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Tech reviews, AI deep dives, and vibecoding adventures — with the research notes to back it all up.

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energie·research

This home battery mistake costs you EUR 2,200 (and almost everyone makes it)

Bigger home battery = longer lifespan? Science says otherwise. With scientific papers, concrete calculations, and the EUR 2,200 you could save.

·29 min read·▶ Video
energie

End of the net metering scheme 2027: what you need to do now

May 23, 2026 · 24 min read

energie

Is a home battery worth it in 2026? The honest answer

May 23, 2026 · 25 min read

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energie

6 articles

tech

1 article

Latest

energieresearch
thuisbatterijenergie

Home battery too big? This costs you thousands of euros (the honest explanation)

Most people buy a home battery that's too large -- not because they're foolish, but because the information they get is wrong. Here's the full explanation with numbers, sources, and the math that salespeople would rather skip.

JJooshua·
19 min readVideo
energieresearch
thuisbatterijchina

Home batteries from China: what most people don't realize

Nearly every home battery in the Netherlands contains Chinese cells. But what does that actually mean? A deeper investigation into the supply chain, the real costs of importing yourself, and why the answer is more nuanced than 'Chinese = bad'.

JJooshua·
20 min readVideo
energiereview
zendurethuisbatterij

Zendure SolarFlow 2400 PRO & AC+ review: the technical deep-dive

The comprehensive technical review of the Zendure SolarFlow 2400 PRO and AC+. With efficiency test results, thermal measurements, and an honest comparison -- including the data that didn't fit in the video.

JJooshua·
24 min read
techresearch
metaintroduction

Welcome to Jay's Desk

Everything I find, try, and obsess over ends up here. No jargon, no sponsor scripts — just honest takes from a curious person and their desk.

JJooshua·
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