Gabriel Ziembicki

Gabriel Ziembicki

I work on data and analytics for Poland's power markets and the energy transition. This is where I publish notes, charts, and longer pieces.

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Writing

2026

02 Jun

How much do Polish renewables actually earn?

A MWh of solar in Poland earns 283 PLN; a MWh of wind earns 414 PLN; the market average is 448 PLN. This post uses capture price and capture factor as tools to track how those numbers have moved since 2020, why wind and solar diverge, and what that means for project economics.
20 Jan

Poland's electricity demand: what temperature and ramps tell us about system stress

Demand in Poland follows a clean two-regime temperature curve with a comfort minimum at 16.5°C and a heating-side slope of 0.213 GW/°C. Residual-load P99 1-hour ramps reached 3.22 GW in 2024–2025 and will likely grow further with PV. A quantitative look at both.

2025

10 Jul

Poland’s solar generation boom and the decline in PV capture factor

As solar generation in Poland grows 10x in five years to 17.5 TWh, capture factors hit record lows of 50%. Exploring the challenges and strategies to keep solar both sustainable and profitable.