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Essays on the Russian electricity and capacity market

Pipkin, Igor
Doctoral thesis
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URI
http://hdl.handle.net/11250/2496961
Date
2018-05-03
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  • Doctoral theses (HH) [60]
Abstract
During the past decade the Russian power sector has undergone a dramatic reform. This

has created a need for better understanding of the drivers and development of the sector.

This dissertation describes the functioning of the Russian power market since 2006 by

focusing on price formation, market power and the main regulatory obstacles for

competition.

Paper I focuses on time regularities in Russian power prices and compares these for the

Siberian and the European zones. A set of distinct time regularities is revealed and

discussed: “Day-of-the-week pattern”, “Weekend pattern” and “Time-of-the-day

pattern”. The magnitudes of the price differences and time lag between the zones raise

the question of extending the interconnectors between the zones. The persistence and

magnitude of time regularities in power prices in the European zone imply that

technologies that allow for flexibility, either on the supply or demand side, can be

profitable.

Paper II tests for market power in Northwest Russia using the Bresnahan–Lau

framework by estimating residual demand and supply curves for thermal producers. I

find that price mark-ups are close to 7–8% on average for the hours between 10 am and

9 pm and 2–3% for the remaining hours of the day. The residual demand curve elasticity

is relatively high during peak hours. In addition, demand from Finland/Baltic states and

Center FFZ24 have different profiles, such that total demand is most elastic during peak

hours and least elastic during the periods of rapid change in consumption. The increase

in natural gas prices was reflected directly in electricity prices in Northwest Russia in

the analysed period. The domestic prices for natural gas are expected to increase to the

level of European net-back prices, and given that natural gas will still be the main fuel

in electricity production, this price increase will also be reflected in electricity prices.

The objective of Paper III is to take into account the mathematical formulation of the

Russian power market in the calculation of concentration measures and investigate the

role of transmission constraints using the more detailed framework of the transmission

constrained residual supply index (TCRSI). The analysis supports the previous findings

of high market concentration in the Russian power market, but for different reasons. The

adjusted HHI is below 1400 on average for all price zones and UESs and the adjusted

RSI shows that there exist pivotal generators for more than 5% of hours in the analysed

period only in two of 21 free-flow zones. Nevertheless, the TCRSI reveals that market concentration is critical for most FFZs in Russia in the UC auctions, day-ahead (DAM)

and capacity markets. Market concentration decreases the higher is the share of hydro

producers and transmission capacity to the neighbouring regions in the Russian power

market in general and in addition depends on the share of fixed generation in the DAM.

Paper IV investigates the main challenges and obstacles to competition in the Russian

power market, especially regarding the role of the SO. The transmission constraints

between the European and Siberian zones forced by the SO led to enormous

subsidization of the Siberian zone by customers in the European zone in the DAM. In

addition, must-run generation forced by the system security constraint and demand for

heat affects competition in the capacity market and the UC auctions, which lead to

distortions of DAM. The linear demand curve for capacity by price zone provides

incentives to exert market power, price cap constraints the potential profits of

generators, whereas the lower bound given by the total installed capacity reduces the

incentives for competition.

On the basis of these findings, I present the following policy recommendations:

facilitate consumer response to variation in electricity and capacity prices and invest in

flexible technology on supply or demand side; upgrade the existing transmission

capacity to discourage the exercise of market power and to deal with the supply security

concerns; introduce competitive pricing of heat and fuel (natural gas and coal).
Publisher
Norwegian University of Life Sciences, Ås
Series
PhD Thesis;2016:04

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