DIY 57kwh 48v EVE280k build

[Aridom82]

No, sorry.

 

[Nobodybusiness]

210kWh of diy LFP 16S and one Trophy 220 doing great. 18 mo OG and loving it.

You have more DIY than me now and almost as much total.
I thought mine was overkill. You must have some big loads?
New EVs or something?

 

[timselectric]

Battery capacity equals freedom.
I always desire more freedom.

 

[Nobodybusiness]

Battery capacity equals freedom.
I always desire more freedom.

To a point I agree.
When you have enough to meet your needs but how many more X times your needs do you need?

How much more freedom does it offer over initial amount.

 

[Aridom82]

I allways thought that when you have enough capacity to store your daily solar production you are good to go.

 

[Nobodybusiness]

I allways thought that when you have enough capacity to store your daily solar production you are good to go

I always thought as long as you have enough to cover your electrical needs you are good but that’s just my opinion.

 

[RV10flyer]

You have more DIY than me now and almost as much total.
I thought mine was overkill. You must have some big loads?
New EVs or something?

Three to seven days of cloudy, cold Jan-Feb weather. All electric home and shop. 16 SEER through 33 SEER heat pumps. 80 gal standard HWH, we cook a lot, woodburner below 25F- used if cloudy simultaneously. Finishing 52,000Wpv soon. I love solar and don’t like to use the 10kW LP generator. EV or two for work/personal vehicles coming once the charging infrastructure is fully in place. 2,500W or about 5% should be minimum coming in on the darkest winter days. We barely made it through last winter without using the generator. When it comes to electricity, I don’t like to barely make it. We were down to about 30% on our battery.

 

[timselectric]

To a point I agree.
When you have enough to meet your needs but how many more X times your needs do you need?

How much more freedom does it offer over initial amount.

It depends on how much freedom you want.
Personally, I don't want to ever worry about power anymore. Luckily, this is under my control now.
I recently went through 11 days of sub optimal conditions. And happily, came through without issue.
What level of freedom one wants. Is completely different from another's.
Everyone has to decide for themselves.

 

[Nobodybusiness]

Three to seven days of cloudy, cold Jan-Feb weather. All electric home and shop. 16 SEER through 33 SEER heat pumps. 80 gal standard HWH, we cook a lot, woodburner below 25F- used if cloudy simultaneously. Finishing 52,000Wpv soon. I love solar and don’t like to use the 10kW LP generator. EV or two for work/personal vehicles coming once the charging infrastructure is fully in place. 2,500W or about 5% should be minimum coming in on the darkest winter days. We barely made it through last winter without using the generator. When it comes to electricity, I don’t like to barely make it. We were down to about 30% on our battery.

I hear yea. We had enough battery just not enough solar.
When I switched to the 15ks I can get 18kw per inverter so now upgrading to 36 kw.

 

[Aridom82]

Three to seven days of cloudy, cold Jan-Feb weather. All electric home and shop. 16 SEER through 33 SEER heat pumps. 80 gal standard HWH, we cook a lot, woodburner below 25F- used if cloudy simultaneously. Finishing 52,000Wpv soon. I love solar and don’t like to use the 10kW LP generator. EV or two for work/personal vehicles coming once the charging infrastructure is fully in place. 2,500W or about 5% should be minimum coming in on the darkest winter days. We barely made it through last winter without using the generator. When it comes to electricity, I don’t like to barely make it. We were down to about 30% on our battery.

Here in Italy if you want to have more than 20kwp of solar panels you need to go through the same bureaucracy as if you wanted to get it blessed by the pope. I am about to finish 19,63 kwp, and that produces around 80 kwh in average so with a 90kwh battery i can cycle all my solar power everyday. I am also studying how to store as much heat as possible. For now i am putting infrared heaters in strategic places to heat my shop and the building structure itself with all the extra power, it costs very little and it could be quite effective. We will see.

 

[Nobodybusiness]

Here in Italy if you want to have more than 20kwp of solar panels you need to go through the same bureaucracy as if you wanted to get it blessed by the pope. I am about to finish 19,63 kwp, and that produces around 80 kwh in average so with a 90kwh battery i can cycle all my solar power everyday. I am also studying how to store as much heat as possible. For now i am putting infrared heaters in strategic places to heat my shop and the building structure itself with all the extra power, it costs very little and it could be quite effective. We will see.

Why would they care how big your system is if you are off grid?

Now if you are back feeding then I can understand the permission

 

[Aridom82]

Why would they care how big your system is if you are off grid?

Now if you are back feeding then I can understand the permission

If you are back feeding the grid then you can go have more than 20kwp but is illegal for you to diy it, you have to get a company to do it and you dont want to know how hard are those heads and the astronomical figures they ask.

My guess is that is just another method of control, make sure nobody gets too independent and that they control all the energy. They want you to go feed the grid so they can get 7-8 kwh from you and give 1 kwh back, and overall to clamp down solar energy develpment in favor of fossil fuels that are own by the very rich and powerful.

 

[Nobodybusiness]

If you are back feeding the grid then you can go have more than 20kwp but is illegal for you to diy it, you have to get a company to do it and you dont want to know how hard are those heads and the astronomical figures they ask.

