“Step into summer in January.”
The 3.8 kWh Battery
100 m² of south-facing oak stores 3.8 kWh of solar heat daily (Oslo Passive House). Released at night—no furnace needed.
The Cat’s Solar Panel
Watch where the cat sleeps in winter. That plank is the warmest.
The Child’s Blanket
No socks required. The floor is 23 °C at 6 a.m.
The Final Warmth
When the sun sets forever, the wood will still remember its light.
Store the sun. Explore thermal oak →
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