diy solar

diy solar

5th day of no sun

As I have said far too many times, LFP has a designed Working Voltage of 3.000-3.400 which is where the deliverable AH are supposed to come from. Generally the "safe zone" is from 2.850 up to 3.425 with A cells. Once outside of the working range, running occurs. I set my LVD to 2.700 because if there is a heavy load when below 2.9 it can drop low "momentarily" so I account for a buffer.

My home uses on average 4kWh per day. sometimes a bit more or little less but not more that 1/2kWh. Everyone freaks at that but there is good reasons for it. I designed & built this house for High Efficiency, my walls are 9" thick, Roof is 12" thick. All Insulation is High Density Foam, I have a Cool Roof system tied into a Rainscreen siding system that provides not only a thermal break but passive cooling in summer and a heat buffer in winter. I tossed away my AC system as the house never gets above 27C/80F even when it is 37C/100F outside. In winter when it is -30C/-22F the house remains at 25C/77F inside and the heating system only runs for 4 hours within a 24 hour period. Yes it is all monitored & tracked.

My final version of Solar (now in progress) will be completed with 1470AH/37.6kWh.
Interesting. My house is typical 1960's build in the U.S. (Colorado urban) and I've done nothing really to make it more efficient other than mostly converting to LED Lighting. I use a max of about 20Kwh per day.... No AC - Swamp cooler in the summer, Natural Gas Furnace and Hot Water (I'd love to get rid of Natural Gas but that would also increase my Electrical usage).
 
That doesn't really answer my question, or how this makes a code compliant, permited, and inspected off-grid system illegal.
100% off grid new home in Florida, full permit package and a strict but fair planning dept.
So far so good, aiming for CO middle of next year. It can be done.
 
Interesting. My house is typical 1960's build in the U.S. (Colorado urban) and I've done nothing really to make it more efficient other than mostly converting to LED Lighting. I use a max of about 20Kwh per day.... No AC - Swamp cooler in the summer, Natural Gas Furnace and Hot Water (I'd love to get rid of Natural Gas but that would also increase my Electrical usage).
The truth is that Conservation is FAR cheaper than generation & storage. In the USA you now have the IRA program which includes a LOT of goodies to improve you home efficiency. A Large amount of people have no idea about it at all. I dug into it to help my GF (lives in Illinois caring for her elderly parents) and holy cow we discovered a LOT.

Rebates include home electrification and appliance rebates that will act as immediate discounts at the point of sale for low- and moderate-income households when making qualifying electrification purchases.

There’s also the home efficiency rebates program that rewards modeled energy savings of at least 20% or measured energy savings of at least 15%. So, if you save a specific amount of energy and have receipts, then you get a rebate. It’s not income-capped, but at least half of the program’s funding will go to low-income households.

A few Links to peruse (you may be surprised)

How much money can you get with the Inflation Reduction Act?​

 
The truth is that Conservation is FAR cheaper than generation & storage. In the USA you now have the IRA program which includes a LOT of goodies to improve you home efficiency. A Large amount of people have no idea about it at all. I dug into it to help my GF (lives in Illinois caring for her elderly parents) and holy cow we discovered a LOT.
As we speak the US House is trying to dismantle many of those programs.
 
As we speak the US House is trying to dismantle many of those programs.
Agreed BUT Politics = Toxic Hazard to be avoided in friendly social environments like here.
Universal Agreement pretty much by everyone, everywhere. All Politicians are the Lowest Form of life on this planet regardless of their parties, flag colours or other things... They're all scum ! They are only good for pissing people off.
 
The truth is that Conservation is FAR cheaper than generation & storage. In the USA you now have the IRA program which includes a LOT of goodies to improve you home efficiency. A Large amount of people have no idea about it at all. I dug into it to help my GF (lives in Illinois caring for her elderly parents) and holy cow we discovered a LOT.



A few Links to peruse (you may be surprised)

How much money can you get with the Inflation Reduction Act?​

Yep, on my list...in Colorado it's not going to be available until mid 2024 (I spoke with them last month) :(
 
Currently on day 5 of no sun, finally turned the heat pump off and turned on the furnace this morning. Battery is currently at 21% and we are using about 1%/hour. I finally turned the AC input on to the inverters, breaker has been off since March.
Same here...expecting two more days of dense clouds.

Switched over to grid yesterday. Charged the batteries up to 25% for backup if needed.

Winter is coming!

Screenshot_20231029_112634_Edge.jpg
 
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100% off grid new home in Florida, full permit package and a strict but fair planning dept.
So far so good, aiming for CO middle of next year. It can be done.
Funny, I used to live in Florida. Don't anymore. Got tired of being flooded out of homes and had a home blown down by a hurricane. Your new home has to be off grid. You see, sea levels are rising and Florida's coast line is receding. Not to mention being surrounded by dead coral reefs that can't live in over 100 degree water. The utility companies can't produce reliable power for the state when every year the state is battered by major wind events and flooding causing billions in damages and uprooting lives. Oh yes, the PV panels on many homes get destroyed in these events. And rebuilding takes way more than a year, your looking at 5 years or more. Don't you find it funny as a Floridian that each year the State's citizens collect billions of dollars in Federal assistance for these disaster events and through the National Flood Insurance Program while those Americans living in states like California, Washington, Oregon, Idaho, Montana, Colorado and more are blocked from realizing the benefits of a National Wildfire Insurance Program to protect homeowners. My Congressman, Darrel Issa, a fine man, opposes a Federal Wildfire Program because "for many years the State of California did not properly manage the Federal forest land in the state and that is why there are wildfires so the State has to bear the cost". Genius I say.
 
