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Old 09-01-2017, 02:55 PM   #201
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It's spring! And I have 6 months of generation on the books, the "short" 6 months, 9-21-16 to 3-20-17;



We've had a wet and cloudy and stormy season to boot. Looking forward to the next 6 months and my first annual true up bill. From what I see so far it's gonna be really small -
I look at my electricity usage during the exact same period, and it was 7100 kWh. Yes, my utility company Web site lets me download the usage over the past 36 months.

In another post, you said your previous annual bill was $1500. Do you know off-hand how many kWh you used a year?

I used 17,500 kWh/yr, at a cost of $2080. I know electric rate is much higher in CA, but wonder how much higher.
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Old 08-18-2018, 07:29 PM   #202
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I look at my electricity usage during the exact same period, and it was 7100 kWh. Yes, my utility company Web site lets me download the usage over the past 36 months.



In another post, you said your previous annual bill was $1500. Do you know off-hand how many kWh you used a year?



I used 17,500 kWh/yr, at a cost of $2080. I know electric rate is much higher in CA, but wonder how much higher.


ARISE THREAD!

Considering solar in a new house purchase. But have to look at possibly replacing the roof first(with seller credit)...

Researched our costs and we average $0.225/kWh here in San Diego. Base rate is around $0.13; high user peak of $0.36/kWh in the summer. Average monthly bill for electricity alone is $146, peaking in the summer near $300 with a toddler and nanny home all day.

Thanks to this thread, Iíve learned a lot. (Roof repair prior to solar? 30% tax credit!) I ran the pvcalc among other calls, and most recommended a 5.4kW install if we decide to run AC and an electric tankless water heater. Cost around $16k, $12k after incentive, payback in 6.2-7yrs. IRR on up front investment over 25 yrs of around 10%, not including opportunity cost of investing the cash up front.

Seriously considering this move since the roof will likely need work anyway, the breaker box needs replaced, and we should get electric, roof, and water heater credits from the seller at closing.
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Old 08-18-2018, 09:05 PM   #203
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My second annual true up is this month. I think my annual bill for juice this year will be less than $200. Since I do not net generate I get full credit on my connect fee and I'll owe them less than a hundred bucks.
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Old 08-18-2018, 09:53 PM   #204
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With water coming out of the well at about 45 degrees, I decided to go with a regular high end electric water heater. Trying to bring water at that temp up to hot water levels would have taken several on demand heaters in a row. I don't think you should have that kind of problem in San Diego. (BTW, I am thinking about putting an on demand heater in line after the water heater to supplement during any high use of the hot water.)
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Old 08-18-2018, 11:21 PM   #205
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My chosen price plan charges $0.0727/kWh for off-peak hours, and $0.2215/kWh for the on-peak period from 1PM to 8PM.

In the month of July 2017, I used 2775kWh at a cost of $350. That's an average of $0.126/kWh.


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... Researched our costs and we average $0.225/kWh here in San Diego. Base rate is around $0.13; high user peak of $0.36/kWh in the summer. Average monthly bill for electricity alone is $146, peaking in the summer near $300 with a toddler and nanny home all day...
If I had to pay your average rate, my bill would have been $624 in July. But then, if I were in SD, I would not use so much electricity.
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Old 08-18-2018, 11:23 PM   #206
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Has anyone experienced a condo association going to solar on the buildings? We have buildings divided into four units each with plenty of roof area that looks ideal. I wonder how that would work in a condo / HOA situation.
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Old 08-18-2018, 11:34 PM   #207
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My chosen price plan charges $0.0727/kWh for off-peak hours, and $0.2215/kWh for the on-peak period from 1PM to 8PM.



In the month of July 2017, I used 2775kWh at a cost of $350. That's an average of $0.126/kWh.









If I had to pay your average rate, my bill would have been $624 in July. But then, if I were in SD, I would not use so much electricity.
We used about a third of that even running A/C. But our avg costs are why Iím considering it. While residential solar is financially questionable in a lot of places, here it is just shy of a no brainer if things like longevity in the house, roof condition, and electricity use line up.
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Old 08-18-2018, 11:36 PM   #208
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With water coming out of the well at about 45 degrees, I decided to go with a regular high end electric water heater. Trying to bring water at that temp up to hot water levels would have taken several on demand heaters in a row. I don't think you should have that kind of problem in San Diego. (BTW, I am thinking about putting an on demand heater in line after the water heater to supplement during any high use of the hot water.)
Iím concerned about the tanklessí ability to keep up. Iíll have a family of four with two bathrooms. I think a high end one can keep up, and running solar I wouldnít care much about electric, so it reduces the up front cost vs. gas by about 50%. But Iíd like to go tankless if we can... weíll see what kind of seller credit we get too.
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Old 08-18-2018, 11:45 PM   #209
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Iím concerned about the tanklessí ability to keep up. Iíll have a family of four with two bathrooms. I think a high end one can keep up, and running solar I wouldnít care much about electric, so it reduces the up front cost vs. gas by about 50%. But Iíd like to go tankless if we can... weíll see what kind of seller credit we get too.
With the new solar pricing plan where I am, one would not go tankless. There is a cost associated with the peak demand, even if the homeowner pulls out from the grid the same kWh that he puts in.

