Salderingsregeling stopt in 2027: wat het betekent voor jouw zonnepanelen
Vanaf 1 januari 2027 verandert salderen. Lees de regels voor teruglevering en bekijk een rekenvoorbeeld met expliciete aannames.
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🌐 Worldwide Reference Guides
Solar & Battery Benchmarks for 66 Cities
Explore regional solar yield bands, seasonal irradiance, and worked sizing examples for 66 benchmark cities worldwide. (Note: our interactive estimator calculates for any coordinates worldwide.)
Explore more tools: Global Payback Heatmap · About the Sizing Method
Hawaii Solar Scams: What the State's 2026 Warning Means for You
Hawaii DCCA warned of misleading door-to-door solar claims. Check business records, verify offers, and find official cancellation guidance.
What Hawaii's 2026 Hurricane Season Taught Us About Backup Power
Verified reports on Hurricanes Lala, Lowell, and Nolo, with practical outage planning and current BYOD Plus program terms.
Battery cycle life and depth of discharge: a practical guide
Learn what cycle-life ratings say, why test conditions matter, and how to plan around usable battery capacity.
Solar Backup for Load Shedding: Size Critical Loads (2026)
Plan backup from measured critical loads, actual outages, local solar data, and compatible equipment.
Solar vs Generator Running Cost: Honest Fuel Math (2026)
Fuel $/kWh at $1-2/L vs solar+battery LCOE, with worked Lagos and Beirut 10 kWh/day examples. Free tool.
How to Size an Off-Grid Battery Bank (2026)
Loads and backup duration come first. Compare usable energy, power limits, compatible equipment, and local installation rules.
What Size Solar System for Off-Grid? Honest Guide (2026)
Estimate off-grid solar and battery needs from measured loads, local weather, and your backup plan. Compare site-specific options.
Time-of-Use Battery Savings: Dodge Peak Prices (2026)
Peak vs off-peak arbitrage math, 2 kWh shifting example, and battery sizing table. Free tool.
Is a Home Battery Worth It? A Homeowner's Decision Guide
Compare your tariff, usage, battery quote, and backup needs before deciding.
How to Cut Your Electricity Bill With Solar (2026 Guide)
Compare solar options with your real utility bill, export-credit rules, storage needs, and full installed costs. No universal bill-cut or payback promise.
Off-Grid vs Grid-Tied Solar: Which Pays Back Faster in 2026?
Real payback numbers for Hawaii, Nigeria, and Germany — worked step by step from five years of satellite weather. When independence wins, when bill-cutting wins, and what the hardware truly costs.
DIY Battery Storage: The Complete Guide to LiFePO4 and Sodium-Ion Builds in 2026
Compare the full scope of a DIY battery build with a prebuilt system, including delivery, electrical work, permits, inspection, warranty, and support.