Knowledge base
Solar, storage, heat pumps and e-mobility – practical know-how from SolarBay engineers, without the marketing noise.
Warranty and insurance for solar systems: what you should know
Product warranty, performance warranty, inverter warranty, installer commitment and insurance: what each covers and what to watch for in a hailstorm.
Home EV charging from solar: an 11 kW wallbox in practice
What an 11 kW Axibox wallbox can do, when you need load management, and how to charge the car directly from solar surplus.
How much does a solar system produce in winter in Hungary?
Monthly yield distribution, the role of tilt, the effect of snow and batteries in winter: realistic expectations for a 6 kWp system.
Panasonic Aquarea T-CAP or High Performance? Which to choose
T-CAP holds its rated output in frost, High Performance delivers excellent efficiency at a lower price. Here is which house suits which.
Heat pump plus solar: how to cut your heating bill
A heat pump and solar make a strong pair, but solar produces little in winter. An honest look at what to expect and how to size it.
Off-grid solar system for a holiday home or farmstead
Where there is no grid, or connecting is expensive, an off-grid solar system is a good solution. Sizing, LFP batteries, generator backup and the limits.
What size battery does a family house need?
Battery size depends on your consumption profile, not your roof. 5, 10 and 15 kWh: when each is right, and what cycle life means.
How a solar installation works: from survey to commissioning
Site survey, design, utility permit, installation, inspection and commissioning: step by step, with realistic timelines.
N-type TOPCon, glass-glass, black frame: what the panel labels mean
A panel datasheet is full of abbreviations. We explain N-type, TOPCon, bifacial and glass-glass, with JA Solar, Leapton and Astroenergy examples.
Huawei, Fronius, Deye, SOFAR, Solis: which inverter suits whom?
Five inverter brands, five different strengths. A comparison table to help you pick the one that fits your needs.
Choosing an air conditioner in 2026: Panasonic BZ, TZ or Etherea?
Three Panasonic lines, three price tiers: when the BZ is enough, when to pick the TZ, and what the Etherea adds. With sizing tips.
Hybrid or standard inverter? When each one makes sense
A hybrid inverter works with a battery and backup mode, a standard one is cheaper and simpler. Here is when each is the better choice.
What is the smart meter (DTSU666 / DDSU666) for in a solar system?
Without a smart meter the inverter cannot know how much the house uses and how much goes to the grid. This small device enables zero export, export limits and accurate monitoring.
2026 residential energy storage grant: a step-by-step guide
Up to HUF 2.5 million for a 5 to 15 kWh battery: who qualifies, how EPR registration works, and the most common pitfalls.
Power optimizers: when are they worth it?
Optimizers do not pay off on every roof. We compare Huawei, SolarEdge and Tigo solutions and show when they are genuinely needed.
10 solar myths that still persist in 2026
It does not work under snow, it powers your home in a blackout, it takes more energy to make than it produces: ten myths, debunked with facts.
The end of net metering: what to do if you are affected
Under gross settlement, an exported kWh is worth far less than a purchased one. Here is how to compensate with self-consumption, batteries and smart control.
Solar panel cleaning and maintenance: what is worth doing and what is not
Solar systems are nearly maintenance-free, but a few yearly checks pay off. Here is when cleaning makes sense, what to avoid, and what to watch in monitoring.
How long does a solar system take to pay back in 2026?
A 5 kWp family-house system typically pays back in 10 to 13 years today. We run the numbers and show what shortens the payback.
Commercial solar: what an SME should check before investing
The payback of a commercial solar system is decided by the load profile, system size and grid conditions, not by the price of the panels. Here is what to clarify before requesting quotes.
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We look at the roof, the consumption and the tariff scheme – then tell you what makes sense and what does not. No obligation.