Agreed BUT Politics = Toxic Hazard to be avoided in friendly social environments like here.
Universal Agreement pretty much by everyone, everywhere. All Politicians are the Lowest Form of life on this planet regardless of their parties, flag colours or other things... They're all scum ! They are only good for pissing people off.
It really makes a LOT more sense once you actually look at the word...

Poly - Many, More than One
Ticks - Blood sucking parasites, members of the Arachnid family

Politics!
 
It really makes a LOT more sense once you actually look at the word...

Poly - Many, More than One
Ticks - Blood sucking parasites, members of the Arachnid family

Politics!
Exactly right. Over my lifetime I have seen the family unit go from being the beneficiary of a national policy to provide abundant electricity at very low affordable prices, to now being the target of big utility corporations and mega equipment manufacturer's incessantly lobbying in every state for higher and higher rates to support their mega grid expansions adding hundreds of billions in wealth to these corporations all resulting in the draining of the homeowner's or renters or businessman's wallets and negatively impacting lifestyles.
 
If you have grid power available why not use it instead of suffering. It's cheaper than fuel to run a generator.
We aren't suffering in the least.

Test to see how long battery bank lasts with consecutive days of no sun and to ensure inverters automatically switch to grid. Today was another day with no sun but inverters switched and charged bank to about 30%. One more test was to see how well cells stay balanced at 3.0V and below.
 
The truth is that Conservation is FAR cheaper than generation & storage. In the USA you now have the IRA program which includes a LOT of goodies to improve you home efficiency. A Large amount of people have no idea about it at all. I dug into it to help my GF (lives in Illinois caring for her elderly parents) and holy cow we discovered a LOT.

I'm well aware of what it is in the IRA and have been taking full advantage of it. Possibly more 2 heat pumps in the house next year and I'm trying to decide if I install a gasification wood boiler. Heat pump in the shop to replace the 2 ton window unit I have to install and pull out every year that is extra cooling capacity for the 2 ton central air handler air conditioner. House might get a heat pump dryer.

Currently looking at solar for the shop to at least run lighting and office. Shop is 15% tax credit first year with a full years depreciation, then depreciate the rest over the next X years.

Probably switching my golf cart to LFP and use that battery in the winter for supplemental battery in the house. I've debated adding another 4Kw array to the house.

Like farmers around here say, if the government is handing out money, take it. You are paying for it anyway with your tax dollars.
 
Same here...expecting two more days of dense clouds.

Hopefully it isn't like last December with endless periods of no sun. I'd like to cut the heating bill this year to see where I intend to use a wood boiler.

Switched over to grid yesterday. Charged the batteries up to 25% for backup if needed.

I wasn't too concerned about grid outage yet. It's when the big storms hit.
Winter is coming!
I'm never ready for winter.
 
Hopefully it isn't like last December with endless periods of no sun. I'd like to cut the heating bill this year to see where I intend to use a wood boiler.



I wasn't too concerned about grid outage yet. It's when the big storms hit.

I'm never ready for winter.
Dec 2022 was something like 21 days of dense clouds.
 
Today we've had dense clouds with on and off rain. I checked my PV voltage and it never got up to normal operating voltage (~350VDC/3.6kW array), more like 90-100V all day. Never seen anything like this before since I installed the system last spring. But living the Ohio River temperate rain forest region such weather is to be expected.

This has me wanting to pull the trigger on getting those server rack batteries more than ever. Just have to figure out a way to convince the boss..
 
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Just have to figure out a way to convince the boss.
Ya all need a three day utility outage...that was a green light to expand our system! :ROFLMAO:

We had three days of clouds, then a partly sunny day yesterday.
Today it was sunny all morning, my Official Solar Tester sees that change in the weather - asks hey am I good to go with a load in the wash and then the electric dryer? - Yup good to go!

She really is getting into this solar routine now, I never imagined my wife would adjust her normal routine to the available solar - but here we are! She is into it.:love::love:
 
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Today it was sunny all morning, my Official Solar Tester sees that change in the weather - asks hey am I good to go with a load in the wash and then the electric dryer? - Yup good to go!

She really is getting into this solar routine now, I never imagined my wife would adjust her normal routine to the available solar - but here we are! She is into it.:love::love:
Nice, want to trade?
 
Today we've had dense clouds with on and off rain. I checked my PV voltage and it never got up to normal operating voltage (~350VDC/3.6kW array), more like 90-100V all day. Never seen anything like this before since I installed the system last spring. But living the Ohio River temperate rain forest region such weather is to be expected.

This has me wanting to pull the trigger on getting those server rack batteries more than ever. Just have to figure out a way to convince the boss..
Have you checked to see if your inverter is hanging up in the 90v range? Verified with a meter? One of my 6500s hang up at 90v until voltage gets very high around 300v. If you have a disconnect on your PV you can cycle that and see if your voltage and output increases. I have latest firmware that is supposed to fix this, I will be calling Signature Solar soon to get fixed.
 
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