Risk Management on a Deregulated Electricity
Market. Inzemar
Rickenlund. IR, JAPRO Gruppcn AB,
Stockholm, e-mail ir@aprogruppen.se
1. Background
The
Nordic electricity market has, as a pioneer market, bow deregulated and is now a
competitive market, probably the most developed electricity market in the world.
Electricity has some unique characteristics; it is not storable and production
and consumption must equal every second throughout the year. The Nordic
electricity market is probably the most volatile market in the world, because of
the unsuitability of the supply and the demand curve. The supply curve is very
unstable since hydro production capacity vanes due to how much it rams and how
well water could be stored in water reservoirs. The demand curve is also very
unstable since many households use electricity for direct heating and the
consumption vanes due to changes in the weather. For example, the spot price on
electricity averaged 25 6re/kWh in 1996, while the average spot price in 1995
only was 11 6re/kWh. Moreover, there are substantial price differences over the
year (normally higher prices in the winter than in the summertime) as well
as over the day (normally how prices during peak load (daytime). Today
there exist both a spot and a future market for electricity contracts and there
is also a fairly liquid OTC-market for bilateral contracts.
2. Risk Analysis
The
players now compete and one very important task is risk analysis and risk
management. For an electricity trader the risk logic is very similar to any
other market, as long as he only buys and sells standardised fixed volume
contracts. For the trader we could use normal price and position risk techniques
for risk analysis and hedging. For a physical player (generator, supplier and
Large end users) however, the position of the portfolio is uncertain depending
on how much production capacity he will have during the period. In a similar way
the supplier who sells to end customers with take-and-pay contract, the
sales/consumption will very much due to weather (temperature). Especially if the
player is vertically integrated (both generation and supply) the risk logic
becomes very complex. in addition, some of the contracts on this market are very
complex and they need to be decomposed very carefully in order to fully
understand which the risks are. What also makes the risk logic interesting is
that different risk drivers effect the value of the portfolio differently
depending on the time horizon of the analysis period.
3. Risk Management
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