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Solar Batteries 2026: Emerging Technologies and Innovations
Solar Batteries 2026: Emerging Technologies and Innovations
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The solar battery industry is undergoing a major technological revolution: active thermal management, sodium-ion,...

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Rigid vs flexible solar panels: How to choose according to your project?
Rigid vs flexible solar panels: How to choose according to your project?
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Are you considering equipping your motorhome, boat, tiny house or home with a photovoltaic system? The first question...

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Deye Copilot Complete Guide: Configure and Optimise Your Solar Installation
Deye Copilot Complete Guide: Configure and Optimise Your Solar Installation
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Discover how to configure Deye Copilot step by step to maximise your energy savings. Comprehensive guide with...

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Autoconsommation solaire : 12 actions pour gagner +20 à +40%
Autoconsommation solaire : 12 actions pour gagner +20 à +40%
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Augmentez votre taux d'autoconsommation de 20 à 40% sans investir dans de nouveaux panneaux. Découvrez 12 actions...

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Batterie Physique vs Virtuelle France 2026 : Comparatif Complet
Batterie Physique vs Virtuelle France 2026 : Comparatif Complet
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Batterie physique ou virtuelle pour votre installation photovoltaïque ? Découvrez notre comparatif complet 2026 avec...

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Sizing & Selection

Sizing your battery bank correctly is THE key to the profitability of a solar storage system. If it is too small, it will not cover your night-time needs. If it is oversized, it represents a poorly optimised investment with a longer return on investment.

This sub-category guides you through the precise sizing of your battery storage: calculating the capacity required according to your consumption profile, choosing between 48V and high-voltage technologies, and analysing profitability according to the context in France/Belgium (end of the meter running backwards, Wallonia incentive tariff).

How to calculate the required battery capacity? Three complementary methods: night-time consumption method (1 night's autonomy = consumption from 6 p.m. to 8 a.m.), days of autonomy method (2-3 days without production for isolated sites), and optimised economic method (cost-effective capacity vs. cost per kWh stored). Our ultimate guide (2,395 views) details calculations with real-life examples.

48V (low voltage) vs high voltage: which to choose? 48V-51.2V systems (Pylontech, BYD, Marstek) dominate the residential market: simplicity, broad compatibility, increased safety. High-voltage 150-400V systems (Huawei LUNA, BYD HVM, LG Chem) offer superior efficiency and compactness, but are more expensive and limit the choice of inverters. Our comparisons analyse optimal use cases.

You can also discover profitability scenarios by country: in Wallonia, with its incentive tariff, storage becomes relevant from 5-6 kWh. In France, with off-peak hours, charge/discharge arbitrage optimises ROI.

 
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