Long-term corporate power purchase agreements (PPAs) are starting to change liquidity conditions across Central and South-East European electricity markets, according to Electricity.Trade analysis. A recent example is a 10-year solar contract in Hungary covering 430 GWh of generation. The agreement is between GoldenPeaks Capital and Hankook Tire & Technology.
Hungary solar contract details
The PPA is structured around a 30 MW solar portfolio. Electricity.Trade characterizes it as one of the larger corporate renewable contracts in Hungary to date. While the contracted annual volume is described as modest compared with Hungary’s total system demand, the analysis highlights that multiple similar deals can add up to a structurally significant effect.
Electricity.Trade says each corporate PPA removes baseload or peak-hour volumes from day-ahead liquidity. That change reduces the share of generation exposed to marginal pricing mechanisms. The analysis links this shift to how traded volumes and available supply interact during market sessions.
Impact on day-ahead trading during tight conditions
In trading terms, the growth of corporate PPAs can compress available merchant supply during tight hours. Electricity.Trade points to wind underperformance as a scenario where flexibility becomes more important for remaining merchant generation. On 24 February 2026, wind generation fell by -1,314 MW day-on-day.
The analysis also notes that pre-contracted solar output can tighten residual supply conditions during evening ramps. With a larger portion of solar generation contracted in advance, day-ahead outcomes can reflect reduced merchant availability at specific times. This affects how the market clears when demand ramps coincide with constrained supply.
Effects on forward markets and price sensitivity
Electricity.Trade further observes that PPAs can affect forward curve behavior. When industrial off-takers secure fixed-price renewable supply, their exposure to wholesale volatility decreases. As a result, demand for forward hedging instruments can be reduced.
This reduction in hedging demand is described as lowering liquidity in forward markets. Electricity.Trade also links it to higher price sensitivity to marginal changes in supply-demand balance. The analysis frames these effects as connected to how fixed-price contracting alters participation in forward trading.
Regional implications for price discovery
In Hungary, Electricity.Trade says corporate PPAs are unlikely to undermine price discovery because HUPX remains the regional price anchor. The analysis contrasts this with smaller markets where traded volumes may be more sensitive to structural changes in contracting.
Electricity.Trade cites Serbia and Montenegro, stating that similar agreements could reduce day-ahead traded volumes there. The same assessment notes that such reductions could amplify volatility in those markets. Electricity.Trade characterizes corporate PPAs as liquidity modifiers with structural consequences for wholesale pricing and arbitrage.
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