{"id":57048,"date":"2026-09-29T16:06:48","date_gmt":"2026-09-29T15:06:48","guid":{"rendered":"https:\/\/ecoforest.com\/?p=57048"},"modified":"2026-09-29T16:06:48","modified_gmt":"2026-09-29T15:06:48","slug":"pellets-vs-olive-pits-vs-wood-chips-a-comparison-of-performance-price-and-maintenance","status":"publish","type":"post","link":"https:\/\/ecoforest.com\/en\/news\/pellets-vs-olive-pits-vs-wood-chips-a-comparison-of-performance-price-and-maintenance\/","title":{"rendered":"Pellets vs olive pits vs wood chips: a comparison of performance, price and maintenance"},"content":{"rendered":"\n

The biomass market in Spain offers several options for eco-friendly heating: wood pellets, olive pits and wood chips<\/strong>. Each has its own characteristics in terms of performance, price, cleaning and regulations. In this article, we provide a practical, up-to-date comparison for 2025<\/strong> to help you choose the most suitable biofuel for your home, boiler or stove.<\/p>\n\n\n\n

\n

If you want in-depth information about a single biofuel, take a look at our dedicated articles: Olive pits as a biofuel<\/strong> and Wood Pellets: the eco-friendly revolution in home heating<\/a><\/strong>. Here, we compare the three most popular options<\/strong> in Spain.<\/p>\n<\/blockquote>\n\n\n\n

Energy performance: LHV and HHV<\/h2>\n\n\n\n

The Lower Heating Value (LHV)<\/strong> measures the usable energy available after accounting for moisture. The Higher Heating Value (HHV)<\/strong> includes the heat released when water vapor condenses.<\/p>\n\n\n\n

Biofuel<\/th>Average LHV (kWh\/kg)<\/th>Average HHV (kWh\/kg)<\/th>Comments<\/th><\/tr><\/thead>
Wood pellets<\/strong><\/td>4,6 \u2013 4,9<\/td>5,0 \u2013 5,3<\/td>Highly consistent, ENplus A1 standards.<\/td><\/tr>
Olive pits<\/strong><\/td>4,1 \u2013 4,4<\/td>4,5 \u2013 4,8<\/td>Slightly lower performance than pellets, but excellent in adapted boilers.<\/td><\/tr>
Wood chips<\/strong><\/td>3,2 \u2013 3,8<\/td>3,5 \u2013 4,2<\/td>Highly variable depending on moisture, making proper storage essential.<\/td><\/tr><\/tbody><\/table><\/figure>\n\n\n\n
<\/div>\n\n\n\n
\"pellets<\/figure>\n\n\n\n
<\/div>\n\n\n\n

Conclusion:<\/strong> wood pellets<\/strong> are the most consistent and efficient per unit of weight. Olive pits<\/strong> come close in performance at a lower cost. Wood chips<\/strong> require suitable equipment and adequate insulation.<\/p>\n\n\n\n

Moisture, ash and clinkers<\/h2>\n\n\n\n

Biofuel quality directly affects consumption, cleaning and equipment maintenance.<\/p>\n\n\n\n

Factor<\/th>Wood pellets<\/th>Olive pits<\/th>Wood chips<\/th><\/tr><\/thead>
Moisture<\/strong><\/td>6\u201310% (ENplus A1)<\/td>8\u201315% (depending on supplier)<\/td>20\u201335% (highly variable).<\/td><\/tr>
Ash<\/strong><\/td>0,3\u20130,7%<\/td>2\u20133%<\/td>1\u20135% depending on cut and species.<\/td><\/tr>
Clinkers<\/strong><\/td>Very low<\/td>Moderate (high potassium \u2192 more clinkers)<\/td>Depends on the source; moderate risk.<\/td><\/tr><\/tbody><\/table><\/figure>\n\n\n\n

\ud83d\udca1 Less moisture = better performance and less maintenance<\/em>. Here, pellets are again the cleanest and most consistent option.<\/p>\n\n\n\n

