Economic development
Non-renewable energy sources – what are they, what disadvantages do they have, and do they have a future?
Non-renewable, or so-called traditional, energy sources have for decades been the foundation of energy systems around the world. Coal, crude oil, and natural gas are resources that, despite the growing popularity of alternative energy sources, still play a key role in the energy systems of many countries. This situation makes the energy transition, which will help free the global economy from fossil fuels, increasingly urgent. So, what is worth knowing about non-renewable energy sources?
Who is a Virtual Prosumer? Settlement Rules in 2025
Using a photovoltaic installation grants the user the status of a prosumer. However, the current provisions of the Renewable Energy Sources Act distinguish between different types of renewable energy prosumers. As of July 2, 2025, in addition to individual, tenant, and collective prosumers, the virtual prosumer model also comes into effect. Who exactly are these users of photovoltaic systems, and what sets them apart from a "regular" prosumer?
Environmental audit – what it is and how to conduct one
An increasing number of businesses are looking for ways to implement eco-friendly, zero-emission solutions in their daily operations. On one hand, such actions are driven by current legal requirements. On the other, by adopting green solutions, a company strengthens its image as a responsible market participant that cares about the environment. How can an environmental audit help you in this regard?
Cogeneration fee – what it is and how it affects your electricity bill
On your electricity bill, you’ll find many different charges. In addition to the amount for actual electricity consumption, customers also pay various distribution fees. Alongside the RES (renewable energy) fee, quality fee, capacity fee, and two types of network charges, there’s also the cogeneration fee. What is it, and how is it calculated?
Electricity production in Poland – how can the carbon footprint of the energy sector be reduced?
Planning global energy and energy security requires countries to develop so-called energy mixes. This refers to the structure of energy production and consumption, taking into account the energy carriers and methods of generation. For many years, Poland has been known for an energy mix dominated primarily by coal. Are these trends changing? What does the structure of electricity production in Poland look like?
Three-phase electricity – is it a more eco-friendly solution for households and businesses?
Access to electricity is necessary to use any device, whether it’s a kettle or an industrial machine. At the stage of designing a building’s electrical installation, it becomes necessary to choose between a single-phase and a three-phase system. How do they differ from each other? And is three-phase electricity more eco-friendly?
Solar Energy – how does It work and why Is it worth investing in?
Solar energy is one of the fastest-growing areas of renewable energy. It is inexpensive, maintenance-free, and at the same time generates real profits while requiring relatively small financial outlays. Its importance for businesses, as well as for individual consumers, is steadily increasing, as the numbers clearly show. In 2023, the total global capacity of photovoltaic installations exceeded 1,400 GW. Read on to find out why investing in solar energy is worthwhile!
Symbols on an electricity meter – what they mean and how to read them
Electricity meters are measuring devices essential for determining how much electricity has been consumed at a given point of use. Over the years, the technologies used in this field have undergone significant changes. Read on to learn about the different types of electricity meters and how to read the symbols on an electricity meter.
Energy Storage – What Subsidies Are Available and Who Can Benefit?
Energy storage systems are especially important when generating energy from renewable sources. These devices are used to store previously produced energy, which can later be used when it is needed most. Energy storage is crucial for maintaining the stability of electricity supply and can be applied in households, housing communities, businesses, and many other settings. Various types of subsidies and financial support are available for the construction of energy storage systems.
Unit of electric current – what is an ampere and how do we measure It?
Electric current is the orderly flow of electrons moving through a conductor under the influence of electric forces. For devices connected to the power grid to operate properly, the current supplied must meet specific parameters. One of the key values used to indicate the “quality” of electricity is its current intensity. But what exactly is the unit of electric current?
When was electricity discovered? The history of its discovery and the development of electric power
Most of us no longer realize that life without electricity today would be practically impossible. Yet humanity only learned to harness electric power in the 19th century with the invention of the first electric cell, even though we were aware of the existence of atmospheric discharges much earlier. Who, then, discovered electricity—and when?