{"id":554,"date":"2026-08-05T11:04:12","date_gmt":"2026-08-05T11:04:12","guid":{"rendered":"https:\/\/baarda.ch\/?p=554"},"modified":"2026-08-05T11:21:56","modified_gmt":"2026-08-05T11:21:56","slug":"for-what-percentage-is-solar-electricity-part-of-the-dutch-and-swiss-grid-electricity-mix","status":"publish","type":"post","link":"https:\/\/baarda.ch\/?p=554","title":{"rendered":"For what percentage is solar electricity part of the Dutch and Swiss grid electricity mix?"},"content":{"rendered":"\n

Gemini: Solar power makes up a significantly higher percentage of the electricity grid mix in the Netherlands than in Switzerland:<\/p>\n\n\n\n

Country<\/th>Solar Share of Grid Electricity Mix<\/strong><\/th>Primary Electricity Source<\/th><\/tr><\/thead>
The Netherlands<\/strong><\/td>~19% \u2013 21%<\/strong><\/td>Wind (~25\u201327%) & Natural Gas (~36%)<\/td><\/tr>
Switzerland<\/strong><\/td>~12% \u2013 13%<\/strong><\/td>Hydropower (~55%)<\/td><\/tr><\/tbody><\/table><\/figure>\n\n\n\n

Key Context & Differences<\/h3>\n\n\n\n
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  • The Netherlands (Roof & Ground PV Leader):<\/strong> The Netherlands has one of the highest per-capita installed solar capacities in the world, driven by widespread rooftop installations on residential and commercial buildings. Combined with wind energy (~25\u201327%), wind and solar now generate roughly half of all Dutch electricity.<\/li>\n\n\n\n
  • Switzerland (Hydro-Dominated):<\/strong> Switzerland\u2019s grid relies primarily on hydroelectric power (55%)<\/strong> and nuclear energy (24%)<\/strong>. While Swiss solar capacity is expanding rapidly to offset seasonal winter shortfalls and the planned phase-out of nuclear plants, it currently accounts for around 13%<\/strong> of generation.<\/li>\n<\/ul>\n\n\n\n

    (Note: These figures refer specifically to grid electricity generation<\/strong>. In terms of gross total energy consumption\u2014which includes road transport fuels and building heat\u2014solar accounts for roughly 5% in the Netherlands and 3\u20134% in Switzerland.)<\/em><\/p>\n\n\n\n

    Question: What is the best batterystorage, and how is it measured?<\/p>\n\n\n\n

    There is no single «best» battery storage system\u2014the best option depends entirely on whether it is intended for a residential home, an electric vehicle, or a massive utility grid.<\/p>\n\n\n\n

    However, for stationary energy storage (home solar backup and electrical grids), Lithium Iron Phosphate (LFP)<\/strong> is widely considered the best overall technology due to its balance of safety, lifespan, and lower cost.<\/sup><\/p>\n\n\n\n

    1. How Battery Storage Performance Is Measured<\/h2>\n\n\n\n

    Battery systems are evaluated across seven core engineering metrics:<\/p>\n\n\n\n

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    • Capacity (kWh or MWh):<\/strong> The total amount of energy the battery can store. (e.g., a typical home battery holds 10\u201315 kWh; grid-scale installations store hundreds of MWh).<\/em><\/li>\n\n\n\n
    • Power Output (kW or MW):<\/strong> How fast energy can be delivered at any given moment. (High power is required to start major appliances like heat pumps).<\/em><\/li>\n\n\n\n
    • Round-Trip Efficiency (RTE):<\/strong> The percentage of energy retrieved relative to the amount put in. High efficiency means less power is lost as heat during charging and discharging.<\/li>\n\n\n\n
    • Cycle Life & Degradation:<\/strong> How many full charge\/discharge cycles a battery can complete before its initial capacity drops to 80%.<\/li>\n\n\n\n
    • Depth of Discharge (DoD):<\/strong> The percentage of the battery’s capacity that can be safely used without accelerating degradation.<\/li>\n\n\n\n
    • Volumetric & Gravimetric Energy Density (Wh\/L or Wh\/kg):<\/strong> How much energy fits within a specific physical space or weight. High energy density is critical for vehicles, but less important for home basements or grid fields.<\/li>\n\n\n\n
    • Levelized Cost of Storage (LCOS):<\/strong> The true financial metric\u2014calculating the total upfront cost plus maintenance, divided by the total energy the battery delivers over its operational lifetime (\u20ac\/kWh delivered).<\/li>\n<\/ul>\n\n\n\n