My guess is that is just another method of control, make sure nobody gets too independent and that they control all the energy. They want you to go feed the grid so they can get 7-8 kwh from you and give 1 kwh back, and overall to clamp down solar energy develpment in favor of fossil fuels that are own by the very rich and powerful.

So are you not allowed to go off grid entirely?

 

[Aridom82]

So are you not allowed to go off grid entirely?

Yes you can go off grid entirely and diy it, but you can not put more than 20 kwp of solar in it without paying a lot and going through a mountain of papers.

If you want more than 20 kw of solar panels in italy good luck.

 

[Nobodybusiness]

Yes you can go off grid entirely and diy it, but you can not put more than 20 kwp of solar in it without paying a lot and going through a mountain of papers.

If you want more than 20 kw of solar panels in italy good luck.

How can they mandate that if you are not on the grid?
Why do you put up with it?

 

[Aridom82]

How can they mandate that if you are not on the grid?
Why do you put up with it?

Very good questions. The short answer is that they just do. The general population is ignorant and disorganized, and there is no force pushing for the regulations that are good for the majority of people instead of a very rich powerful few.
These mandates are not based on logic or efficiency, like all the policies they push they have nice titles but dont have anything to do with what is good for people.

I could go for a while telling the tale of privatizations, on how in the 90's the electric grid and powerplants in the country, all public, were sold to corporations that now extort everybody for 50 cent a kwh even if a third of the electricity comes from renewables from infrastructure built with public funds, and is not coincidence that the presidents that pushed these policies after their time in power went to work for the energy companies as 'consultants' for a 700k bucks a year.

And how do we put up with this shit? We just do for now, like with all the other bullshit.

 

[RV10flyer]

Here in Italy if you want to have more than 20kwp of solar panels you need to go through the same bureaucracy as if you wanted to get it blessed by the pope. I am about to finish 19,63 kwp, and that produces around 80 kwh in average so with a 90kwh battery i can cycle all my solar power everyday. I am also studying how to store as much heat as possible. For now i am putting infrared heaters in strategic places to heat my shop and the building structure itself with all the extra power, it costs very little and it could be quite effective. We will see.

Water is one of the best mediums for storing heat energy. Easy to move where you need it. I have a 600 gallon tank that I plan on heating with a diy air-to-water heat pump, along with heating my standard 80 gal HWH. COP of 2-3 should be achievable with 120°F water temperature. I need to finish my last pv array and a big painting job first.

 

[Aridom82]

Water is one of the best mediums for storing heat energy. Easy to move where you need it. I have a 600 gallon tank that I plan on heating with a diy air-to-water heat pump, along with heating my standard 80 gal HWH. COP of 2-3 should be achievable with 120°F water temperature. I need to finish my last pv array and a big painting job first.

I am definitely considering it. One big insulated water tank, 600 gallon - 3000 lt, at 120 f that represents roughly 100 kwh of heat with about 60 f difference over room temperature. But i have 2 mini splits with a cop of 4,5 in heating mode, so for the money that tank and the installation would cost is better just to add one or two more 15kwh diy battery pack.

I am right now a bit obsessed with this. I am looking at crazy projects like flow batteries, melted parafin wax heat accumulators, heating the building with infrared lamps in key points, concentrate mirror relfected light on a black metal air duct going into the building, i dont know what i am going to do really but i am doing something about it

 

[RV10flyer]

I am definitely considering it. One big insulated water tank, 600 gallon - 3000 lt, at 120 f that represents roughly 100 kwh of heat with about 60 f difference over room temperature. But i have 2 mini splits with a cop of 4,5 in heating mode, so for the money that tank and the installation would cost is better just to add one or two more 15kwh diy battery pack.

I am right now a bit obsessed with this. I am looking at crazy projects like flow batteries, melted parafin wax heat accumulators, heating the building with infrared lamps in key points, concentrate mirror relfected light on a black metal air duct going into the building, i dont know what i am going to do really but i am doing something about it

Experiment, take lots of notes and share when you ready. That’s what I plan on doing. I’m an hvac guy, so some used hp’s and a/c’s are going to get a new lease on life.

 

[Nobodybusiness]

Very good questions. The short answer is that they just do. The general population is ignorant and disorganized, and there is no force pushing for the regulations that are good for the majority of people instead of a very rich powerful few.
These mandates are not based on logic or efficiency, like all the policies they push they have nice titles but dont have anything to do with what is good for people.

I could go for a while telling the tale of privatizations, on how in the 90's the electric grid and powerplants in the country, all public, were sold to corporations that now extort everybody for 50 cent a kwh even if a third of the electricity comes from renewables from infrastructure built with public funds, and is not coincidence that the presidents that pushed these policies after their time in power went to work for the energy companies as 'consultants' for a 700k bucks a year.

And how do we put up with this shit? We just do for now, like with all the other bullshit.

I understand.
It’s not like we don’t have nonsense rules here also.

The pendulum has a way of swinging back very hard.
Perhaps we will get satisfaction one day.