Their reasoning is that a solar homeowner may put electricity to the grid when there is not a lot of demand, yet pull from the grid where everybody is using a lot of electricity and the sun is setting.
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Old 08-18-2018, 11:46 PM   #210
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Iím concerned about the tanklessí ability to keep up. Iíll have a family of four with two bathrooms. I think a high end one can keep up, and running solar I wouldnít care much about electric, so it reduces the up front cost vs. gas by about 50%. But Iíd like to go tankless if we can... weíll see what kind of seller credit we get too.
Nash, curious if you have a solar provider youíve heard good things about. Weíre looking at relocating to the area and for the home weíre looking at, solar is a top priority. SDG&E rates are crazy.
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Old 08-18-2018, 11:59 PM   #211
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Has PV gotten so cheap that it makes economic sense to use it to heat water electrically rather than heat water directly with the sun? I understand the storage issue and that solar water heating requires some mechanical complexities, but heating water directly used to be the first and most cost-effective step for anyone who wanted to use the sun to cut their electric bill.
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Old 08-19-2018, 12:22 AM   #212
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I can get solar panels for $0.40 to $0.50 per watt from a vendor in town.

Using solar electric to heat water is not as efficient as direct solar water heating. But when you consider that running electrical wire is a lot simpler than running plumbing, other factors enter into play. There's a maintenance issue too with the water piping and insulation, the freeze protection, the danger of water leak, etc...

PV solar panel efficiency is approaching 20%. Even if a solar water panel is 80% efficient, it may be a lot easier to put up 4 photovoltaic panels and wire them up, compared to one water panel and all the plumbing.
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Old 08-19-2018, 02:03 PM   #213
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Has anyone experienced a condo association going to solar on the buildings? We have buildings divided into four units each with plenty of roof area that looks ideal. I wonder how that would work in a condo / HOA situation.
While reading our owner handbook this morning, our current "village" is a condominium and has rules regarding solar. To wit, CA law prohibits the HOA from holding a vote to determine if owners can install solar or not, but the roofs are considered "common property", so the HOA/Architectural board still has to approve it. And then, if approved, the owner becomes responsible for the roof with no discount to their monthly assessment. So you can imagine that not a single home in our village has solar.

The "village" we are moving to (within the same HOA) is custom single family homes, so while the HOA still has to bless it, it's an easier process from that end since we will already own the roof.
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Old 08-19-2018, 02:06 PM   #214
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Nash, curious if you have a solar provider you’ve heard good things about. We’re looking at relocating to the area and for the home we’re looking at, solar is a top priority. SDG&E rates are crazy.
Not yet, but I'll report back here. We just accepted an offer on our current home this morning, which means our contigent purchase of the new house will go through. Anticipate moving next month (about two blocks away).

There are going to be some hoops to jump through first: I'm getting the roof inspected by a contractor as it's 40-years old. I intend to request a credit from the seller if it's determined that it needs to be replaced or repaired. If that happens, I may look for an "economy of scale" for a roofer who is also a solar installer. We'll see. One of the new neighbors has a 12-panel system on their roof, so I'm going to pick their brains as well.

I'll post updates as this goes on, but I'm leaning strongly toward an immediate solar install once the roof is all sorted out.
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Old 08-19-2018, 02:10 PM   #215
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With the new solar pricing plan where I am, one would not go tankless. There is a cost associated with the peak demand, even if the homeowner pulls out from the grid the same kWh that he puts in.

Their reasoning is that a solar homeowner may put electricity to the grid when there is not a lot of demand, yet pull from the grid where everybody is using a lot of electricity and the sun is setting.
Thanks. I'm weighing options for all of that, and there are questions I need to ask on the solar end of it before I go the electric tankless route. It might be overkill with an AC install in the future... Gas is inexpensive, so perhaps a gas tanked or tankless is the way to go. Gas tankless would be more expensive up front, but they generally last 20+years (supposedly) whereas tanked are 7-12 years. The current one in the "new" house is 19 years old and badly in need of replacement... so we'll request a credit for that.
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Old 08-19-2018, 02:10 PM   #216
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The electric rate here (PGE) starts at 24 cents / kwh and peaks at 44 cents. Solar pays back fast.
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Old 08-19-2018, 02:39 PM   #217
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Has anyone experienced a condo association going to solar on the buildings? We have buildings divided into four units each with plenty of roof area that looks ideal. I wonder how that would work in a condo / HOA situation.
Condo or SFH, I'd really recommend that people look into buying a share of a solar farm. It really makes so much more sense to put in one large installation on a flat roof or flat ground somewhere. The installation is safer (rooftop solar is actually associated with a high % of deaths/injuries, worse than even coal I think), there is economy of scale (one permit, one team at one location, one electrical connection, etc), all the panels will be at the optimum angle, and no shade, (often not the case with residential), and you don't have to worry about moving.

the first link I found:

https://www.energysage.com/solar/com...wer-explained/

-ERD50
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Old 08-28-2018, 07:00 PM   #218
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OK, time for another annual true up. My panels generated 6000 kWh and I had a net usage from the power company of 1260 kWh. My bill for the entire year was $190. But since I used more than I generated I got full credit for the connect fee $120 and only need to send them seventy bucks.

Sweet -
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Old 08-28-2018, 07:43 PM   #219
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Our twelfth true-up was in June. Our 3kW system generated about 4800kWh for the year, and we used 100kWh less than that. So we only had to pay the $10/mo delivery charge. PG&E got to keep the $30 from our excess generation. I think that's a reasonable charge for providing and maintaining the power grid to our house year-round.
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Old 08-29-2018, 12:22 AM   #220
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What would it have cost you if you had to pay 100%? What is breakeven?


I used over 14,000 kWh and paid about $1,400... I will be higher this year as the rate I could get went up...
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