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California Votes to Require Rooftop Solar Power on New Homes

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11–20 of 329 posts

Re: California Votes to Require Rooftop Solar Power on New Homes

#11
This is dumb. They should have required a certain energy usage per area and slapped on incentives to make rooftop solar the obvious way to meet it for new houses. Leave the technology up to the industry rather than tie the industry to a specific technology.

When you say you want housing policy to be controlled by the $CURRENT_LEVEL +1 government this is what you risk getting. The entrenched interests just dig themselves in at the next level up as well.

Re: California Votes to Require Rooftop Solar Power on New Homes

#12
If the government had mandated that everyone had to buy an ENIAC, would that have made computers smaller and faster?

Rather, the government should invest in research so solar + storage (let's call it green energy) becomes cheap enough that people want to use it.

This is not because its better that people want to do it, or because capitalism is glorious.

This is because you want the incentives in the right place. If green power were cheap enough, that would mean you solve the latency problem, the efficiency problem, the distribution problem and the waste problem.

Simply mandating rooftop solar might make some of these problems worse.

Re: California Votes to Require Rooftop Solar Power on New Homes

#14

If the government had mandated that everyone had to buy an ENIAC, would that have made computers smaller and faster? Rather, the government should invest in research so solar + storage (let's call it green energy) becomes cheap enough that people want to use it. This is not because its better that people want to do it, or because capitalism is glorious. This is because you want the incentives in the right place. If g…

The research has already been done. Generation and consumption of renewables still requires regulation to align incentives.

Re: California Votes to Require Rooftop Solar Power on New Homes

#15

So I guess putting up shade trees to reduce cooling costs isn't a thing any more? Is it net positive to use solar panels? Trees and houses just won't go together any more?

You can still put a tree up. You will also be required to put solar panels underneath it.

Re: California Votes to Require Rooftop Solar Power on New Homes

#16
post #3

Saw this in my rss this morning: https://marginalrevolution.com/marginalrevolution/2018/05/ro... > I just became aware in the last few days of the proposal in the new building energy efficiency standards rule making to mandate rooftop solar on all new residential buildings. I want to urge you not to adopt the standard. I, along with the vast majority of energy economist, believe that residential rooftop solar is a mu…

Even though rooftop solar might not be the most economical solution to reduce greenhouse gas footprints, I would argue it's very effective. The costs are directly baked into the real estate mortgage and requires zero changes with regards to zoning and planning.

In an ideal world SB827 makes sense, but it was rejected. So I'm glad CA is trying something more pragmatic instead of waiting for a 'perfect' solution. Even if something similar to SB827 is passed in the future - worse case, we'll end up a bunch of rooftop solar installations. That's not so terrible.

Re: California Votes to Require Rooftop Solar Power on New Homes

#17

If the government had mandated that everyone had to buy an ENIAC, would that have made computers smaller and faster? Rather, the government should invest in research so solar + storage (let's call it green energy) becomes cheap enough that people want to use it. This is not because its better that people want to do it, or because capitalism is glorious. This is because you want the incentives in the right place. If g…

The research has already been done. Generation and consumption of renewables still requires regulation to align incentives.

Well, storage is still too expensive.

There is a role for regulation but a carbon tax is the way to go.

Re: California Votes to Require Rooftop Solar Power on New Homes

#18
post #9

So I guess putting up shade trees to reduce cooling costs isn't a thing any more? Is it net positive to use solar panels? Trees and houses just won't go together any more?

That's a good point... and pretty sad actually... Edit: And I can't help but think of the driven up cost of roof repairs. So 10-15 years down the road when you get a leak in your roof.. now you got to pay labor to pull the panels before you can even repair the roof...

Solar panels increase roof structural strength through the racking used for mounting and increase roof material longevity by directly shielding the roof from solar irradiation.

Re: California Votes to Require Rooftop Solar Power on New Homes

#19
post #6

Given how little PV costs compared to an average new build, I’m surprised it took this long to be a requirement anywhere. The cells themselves are, what, US$920 for 4kW? And most of the rest is installation cost which is much lower if it is an alternative to rather than a bolt-on to a normal roof? Sure, it’s more for batteries and inverters, but PV or thermal should’ve been standard even a decade ago.

On average, it might even save a homeowner money after about 10 years. But I'd much rather leave the decision up to the relevant people instead of mandating this at the state level. If it makes sense to build it, I trust they already would have (as many do), and there will always be exceptions (e.g. shade) where the mandate will be perverse.

Re: California Votes to Require Rooftop Solar Power on New Homes

#20

Earlier quoted context omitted.

The research has already been done. Generation and consumption of renewables still requires regulation to align incentives.

Well, storage is still too expensive. There is a role for regulation but a carbon tax is the way to go.

Expensive compared to what? CO2 emissions? You already get a 30% federal tax credit as well as CA state and local utility incentives, what more is necessary? A free system?

I agree a carbon tax would be ideal. It seems politically impossible though, so you achieve what you can.

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