Hacker News new | ask | show | jobs
by Retric 3584 days ago
> the relevance.

Just re-stating the problem. People use fossil fuels to heat homes, but we don't generally consider passive heat gain.

China has a lot of fossil fuel use if you look at fossil fuels, but they are also a world leader in solar hot water heaters. They don't show up on most statistics, but people still enjoy the hot water. Further they cost less than 1/10th of what similar systems cost in the US and could dramatically reduce the need for home heating.