GreenEdge: Best in BESS - ENG

FCR, aFRR, and mFRR are three different products — not three names for the same thing. Each one works differently, has different technical requirements, a different revenue profile, and a different risk structure. A surprising number of people in this industry use these three acronyms interchangeably. That's an expensive misunderstanding when you're building a financial model or negotiatin...

In this episode we walk you through everything that stands between a commissioned BESS project and its first revenue from ancillary services: the regulatory structure of the Polish balancing market, the hardware certification requirements that are entirely specific to Poland, the IT infrastructure PSE requires, and the DUB qualification process itself — including where projects consistently get st...

You can have the right location, a solid grid connection agreement, a credible supplier, and an experienced EPC on the shortlist. None of that matters if the financing doesn't close. And the reason it doesn't close is almost always the same: the investor structured the project without understanding what the bank actually needs to see. In this episode I go through BESS project financing fro...

You have your permits, your equipment order, and your grid connection agreement. Now you need someone to actually build the thing. And this is where a lot of projects go wrong — not because of bad technology or poor financing, but because of a contractor selection process that wasn't designed to find the right partner. In this episode I cover the full EPC procurement process from both sides of...

On the 19th of February 2026, Poland signed the amended Act on the National Cybersecurity System — the Polish implementation of the EU NIS2 Directive. For BESS investors and developers, this is not an IT compliance story. It's a project risk story, which affects you whether your entity is directly regulated or not. In this episode: why the energy sector — including battery storage — is explici...

In September 2025, for the first time in Poland's history, battery energy storage systems were included on the SGU list — Significant Grid Users. If you are developing or financing a BESS project with a capacity of at least 10 MW and 40 MWh — this episode is for you. In this episode: what SGU is and where this obligation comes from; who ends up on the list and how that process works from the i...

You've developed your project, secured the permits, and now you need to buy the system. And this is where a lot of investors — including experienced ones — discover they weren't as prepared as they thought. The BESS supplier market is crowded, opaque, and the differences between offers that look identical on paper can be enormous in practice. In this episode, I walk through how the supplie...

Development is where most BESS projects succeed or fail — not on the construction site, but in the eighteen to twenty-four months before a single container arrives. In this episode, I walk you through the full development process for a utility-scale stand-alone project in Poland: site selection, land rights, zoning under the new General Plan regime, environmental decisions, grid connection under t...

On April 15, 2026, Poland published UC84 in the Journal of Laws — a comprehensive amendment to the Energy Law that fundamentally changes how grid connections work. The law enters into force on April 29, 2026. After almost a year of legislative work, numerous controversies, and Senate amendments, we have the final text. Time to explain what changed and what it means for BESS and renewable energy in...

C&I storage is not just small cabinet systems — we're talking about containerized solutions of several megawatt-hours that can fundamentally change how your business operates, with payback periods of three to four years for energy-intensive facilities rather than the seven to eight years typical in utility-scale projects. This episode covers the Commercial & Industrial segment: energy...

From the outside, a battery container looks simple — just a box. But what's inside determines whether your investment performs for fifteen years or starts causing problems after two. In this episode, we open up the container and examine every critical component: battery cells and chemistry, BMS architecture, power conversion systems, cooling and heating (critical for Polish winters), fire safe...

The first episode of the English edition of Best in BESS — a podcast for international investors and developers exploring the Polish battery energy storage market. Poland has issued grid connection permits for an estimated 70 GWh of energy storage. Over 400 projects applied for the NFOŚiGW subsidy program, and the first utility-scale BESS projects are finally going live in 2026. The opportunity is...