Category: BESS

Analysis and practical insight on energy storage, PV and the Polish renewables market.

BESS

2026-08-15 Jerzy Kuzminski

Sodium-Ion Batteries in Energy Storage Systems

Introduction On June 22, 2026, in Munich, CATL — the world’s largest battery manufacturer — unveiled TENER Sodium, an energy...

BESS

2026-07-18 Jerzy Kuzminski

Who Is Really Behind Your Energy Storage System?

Introduction On 16 June 2026, the largest battery energy storage system in Europe was connected to Poland’s national grid —...

BESS

2026-06-08 Jerzy Kuzminski

Grid-Forming in BESS Projects: What It Really Means

The Supplier Form and the Checkbox That Changes Everything We increasingly encounter the same situation: an investor receives a BESS...

BESS

2026-05-26 Jerzy Kuzminski

Insurance for BESS Project

Introduction Most investors treat BESS project insurance as the last item on the pre-energisation checklist — something like registering a...

BESS

2026-05-03 Jerzy Kuzminski

UC84: Grid Connection Revolution — Part 2. Retroactivity and other changes

Introduction In the first part of this article I covered the grid connection block of UC84: the shortening of grid...

BESS

2026-04-26 Jerzy Kuzminski

UC84: New Grid Connection Rules for BESS and Renewables in Poland

Introduction On 15 April 2026, Poland’s Journal of Laws published the Act of 13 March 2026 amending the Energy Law...

BESS

2026-04-12 Jerzy Kuzminski

The Balancing Market and BESS Certification in Poland — A Practical Guide for Investors

Introduction Poland’s ancillary services market has reached an inflection point. The total value of FCR, aFRR, mFRR, and RR reserve...

BESS

2026-03-11 Jerzy Kuzminski

Financing Energy Storage in Poland: How to Finance a BESS Project in 2026

Introduction In December 2025, Poland’s National Fund for Environmental Protection and Water Management (NFOŚiGW) announced the results of its energy...

BESS

2026-03-01 Jerzy Kuzminski

NIS2 and Cybersecurity in BESS Projects: New Obligations for Investors in Poland

Introduction The NIS2 Directive (EU 2022/2555) has now been transposed into national law across EU Member States, fundamentally changing the...

BESS

2026-02-08 Jerzy Kuzminski

BESS + PV: Why Hybrid Projects are the Future of Poland’s Renewable Energy Market

Introduction 2025 brought Poland’s renewable energy market a brutal economic lesson. According to data from EC BREC Institute of Renewable...

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