The cascade effect

Fueltheburn
Posts: 93
Joined: Fri Sep 08, 2023 12:14 pm

The cascade effect

#1

Post by Fueltheburn »

I have been thinking about this a lot recently and visiting Joe's home puts it into stark context. I can see what I need to do, In the same way as looking at Nowtys setup.
His home is like playing Wheres Wally with solar panels.
Available real estate has been utilised where possible in different orientations and deviations to cover low sun and the rising and setting positions of the day.

This has obviously taken a number of years to implement but has grown in the same way that compounding interest works. Money saved from the original setup gets re-invested into the next set of panels.
As these panels save more money, it frees up more money.
Money saved is then invested into batteries. Batteries then allow the storage and resale of electric at a higher price point and so your money works harder for you.

The way I see this is that the extra money saved goes towards car repayments which then opens up the possibility of cheap rate electric and the savings and resale of electric accelerates further.

By the time you end up with a heat pump - you have free heating for your home, free car travel and also get paid enough to pay off your new electric car monthly payments :whako:

If I can get my steel portal up soon (covered in panels)
I go from paying:
-£150/ month car storage.
-£300/month electric in depths of winter.
-£300/month in fuel.

To potentially:
£0 car storage.
£0 electric/reaching parity.
£0/month in fuel.
+£100/month from export of electric.
+£60/month for storing other folks cars or bike.

This is a wild swing of expenditure to potential income.
Should have dealt with this far earlier :facepalm:
3kW FIT Solar
0.8kW balcony solar.
2,372 W of turbine at Whitelaw Brae
6kw Panasonic air to air heat pump for downstairs.
2 WBS. Stovax 8kw and 5kw Morso squirrel
Rointe D series in 2 bedrooms and bathroom.
Aiming to go fully electric....
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Joeboy
Posts: 8636
Joined: Mon May 31, 2021 4:22 pm
Location: Inverurie

Re: The cascade effect

#2

Post by Joeboy »

It was great to see ye. You're going at it and planning well. Can't ask much more than that. I found that Enphase & Hoymiles additions wiped out all the background and small use equipment. This leaves the batteries or export to take the main stage on the bigger arrays.

But they wouldn't look as good without the many small one panel systems taking care of business and doing the sweeping up. Thanks for the Vermiculite, see ye for a pint when ye get back. :xl:
15kW PV SE, VI, HM, EN
42kWh LFPO4 storage
7kW ASHP
200ltr HWT.
73kWh HI5
Deep insulation, air leak ct'd home
WBSx2
Low energy bulbs
Veg patches & fruit trees
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Stinsy
Posts: 3295
Joined: Wed Jun 02, 2021 1:09 pm

Re: The cascade effect

#3

Post by Stinsy »

Fueltheburn wrote: Thu Feb 13, 2025 7:05 pm I have been thinking about this a lot recently and visiting Joe's home puts it into stark context. I can see what I need to do, In the same way as looking at Nowtys setup.
His home is like playing Wheres Wally with solar panels.
Available real estate has been utilised where possible in different orientations and deviations to cover low sun and the rising and setting positions of the day.

This has obviously taken a number of years to implement but has grown in the same way that compounding interest works. Money saved from the original setup gets re-invested into the next set of panels.
As these panels save more money, it frees up more money.
Money saved is then invested into batteries. Batteries then allow the storage and resale of electric at a higher price point and so your money works harder for you.

The way I see this is that the extra money saved goes towards car repayments which then opens up the possibility of cheap rate electric and the savings and resale of electric accelerates further.

By the time you end up with a heat pump - you have free heating for your home, free car travel and also get paid enough to pay off your new electric car monthly payments :whako:

If I can get my steel portal up soon (covered in panels)
I go from paying:
-£150/ month car storage.
-£300/month electric in depths of winter.
-£300/month in fuel.

To potentially:
£0 car storage.
£0 electric/reaching parity.
£0/month in fuel.
+£100/month from export of electric.
+£60/month for storing other folks cars or bike.

This is a wild swing of expenditure to potential income.
Should have dealt with this far earlier :facepalm:
You get extra benefits too.

Saving sessions for example. Once you have the battery system as well as a bazillion smartplugs you can make £10-20 every SS. And power hours too, you can make the most of them once you have batteries and control systems in place.

The other day someone was telling me how expensive EVs are to run. I explained that my electric bill is less than £100 a month and that includes fueling 2x EVs. (I didn’t dare tell him that the £100 also includes heating my house.)
12x 340W JA Solar panels (4.08kWp)
3x 380W JA Solar panels (1.14kWp)
6x 2.4kWh Pylontech batteries (14.4kWh)
LuxPower inverter/charger

(Artist formally known as ******, well it should be obvious enough to those for whom such things are important.)
Mart
Posts: 1417
Joined: Mon Jun 14, 2021 1:17 pm

Re: The cascade effect

#4

Post by Mart »

The virtuous circle is something that really excites me. Each product helps the others, and leans on them too, to increase benefits.

I appreciate there are costs involved, but some will be instead of, not additional, but the whole is definitely greater than the sum of the parts - PV, HP/A2A, batts, BEV, cheap rate.

