The importance of oil prices to the economy

Oil serves as a vital commodity that underpins much of global economic activity. Its price fluctuations can have widespread effects on production, transportation, and overall economic stability.

Why oil prices matter

• Role in production and transport - Oil is essential for manufacturing a wide range of goods, such as plastics, and for powering vehicles used in distribution.
• Impact on inflation - Rising oil prices can drive up the cost of goods and transport, leading to higher inflation. Advances in energy efficiency and declines in heavy industry in some nations are helping to lessen this effect.
• Price volatility - Oil prices can swing dramatically, with sharp rises and falls over short periods.
• Inelastic demand - Demand for oil shows little response to price changes because it is a crucial resource with few immediate alternatives.
• Inelastic supply - Supply is hard to adjust quickly due to the time needed for exploration and new production, and producers often limit output to avoid price drops from oversupply.

Factors affecting the demand for oil

Demand for oil is influenced by a variety of economic, environmental, and behavioural factors that can shift the overall quantity required at different price levels.

Economic factors

• Global economic conditions - During economic booms, demand rises as oil fuels increased activity, but it falls in recessions when activity slows.
• Speculation - Traders buy oil expecting price rises, which can boost demand, though losses occur if prices drop.
• US dollar value - Since oil is priced in US dollars, a weaker dollar allows buyers with other currencies to purchase more, increasing demand.
• Rising living standards - Improved incomes lead to greater consumption of oil-intensive goods and services.
• Growth in emerging economies - Rapid development in countries like China and India drives up global oil consumption.

Other factors

• Demand for oil-derived products - Higher need for items like plastics creates derived demand for oil.
• Availability of substitutes - Cheaper or more reliable alternatives, such as biofuels, reduce oil demand.
• Weather patterns - Cold weather in major consuming countries increases demand for heating.

Factors affecting the supply of oil in the short run

In the short run, oil supply can be disrupted or adjusted by immediate events and decisions, often leading to price changes.

Supply disruptions

• Supply-side shocks - Events like conflicts in oil-producing regions reduce supply, shifting the supply curve leftward. This raises prices and contracts quantity demanded.
• Effects on businesses - Higher oil prices increase costs for firms reliant on oil, potentially leading to price hikes and reduced demand for their products.

OPEC's influence

• OPEC's role - The Organisation of the Petroleum Exporting Countries (OPEC), including nations like Saudi Arabia and Venezuela, controls much of global supply.
• Production decisions - OPEC can reduce output to push prices up or increase it to lower prices.

Diagram: Effect of a supply-side shock

On a supply and demand graph:

• The demand curve (D) slopes downward.
• The original supply curve (S) slopes upward, intersecting D at equilibrium price P and quantity Q.
• A leftward shift to S₁ creates a new equilibrium at higher price P₁ and lower quantity Q₁.

Factors affecting the supply of oil in the long run

Over the long run, oil supply depends on resource availability, technological progress, and economic viability, allowing for more substantial adjustments.

Long-run supply factors

• Size of reserves - Larger remaining reserves support higher supply, though estimates of global reserves differ.
• Extraction costs - High costs may make some reserves uneconomical now, but rising prices and demand could justify extracting harder-to-reach oil and exploring new sites.
• Technological efficiency - Advances that reduce costs in extraction and refining increase supply by making production cheaper and more effective.

Examples of changes in demand and supply for oil

Real-world scenarios illustrate how shifts in demand or supply affect oil markets, often shown through diagrams to highlight price and quantity changes.

A large increase in the demand for oil

Emerging economies' growth fuels higher global demand, shifting the demand curve rightward. This can prompt producers to increase supply. The price signal encourages more production, but delays occur before new supply reaches the market. With inelastic demand and supply, prices rise significantly.

On a supply and demand graph:

• The supply curve (S) slopes upward.
• The original demand curve (D) shifts rightward to D₁.
• Equilibrium moves from price P and quantity Q to higher price P₁ and higher quantity Q₁.

An expansion of fracking for oil

Greater fracking (extending shale oil extraction) boosts supply, shifting the supply curve rightward and lowering prices while increasing quantity. Inelastic curves mean the price drop is larger than the quantity rise. Shale oil is not a perfect substitute for crude oil, so its impact on global prices may be limited.

On a supply and demand graph:

• The demand curve (D) slopes downward.
• The original supply curve (S) shifts rightward to S₁.
• Equilibrium moves from price P and quantity Q to lower price P₁ and higher quantity Q₁.