Last updated: 21 July 2026
SolarWiedza, accessible at vacivi-lolamu.info, is a free educational portal providing information about photovoltaic energy systems for residential property owners in Poland. The content published here is intended solely to explain concepts related to solar energy, Polish government subsidy programmes including Mój Prąd, the net-billing system introduced in 2022, photovoltaic system sizing principles, and regional irradiation data as it relates to return on investment. Nothing published on this website constitutes financial advice, legal advice, engineering advice, or a recommendation to purchase any product or service. Nothing on this website constitutes an offer, solicitation, or invitation to enter into any commercial transaction.
By accessing and browsing this website, you accept these Terms of Use in full. If you do not accept these terms, you should not use this website. These terms are governed by the laws of the Republic of Poland. Any disputes arising from use of this website are subject to the jurisdiction of the courts of Poland. These terms apply alongside, and do not replace, any applicable consumer protection laws that may apply to your use of the site.
The information on this portal is provided for general educational purposes only. Regulatory frameworks governing photovoltaic installations and subsidy programmes in Poland change over time. The Mój Prąd programme has passed through multiple editions and the rules differ between editions. The net-billing mechanism introduced by the amendment to the Renewable Energy Sources Act (Ustawa o odnawialnych źródłach energii) may be subject to further legislative change. Readers are strongly encouraged to verify all information about subsidy eligibility, grant amounts, application processes, and billing arrangements directly with the relevant official authorities, including the National Fund for Environmental Protection and Water Management (NFOŚiGW) at nfosigw.gov.pl and the Energy Regulatory Office (Urząd Regulacji Energetyki, URE) at ure.gov.pl.
Irradiation data referenced on this portal is sourced from PVGIS, the European Commission's Joint Research Centre photovoltaic geographical information system. This data represents modelled historical averages and does not constitute a projection of future solar energy generation from any specific installation.
All text, graphics, layout, and design elements on this website are the property of the operator of SolarWiedza or are used with appropriate permissions. You may read and print content from this website for personal, non-commercial educational purposes. Reproduction, redistribution, or republication of content for commercial purposes, in whole or in part, without written permission from the operator is not permitted. Linking to pages on this website is permitted provided the link does not misrepresent the nature or content of the linked page.
SolarWiedza does not sell, install, or supply photovoltaic panels, inverters, batteries, or any other solar energy equipment. We do not act as an agent, broker, introducer, or affiliate for any solar energy company, installer, or financial product provider. Nothing on this website should be interpreted as a referral to, or endorsement of, any commercial entity. If you choose to contact an installer, manufacturer, or financial institution based on information you have read here, that is a decision made independently by you, and SolarWiedza bears no responsibility for the outcome of any such engagement.
To the fullest extent permitted by applicable law, the operator of SolarWiedza accepts no liability for any direct, indirect, incidental, consequential, or punitive damages arising from your use of, or inability to use, this website or its content. This includes, without limitation, any losses arising from reliance on information about subsidy programmes, billing systems, or irradiation data published here. The operator makes no representation that the website will be available without interruption or error. Links to external websites, including government portals, are provided for convenience and do not constitute endorsement. The operator is not responsible for the content of external sites.
These Terms of Use may be updated at any time. The date of the most recent revision is shown at the top of this document. Continued use of the website after any revision constitutes acceptance of the updated terms. If you object to any change, the appropriate course is to discontinue use of the website.