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Puerto Rico's Solar Microgrids Beat Blackout

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31–40 of 251 posts

Re: Puerto Rico's Solar Microgrids Beat Blackout

#31
Based on what I see in the photo in the article, PV array codes in Puerto Rico must be quite different from those in California, because the arrays seem to cover almost the entirety of the roofs. In California fire access codes [1] prevent the entire roof from being covered like in PV that.

1. https://energycodeace.com/site/custom/public/reference-ace-2...

Re: Puerto Rico's Solar Microgrids Beat Blackout

#32
post #14
post #8

Earlier quoted context omitted.

Solar output is also proportionate to area of sunlight projection. This means the theoretical capacity available to you is proportionate to real estate, area of planetary surface, under your ownership.

And the area you own is theoretical proportionate to your avaibale money. So yes, rich people can obviously have more of it all, like with everything else that money can buy. But is this really a point worth going in deeper here? I see the point as in "solar power plus battery is good", creates resillence, please more of it. Unfair distribution of wealth is a different problem. And here concreteley the article lacks…

Microgrids at that size are the most expensive way to get resilience. If they're pragmatic for many people then something has failed and we should work to fix it.

Bigger ones have a better tradeoffs, so I'm not so harsh on towns having their own grids. Still unsure whether it's a good use of funds.

Re: Puerto Rico's Solar Microgrids Beat Blackout

#33

Is this more of a battery cost issue - if you owned a battery that charged off the grid and discharged during blackout periods then that might just about cover you if you budget for the expected outage duration.... And assuming you can afford said battery in the first place.

Depends on the length of the blackouts, if it's more than a day then solar panels will allow you to lower the amount of batteries you get.

Re: Puerto Rico's Solar Microgrids Beat Blackout

#34

I don't know much about electrical grids, but I'm wondering if something like this concept could help South Africa with its endlessly struggling electrical grid problems. My city constantly has power outages and the majority of people cannot afford installing solar into their homes.

It is not necessary for the majority to install solar.

Pakistan had similar problems with rolling blackouts, and mass import of photovoltaic equipment and batteries from China has reduced the load on the grid so that outages no longer occur frequently. In fact the demand has shrunk so much that it jeopardizes financing of coal power companies.

https://news.ycombinator.com/item?id=43620309

Re: Puerto Rico's Solar Microgrids Beat Blackout

#35

Earlier quoted context omitted.

From what I understand, South Africa's electrical problems have been long term political.

That's the case everywhere in the world, it's not a tech issue. The tech exists.

The technology certainly exists, though some of it is pretty new and not all of it is mature or commoditized (particularly in the context of high levels of penetration of variable renewables on the grid).

That being said, politics aren't the only reason why it might not be deployed. Capitalization issues, for one, are also common. Additionally, you have to make a judgement call about what you consider included in "politics" -- for example, does corruption count?

Re: Puerto Rico's Solar Microgrids Beat Blackout

#36
post #31

Based on what I see in the photo in the article, PV array codes in Puerto Rico must be quite different from those in California, because the arrays seem to cover almost the entirety of the roofs. In California fire access codes [1] prevent the entire roof from being covered like in PV that. 1. https://energycodeace.com/site/custom/public/reference-ace-2...

The vast majority of roofs in Puerto Rico are flat and the vast majority of buildings are made of cinder blocks and concrete.

Re: Puerto Rico's Solar Microgrids Beat Blackout

#38
post #31

Based on what I see in the photo in the article, PV array codes in Puerto Rico must be quite different from those in California, because the arrays seem to cover almost the entirety of the roofs. In California fire access codes [1] prevent the entire roof from being covered like in PV that. 1. https://energycodeace.com/site/custom/public/reference-ace-2...

Likely because they have building codes that prevent the construction of houses from matchsticks.

Re: Puerto Rico's Solar Microgrids Beat Blackout

#39

Earlier quoted context omitted.

From what I understand, South Africa's electrical problems have been long term political.

That's the case everywhere in the world, it's not a tech issue. The tech exists.

Not always, sometimes its logistics, sometimes outside forces which create time pressures.

Not everything can be solved by money, sometimes its a mythical man month/9 women can't produce a baby in 1 month issue.

However in this scenario, its pure neglect which is causing power issues.

Re: Puerto Rico's Solar Microgrids Beat Blackout

#40
Meanwhile, in third-world, overly bureaucratic Italy, one has to wait several months to get all the paperwork in order to take advantage of a solar installation. Self-deployed solutions are also limited to 800 watts, which is peanuts in today's world.
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