Regulations and certifications<\/h2>\n\n\n\n
    \n
  • Pellets<\/strong>: they carry ENplus<\/strong> certification, which guarantees size, moisture, ash content and heating value. They are the most reliable standard and are easy to export.<\/li>\n\n\n\n
  • Olive pits<\/strong>: there is no equally widespread European certification, although UNE quality protocols have been developed in Spain. The key is to choose reputable suppliers that screen and dry their product.<\/li>\n\n\n\n
  • Wood chips<\/strong>: certifications such as Biomasud<\/strong> are recommended, guaranteeing moisture \u226425% and uniform particle size.<\/li>\n<\/ul>\n\n\n\n
    \n\n\n\n

    Prices in Spain (2025)<\/h2>\n\n\n\n

    Prices fluctuate by region, availability and subsidies. Average figures as of September 2025:<\/p>\n\n\n\n

    Biofuel<\/th>Average price \u20ac\/kg<\/th>Cost \u20ac\/MWh of usable heat<\/th>Availability<\/th><\/tr><\/thead>
    Pellets<\/strong><\/td>0,35 \u2013 0,40<\/td>70 \u2013 80<\/td>High, throughout Spain.<\/td><\/tr>
    Olive pits<\/strong><\/td>0,22 \u2013 0,28<\/td>50 \u2013 60<\/td>Excellent in Andalusia and Extremadura.<\/td><\/tr>
    Wood chips<\/strong><\/td>0,10 \u2013 0,15<\/td>35 \u2013 45<\/td>High in Castile and Le\u00f3n, Galicia and northern mainland Spain.<\/td><\/tr><\/tbody><\/table><\/figure>\n\n\n\n

    \ud83d\udc49 Olive pits and wood chips<\/strong> are clearly cheaper, but they require adapted boilers to avoid combustion and maintenance problems.<\/p>\n\n\n\n

    Impact on cleaning and service life<\/h4>\n\n\n\n
      \n
    • Pellets<\/strong>: less residue \u2192 longer service life for the burner, turbines and heat exchanger. Light weekly cleaning.<\/li>\n\n\n\n
    • Olive pits<\/strong>: more ash and clinker \u2192 frequent cleaning (every 2\u20133 days during peak season). Self-cleaning grates are recommended.<\/li>\n\n\n\n
    • Wood chips<\/strong>: require more storage space and almost daily cleaning. Suitable for medium- to high-capacity installations (farms, warehouses, public buildings).<\/li>\n<\/ul>\n\n\n\n
      \n\n\n\n

      When should you choose each biofuel?<\/h2>\n\n\n\n
        \n
      • \u2705 Pellets<\/strong>: if you want convenience, maximum efficiency and standardized certification (ENplus)<\/strong>. Perfect for single-family homes and users seeking low maintenance.<\/li>\n\n\n\n
      • \u2705 Olive pits<\/strong>: a more economical and sustainable option in producing regions (Andalusia, Extremadura). Ideal for properly adjusted multi-fuel boilers.<\/li>\n\n\n\n
      • \u2705 Wood chips<\/strong>: the best option for large properties, agricultural operations or shared projects<\/strong> (schools, industrial buildings). They pay off when storage space is not an issue and you want a low cost per MWh.<\/li>\n<\/ul>\n\n\n\n

        Conclusion<\/h3>\n\n\n\n

        The comparison of pellets vs olive pits vs wood chips<\/strong> shows that no single fuel is best for everyone<\/strong>; the right choice depends on your home, your boiler and the storage space available to you.<\/p>\n\n\n\n

          \n
        • Pellets<\/strong> offer the greatest convenience and performance<\/strong>.<\/li>\n\n\n\n
        • Olive pits<\/strong> are the most economical choice<\/strong>, especially in producing regions.<\/li>\n\n\n\n
        • Wood chips<\/strong> are hard to beat for large-scale projects with sufficient space.<\/li>\n<\/ul>\n\n\n\n

          At Ecoforest, we develop stoves and boilers adapted to each type of biofuel because we know that making the right choice starts with understanding the differences<\/strong>.<\/p>\n","protected":false},"excerpt":{"rendered":"

          The biomass market in Spain offers several options for eco-friendly heating: wood pellets, olive pits and wood chips. Each has its own characteristics in terms of performance, price, cleaning and regulations. In this article, we provide a practical, up-to-date comparison for 2025 to help you choose the most suitable biofuel for your home, boiler or 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