      2. Comparison of the Leading Battery Technologies<\/h2>\n\n\n\n
      Technology<\/th>Round-Trip Efficiency<\/th>Typical Cycle Life<\/th>Safety \/ Thermal Stability<\/th>Primary Best Use Case<\/th><\/tr><\/thead>
      Lithium Iron Phosphate (LFP)<\/strong><\/td>90% \u2013 95%<\/strong><\/td>4,000 \u2013 8,000+<\/strong><\/td>Very High (hard to catch fire)<\/td>Home solar backup & grid-scale<\/strong><\/td><\/tr>
      Nickel Manganese Cobalt (NMC)<\/strong><\/td>90% \u2013 95%<\/strong><\/td>1,500 \u2013 3,000<\/strong><\/td>Moderate (requires active cooling)<\/td>Electric Vehicles & electronics<\/strong><\/td><\/tr>
      Flow Batteries (e.g., Vanadium)<\/strong><\/td>70% \u2013 85%<\/strong><\/td>15,000 \u2013 20,000+<\/strong><\/td>Maximum (non-flammable liquid)<\/td>Long-duration grid backup (8\u201324h+)<\/strong><\/td><\/tr>
      Sodium-Ion (Na-Ion)<\/strong><\/td>85% \u2013 90%<\/strong><\/td>3,000 \u2013 5,000<\/strong><\/td>High (uses non-critical materials)<\/td>Budget grid storage & cold climates<\/strong><\/td><\/tr><\/tbody><\/table><\/figure>\n\n\n\n

      3. Which Battery is «Best» for Each Application?<\/h2>\n\n\n\n

      For Residential Home Solar: LFP (Lithium Iron Phosphate)<\/strong><\/h3>\n\n\n\n

      LFP is the clear winner for home systems.<\/sup> Because weight and size do not matter in a garage or utility room, LFP’s slightly lower energy density compared to EV batteries is irrelevant.<\/sup> In exchange, it offers extreme thermal stability<\/strong> (reducing fire risks) and can cycle daily for 15+ years before noticeable degradation.<\/sup><\/p>\n\n\n\n

      For Short-Duration Grid Storage (1 to 6 Hours): LFP Systems<\/strong><\/h3>\n\n\n\n

      LFP accounts for the vast majority of grid-scale battery installations globally.<\/sup> High round-trip efficiency (~92%) ensures low energy loss during rapid energy arbitrage (charging during peak solar\/wind, discharging during high demand).<\/p>\n\n\n\n

      For Multi-Day or Seasonal Grid Storage (8 to 24+ Hours): Flow Batteries<\/strong><\/h3>\n\n\n\n

      Flow batteries store energy in large tanks of liquid electrolyte. Though less efficient and more physically bulky than lithium, their energy capacity is expanded simply by building larger tanks.<\/sup> They do not suffer chemical degradation over time, making them far cheaper per kWh for long-duration storage.<\/p>\n\n\n\n

      Is there an example of battery storage for the grid?<\/p>\n\n\n\n

      One of the clearest real-world examples of grid-scale battery storage is the Moss Landing Energy Storage Facility<\/strong> in California, USA.<\/sup><\/p>\n\n\n\n

      Rather than building dedicated new ground, developers converted an old, retired gas power plant into a massive Battery Energy Storage System (BESS).<\/p>\n\n\n\n

      Key Specifications of Moss Landing<\/h3>\n\n\n\n