I love having a small powerstation on my roofs (and garden).
8.7kWp PV [2.12kWp SSW + 4.61kWp ESE PV + 2.0kWp WNW PV]
Two BEV's.
Two small A2A heatpumps.
20kWh Battery storage.
Ken
Posts: 550
Joined: Mon Jul 26, 2021 10:07 am

Re: The cascade effect

#5

Post by Ken »

Problem is the chicken and the egg. When you are struggling to pay the mortgage and fuel bills where is the capital investment. True though that as time goes on these techs are becoming more affordable. Probably take out a lone, if one can, to fit PV is the starting point.
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Stinsy
Posts: 3295
Joined: Wed Jun 02, 2021 1:09 pm

Re: The cascade effect

#6

Post by Stinsy »

Ken wrote: Fri Feb 14, 2025 2:55 pm Problem is the chicken and the egg. When you are struggling to pay the mortgage and fuel bills where is the capital investment. True though that as time goes on these techs are becoming more affordable. Probably take out a lone, if one can, to fit PV is the starting point.
While some people are genuinely destitute, the majority prioritise having the latest smartphone, or a new car on finance, or whatever.

My point is that you need a delayed-gratification mindset to be on this journey. The majority just don’t seem to be wired that way.
12x 340W JA Solar panels (4.08kWp)
3x 380W JA Solar panels (1.14kWp)
6x 2.4kWh Pylontech batteries (14.4kWh)
LuxPower inverter/charger

(Artist formally known as ******, well it should be obvious enough to those for whom such things are important.)
User avatar
Joeboy
Posts: 8636
Joined: Mon May 31, 2021 4:22 pm
Location: Inverurie

Re: The cascade effect

#7

Post by Joeboy »

Stinsy wrote: Fri Feb 14, 2025 3:00 pm
Ken wrote: Fri Feb 14, 2025 2:55 pm Problem is the chicken and the egg. When you are struggling to pay the mortgage and fuel bills where is the capital investment. True though that as time goes on these techs are becoming more affordable. Probably take out a lone, if one can, to fit PV is the starting point.
While some people are genuinely destitute, the majority prioritise having the latest smartphone, or a new car on finance, or whatever.

My point is that you need a delayed-gratification mindset to be on this journey. The majority just don’t seem to be wired that way.
Exactly Stinsy. I've been hearing the "no money" excuse for apathy and indifference my whole life and railed against it for the same time span. I could have a single panel/single hoymiles nice set up for well under £200, journey begins. I could do the same with a 2nd hand enphase m250 or similar and a city plumbing panel for £110.

It's all a mindset. Save 50p a week and in just over 4 years you have the first system. I'm not joking. If an adult can't save that a week this isn't the game for them, best of luck to them in life.

P.S, wear a jumper and a hat indoors and save 50p a day on electric, the first PV system is live in Months, not years. Make it a game not a chore?

None of this is meant as a dig at anyone but simply put, PV is one of the best ways to free yourself from the yoke.
15kW PV SE, VI, HM, EN
42kWh LFPO4 storage
7kW ASHP
200ltr HWT.
73kWh HI5
Deep insulation, air leak ct'd home
WBSx2
Low energy bulbs
Veg patches & fruit trees
AGT
Posts: 1107
Joined: Sat Jan 29, 2022 11:26 am

Re: The cascade effect

#8

Post by AGT »

Yes, I hear people in my work taking loans for cars, cars costing more than their salary…..
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nowty
Posts: 6081
Joined: Mon May 31, 2021 2:36 pm
Location: South Coast

Re: The cascade effect

#9

Post by nowty »

You don't even need savings, just be inventive, my story started 14 years ago and I partly paid for my first FIT system with a 0% credit card and then card tarted for several years until it was all paid off through a combination of FIT income and subsequent savings on bills.

Years later I bought my Pylontech batteries and other solar panels with a cheap bank loan because the bank kept pestering me with loan offers at 3% interest. I was going to apply as home improvement but ironically "solar panels" were specifically not allowed so I just ticked the car loan box instead. :lol:

And as others have said, you can start with a couple of panels plus cheap inverter for buttons. You could even replace one take out coffee per week for the free Greggs / Nero coffee from Octopus and in a year that will save you enough to start with a single panel and micro inverter. There really is no excuse.
18.7kW PV > 110MWh generated
Ripple 6.6kW Wind + 4.5kW PV > 31MWh generated
7 Other RE Coop's
105kWh EV storage
60kWh Home battery storage
40kWh Thermal storage
GSHP + A2A HP's
Rain water use > 520 m3
ecogeorge
Posts: 423
Joined: Sun Oct 31, 2021 7:23 pm
Location: Gloucestershire

Re: The cascade effect

#10

Post by ecogeorge »

Not yet up to other peoples achievments ,.......... have done tracker / gshp/ turbine etc in a previous life but just want to add my 2p....
JUST START ......
I started in 1996 ish .... bough a 30w pv panel , made a circit using zenner diode etc and used it to charge a rechargeable torch that otherwise sat on permanent mains trickle........
Then bought 60w BP panels @ >£300 each !!!!!!!!!!!!!!!!!!-used micro inverters ......... changed light bulbs for new fangled cfl's ..........
How times change.
PV soooooooooooo cheap -put 1,2 or 3 panels up use cheap chinese micro inverter.
Start a spreadsheet on consumption .......
Freezers on timeclocks ..........
i'll get my coat ....... :geek:
1750w Vertical PV micro inverters
3800w almost horizontal/south
Aarrow Becton 7 Woodburner
Dream 3kw ASHP only connected to summer Pool.
Allotment heavy clay.
1.784kw Kirk Hill
0.875kw Derril Water
0.2kwWhitelaw Brae
1kw Harlow Hydro.
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