounts for about 15% of the UK's primary energy supply and most of it is imported
Coal is widely available from reliable
sources at competitive prices
The energy security of the UK has become a major political issue
The UK still has workable reserves of coal
It could also offset energy security concerns by increasing the use of coal to generate electricity
However, such a change would increase the UK's carbon emissions, which it has committed to reduce
The UK relies not just on coal but also on a mixture of oil, gas and other forms of power
In general terms, the UK needs to
minimise risks such as disrupted
supplies and escalating prices