Electricity trading viability in Indian electricity exchange: A case of seasonal option strategies
Description
Commodities are generally classified into three categories: soft commodities, metals, and energy commodities. Risks associated with commodities vary across these categories and can adversely affect a firm’s financial performance through heightened price volatility. Producers of commodities—such as those in the mining, agriculture, and energy sectors—are primarily exposed to the risk of declining prices, which reduces revenue. In contrast, consumers of commodities—such as airlines, transport companies, clothing manufacturers, and food producers—face risks from rising prices, which increase input costs. Within the energy sector, particularly in electricity markets, price volatility is especially pronounced due to the unique physical characteristics of electricity. These include non-storability, uncertain and inelastic demand, and a steep supply curve. Unmanaged exposure to such price fluctuations can have severe financial consequences. With increasing volatility in financial markets and the associated risks of corporate failure, organizations have prioritized financial risk management strategies. One widely used approach is hedging, which helps mitigate exposure to price risk in electricity markets. In India, the electricity market is characterized by significant regional imbalances between supply and demand. Certain regions—such as the northern, western, and southern parts of the country—often experience power deficits, while others, including eastern and northeastern regions, may have surplus capacity. This mismatch necessitates active power trading. Since the introduction of reforms and the establishment of power trading as a distinct activity, the overall power deficit has declined significantly—from 7.7 percent in January 2006 to 0.9 percent in July 2017. However, the market is still relatively underdeveloped compared to global electricity markets. India currently operates two major power exchanges: the Indian Energy Exchange (IEX), established in June 2008, and Power Exchange India Limited (PXIL), launched in October 2008. Among these, IEX is the dominant platform and is therefore commonly used for market analysis. The exchange trades in several products, including the Day-Ahead Market (DAM), Term-Ahead Market (TAM), Renewable Energy Certificates (RECs), and Energy Saving Certificates (ESCerts). The DAM, where contracts are executed for delivery on the following day in 15-minute time blocks, accounts for the majority of trading activity and is particularly suitable for volatility analysis. This study examines the evolution of the Indian electricity trading market during the period 2008–2017, with the aim of assessing the feasibility of introducing futures and options markets for electricity. It also evaluates risk management strategies for spot price exposure using futures-based hedging. Although electricity options have long been implicitly embedded in power purchase and supply contracts, their explicit valuation and use as financial instruments are more recent developments. Electricity options, including call and put options, grant the holder the right—but not the obligation—to buy or sell a specified quantity of electricity at a predetermined price within a defined period. These instruments have payoff structures similar to those of options in financial markets and are commonly traded over the counter. They serve as effective tools for managing price risk, particularly for power producers and marketers, as electricity generation capacity can be viewed as analogous to a call option. The study further analyzes spot price movements for the period March 2016 to February 2017 to validate findings from earlier data. The analysis focuses on price evolution and evaluates equivalent contracts derived from synthetic option positions. These synthetic instruments, constructed using combinations of seasonal and short-term call and put options, replicate the costs and payoffs associated with hedging strategies. Results indicate significant seasonal variation in hedging costs. Contracts with maturities ranging from 135 to 270 days appear most advantageous for traders in the Indian electricity market. Among seasonal contracts, winter is identified as the most favorable period for contracts with maturities exceeding 30 days. The study also demonstrates that forward contracts can be effectively approximated using option-based strategies, yielding reliable results. The use of derivatives in electricity trading can significantly reduce hedging costs, provided a mature derivatives market exists. These strategies also offer flexibility, enabling market participants to revise decisions as market conditions evolve. Efficient allocation of resources over time in electricity markets requires robust price signals. These signals are conveyed through spot, futures, and options prices. While short-term spot price volatility exhibits stochastic behavior, it remains bounded. For long-term analysis, the assumption of constant volatility—as in the Black–Scholes framework—may be appropriate. Empirical evidence suggests that electricity prices often follow a random walk process. Strategic decision-making in electricity derivatives markets must account for contract duration, seasonal effects, and the structure of underlying transactions. By integrating various sub-contracts and optimizing contract maturity, traders can achieve more favorable risk–return profiles. Overall, the findings of this study suggest that the Indian electricity market shows promising potential for the development of derivatives trading. The analysis indicates that, with appropriate strategies, participation in the IEX day-ahead market can yield significant benefits for traders operating under conditions of price volatility.
Copyright Date
January 2017
Publication Date
1-1-2017
Keywords
Power industry, Electricity, Electricity exchange, Energy commodities, Electricity market
Conference
7th India Finance Conference, 20-22 December, 2017, IIM Bangalore
