[groar]

Daox: the coldest temperature has been -7°C (19°F) this winter. It's near freezing generally. During the blackout night it has been near freezing. The internal temperature with the chimney was 23°C (73°F) when we went to bed and 17°C (62°F) 10 hours later when we woke up. The chimney is pretty efficient to heat the living room (the previous house owner were using it mainly) and the insulation is rather good as the house lost 0.6°C/hour (1.1°F/hour) with a 15°C (27°C) difference between internal and external temperature In facts the loss must be a little more as the chimney didn't had flames in it when we went to bed, but it was always generating heat.
We made a little stock of wood for 3 days. In case of far colder temperature we may live only in the living room and so heat only the living room + kitchen (in fact same room of 50m² 450 sqft, half the house surface). During the blackout the bedroom doors were opened to heat the bedrooms.

James: the solar panels are OK, they are tightly integrated to the roof, even more than the tiles they are replacing. Every year we have 80 km/h (50 mph) winds several times per year, the 20° angle of roofs are helping to lower the impact of the wind.
The region with impacted forest doesn't have such winds, the trees are high (pines) and the soil is mainly sand. The surfaces are effectively in hectares.
On some food sold frozen, there are stickers that are changing their color when exposed to a "too hot" temperature (-3°C / 26°F iirc).

Denis.