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Tokyo makes solar panels mandatory for new homes built after 2025
- DamonHD 4y agoThis is by far the most popular link that I have posted to my mastodon.energy account! Don't know why! (And yes, I have lobbied my local council here in London to mandate similar...)
- t0bia_s 4y agoChina communist gonverment appreciate it.
- nowherebeen 4y agoIt makes a lot of sense. Solar panels are getting affordable now. I see so many houses built hot climates that always makes me wonder how much energy these houses can harvest if all of them had solar panels on them.
- DamonHD 4y agoAnd indeed would benefit from having sun kept from their roofs, helping the houses stay cool in summer...
- 0cf8612b2e1e 4y agoBut making them harder to heat in winter.
- feet 4y agoIs that a problem if a majority of the energy for heating is renewable?
- DamonHD 4y agoHow so? I have solar PV on my roof and it makes no direct difference to the heating required. Except that I have a little generated energy that provides some warming inside from the appliances that it powers.
- 0cf8612b2e1e 4y agoIf solar panels block the sun from heating the roof in Summer (making it easier to cool) then the reverse is true in Winter. Some amount of free energy is no longer hitting the roof and potentially changing the energy equation. Is it a meaningful difference, I am not sure. However, it is only fair to count the impact on both seasons. Heating costs are significantly higher than cooling (larger absolute temperate delta required to go from 30f to 70f than 90f to 70f)
- DamonHD 4y agoThere is no meaningful solar heat transmitted in through the roof in winter, at least in a climate and building like mine, which is fairly typical.
- eternityforest 4y agoThe whole world needs this. Especially with the absolutely terrifying North Carolina incident. Green energy is no longer just about the green, we need decentralization to protect against people who don't want us to have electricity at all. When we finally move on from lithium, maybe they'll start requiring battery backups too.
- marssaxman 4y agoWhat "North Carolina incident" are you referring to?
- ZeroGravitas 4y agohttps://en.m.wikipedia.org/wiki/Moore_County_substation_attack https://en.m.wikipedia.org/wiki/Moore_County_substation_atta...
- marssaxman 4y agoThanks for the clarification. I've been out of the country for a week, and that was an alarming sentence to read while waiting to board a Charlotte-bound flight!
- Gigachad 4y agoNot against the rules but as an interesting data point, somehow Australia has just about archived this with no mandates. I’d say about 80% of buildings, commercial and residential have solar installed. There have been financial incentives from the government though.
- anakaine 4y agoThe financial incentives drove this, 100%. As an Australian, with solar panels, and a not-too-terrible feed in tariff, I'm hoping we can cram more energy production in to less space from solar so that I can upgrade my system in the decade to come, hopefully to match the hybrid I'd like to buy that doesn't yet exist :)
- piceas 4y agoHamburg too from 2023 and for roof replacements from 2025 for all buildings. https://www.hamburg.de/energielotsen/beratung/15147914/faqs-photovoltaikanlagen-pflicht/ https://www.hamburg.de/energielotsen/beratung/15147914/faqs-...
- j_kao 4y agoThis is an even more effective strategy given the Japanese culture of constantly rebuilding housing [1]. It does beg the question of how sustainable that practice itself weighed against the benefits of solar installation. [1] https://www.theguardian.com/cities/2017/nov/16/japan-reusable-housing-revolution https://www.theguardian.com/cities/2017/nov/16/japan-reusabl...
- t0bia_s 4y agoThat makes comrades in CCCP happy. 95% solar panel production is made in China.