{"id":13670,"date":"2026-06-25T08:47:53","date_gmt":"2026-06-25T08:47:53","guid":{"rendered":"https:\/\/www.gbu.kyiv.ua\/?p=13670"},"modified":"2026-06-25T08:54:41","modified_gmt":"2026-06-25T08:54:41","slug":"rozrahunok-navantazhennya-vid-sonyachnyh-panelej-inzhenernyj-pidhid-do-bezpeky-vashoyi-ses","status":"publish","type":"post","link":"https:\/\/www.gbu.kyiv.ua\/en\/rozrahunok-navantazhennya-vid-sonyachnyh-panelej-inzhenernyj-pidhid-do-bezpeky-vashoyi-ses\/","title":{"rendered":"Load Calculation for Solar Panels: Engineering Approach to the Safety of Your SPP"},"content":{"rendered":"

Load Calculation for Solar Panels: Engineering Approach to the Safety of Your SPP<\/span><\/h2>\r\n

Installing solar panels is an investment that should work for decades. However, house or business owners in Kyiv and across Ukraine often forget one key aspect \u2014 the calculation of the load from solar panels on the roof’s load-bearing structures. Many believe the weight of photovoltaic modules is insignificant, but engineering practice proves that without prior mathematical modeling, SPP installation can turn into a dangerous experiment threatening the integrity of the entire building.<\/span><\/p>\r\n\r\n

Get a consultation<\/a><\/div>\r\n\r\n

Why Visual Inspection is Not Enough<\/span><\/h2>\r\n

When you mount a solar power plant (SPP), you add more than just the weight of the panels to the roof. Together with mounts, profiles, and ballast systems (if talking about a flat roof), a substantial mass is added. Furthermore, engineering calculation must account for:<\/span><\/p>\r\n

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  1. Snow load. Panels hinder the uniform shedding of snow, creating local zones of “snow pocket” accumulation. Building codes provide limit values for different regions of Ukraine: south \u2014 \u2248 80\u201390 kg\/m\u00b2, central regions \u2014 \u2248 120\u2013150 kg\/m\u00b2.<\/span><\/li>\r\n
  2. Wind pressure. During strong wind gusts, solar panels act as a sail, creating colossal uplift forces transmitted to the roof rafter system.<\/span><\/li>\r\n
  3. Dynamic oscillations. Structural vibrations arising during storm-force winds.<\/span><\/li>\r\n
  4. Additional operational loads arising during the installation and maintenance of the system.<\/span><\/li>\r\n<\/ol>\r\n

    GBU specialists conduct a full technical audit before granting permission for mounting. <\/span>More about technical roof inspection for SPP<\/span><\/a>.<\/span><\/p>\r\n

    How GBU Performs Calculations<\/span><\/h2>\r\n

    We do not rely on guesswork. GlobalBud Ukraine engineers use modern load modeling software that considers the climatic characteristics of your region (zoning for snow and wind load according to DBN V.1.2-2:2006 “Loads and Influences”). If the calculation shows that existing rafters cannot withstand the load, we develop a reinforcement project.<\/span> What is included in our calculations:<\/span><\/p>\r\n

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    1. Determining the total SPP weight (panels + mounts + ballast). Approximately, one solar panel can weigh 20\u201330 kg.<\/span><\/li>\r\n
    2. Verifying the sections of wooden or metal roof frame elements.<\/span><\/li>\r\n
    3. Calculating forces acting on fastening nodes.<\/span><\/li>\r\n
    4. Analyzing the strength safety margin of supporting walls and foundations (if necessary).<\/span><\/li>\r\n
    5. Assessing the actual technical state of load-bearing structures.<\/span><\/li>\r\n<\/ol>\r\n

      It is important to remember that post-war roof inspections in Ukraine have their nuances, as even visually intact structures may have lost part of their load-bearing capacity. <\/span>Order a professional roof inspection<\/span><\/a>.<\/span><\/p>\r\n

      Factors Influencing Roof Load-Bearing Capacity<\/span><\/h2>\r\n

      A common mistake is assuming that if there is enough space on the roof, the SPP can be installed without additional checks. In reality, roof load-bearing capacity depends on many factors:<\/span><\/p>\r\n