California gives final ok to require solar panels on new houses – slashdot y gasset

#######

Solar panels will be a required feature on new houses in California, after the state’s Building Standards Commission gave final approval to a housing rule that’s the first of its kind in the United States. From a report: Set to take effect in 2020, the new standard includes an exemption for houses that are often shaded from the sun. It also includes incentives for people to add a high-capacity battery to their home’s electrical system, to store the sun’s energy. "These provisions really are historic and will be a beacon of light for the rest of the country," said commissioner Kent Sasaki, according to The Mercury News. "[It’s] the beginning of substantial improvement in how we produce energy and reduce the consumption of fossil fuels."

The rule marks a new phase in California’s environmental policies, which have often set trends and established standards nationwide. gas key bolt carrier The state has set the goal of drawing 100 percent of its electricity from renewable energy sources and sharply reducing greenhouse gas emissions. The solar panels rule was initially endorsed as part of the state’s Green Building Standards Code by the California Energy Commission back in May.

It’s not quite as large a difference as you suggest. Assuming a 5% rate of return on the market, if you invested the $10k you would indeed have about $43.2k at the end of 30 years. However, if you spent the $10k on solar panels up front and invested the $52.78 you’re expected to save in energy costs each month at that same 5% rate then you would have $43k at the end of 30 years, plus some 30-year-old solar panels which may or may not be worth something. Disregarding any residual value in the used panels, that means buying solar panels only costs you about $200 after 30 years compared to investing the same money in the market, which is practically zero given all the approximations and unknowns involved.

Of course, the expected market rate of return makes a huge difference. At 4.75% APY the panels come out $950 ahead; at 5.25% the investment wins by $1400. The 5% rate used as a baseline is very nearly the breakeven point (~4.96%). Similarly, a 5% variance in the energy savings (~$50-55 vs. the estimated $52.78) would shift the balance by around $2100.

Maintenance: $0. I mean when it doesn’t rain for a long time the power output goes down but a good storm sorts that out. Once I washed them. Waste of time, next time I’ll just wait for another good storm. My inverter has only been running for 7 years so I expect it it about half way through it’s life but effectively this system has paid for itself over many times.

Repair after storms: Not sure what you mean. I mean the last big storm we had damaged roof tiles, wrote off two cars, and I had to replace 3 windows thanks to first size hail which was about at round as a tetrahedron and just as sharp on the edges. grade 6 science electricity test My neighbour was hospitalised because she was out at the time both her cars were written off too, but the panels? Zero damage. I mean they are made of tempered glass mounted against a rigid metal structure. I highly doubt I could break them if I attacked them with a hammer. electricity test physics During the 2013 storms we had the area of my roof with solar panels was the only area which didn’t need repairs.

1. The costs of many of the cheaper solar panels in use absolutely did NOT take into account all of the associated costs of producing them! One of the problems the industry has struggled with are all the cheap Asian panels on the market, often sold at below cost, thanks to government subsidies from China. They were willing to fund these losses at the government level, to help destroy the competition and gain a secure foothold selling them in places like America.

2. As far as I’ve seen? Solar panels do stand up pretty well to the weather. But they won’t work in the normal configuration, supplying AC power back onto the grid to earn your credits on your electric bill, unless you have expensive inverters attached to them. My installation has 2 inverters — one for a set of panels on my roof, and a second one for a set of panels on my detached garage roof. The inverters generally only get a warranty for about half the length the panels are warrantied, and they’re more likely than the panels themselves to have a failure.

3. I’ve never heard of these banks you speak of, who would allow a person to take out a larger home loan if they felt the person might use less electricity thanks to solar panels (or anything else)? That would be risky on a lender’s part, especially not having any guarantee the new homeowner wouldn’t just use additional power, knowing some of their bill was supplemented by solar.

4. As for battery technology? I looked into that, but it’s really too costly to make much sense in many situations. When the financials work out on it? It’s usually only because that person’s utility company decided to arbitrarily give discounted electric rates for power used at night ("off peak"). If you’re able to time-shift your power consumption via battery storage, while making the power during the peak period when the sun is out — that saves you money. basic electricity quizlet But again, that’s just an artificial construct the power company decided to put in place. My power company bills the same amount for my electricity, no matter when I use it. I’d hate to invest a lot of money in battery storage for PV solar on a home, only to find the power company decided to change the billing around shortly after that and eliminated the only reason it made financial sense!

As an overall thing? I can see how solar does pay for itself in the sunniest parts of the country. Nevada, California or Hawaii? Yeah … probably a good investment. In much of the country though? You’ll really not even do better than possibly breaking even on them. Here in Maryland, for example? A solar system installation similar to what I’ve got (a 7.64Kw sized setup) will typically cost a person around $34,000 to install. You can shave 30% off of that with a Federal tax credit, for now — but that’s still money you only get back a year after you have to buy the thing. But ok — you’re at $23,800 after said credit. Most people don’t have that kind of money just lying around to pay up-front, so now you’re looking at some kind of loan to cover that $23,800. Interest on that is going to chip away at the monthly electric bill savings the system makes, until you’ve got the thing paid off. Meanwhile, given our power rates out here? I’d say at BEST (only a few summer months out of each year), my panels make enough energy to shave about $100 per month off the bill. In months like December or January, it’s likely the panels will generate as little as maybe 800 watts of power total on a snowy or rainy/overcast day. electricity physics definition Enough of those, and you’re looking at a month where the panels only saved you $20-30.