Feed In Tariff?

[RodTungsten]

While we digress in Physics, Lise Meitner (+ Hahn= fission) is buried in our local parish and at the weekend the Wee Woman dragged me up to the Uffington White Horse to the spot where Klaus Fuchs passed atom secrets to the Ruskies - topical eh?

 

[Zep]

Mega = M or 1,000the Unit
m = milli or 1,000th the unit

I'm now going to get some superglue for Catman's head.

Oh and it was Fermi not Feynman who was known for his ability to make good approximate calculations...

Fixed that for you.

 

[Rspiller60]

Battery storage for my house for what I'm looking at is around 4-5k, no need to go to Tesla for something overly expensive that does the same as a 'non brand name project'.

I was looking at circa 7-8KW to cover the winter months when generation is lower, yes I will be feeding the grid in the summer (maybe, aircon uses a lot of energy).

When I get the quote I'll let you know.

We spend about £1400 a year on electricity, so if we become independent of the grid (other than the odd occasion) then I estimate a £12k outlay, if you account for energy cost inflation, the system should pay for itself in around 6-7 years.

Looking at setting up something very similar so keen to see where you end up if you don't mind sharing?

We're 100% electric so PV plus panels in large house seems to make sense now.

 

[midlifecrisis]

Fixed that for you.

mega​	M​			1 000 000​	million​
kilo​	k​			1 000​	thousand​
hecto​	h​			100​	hundred​
deka​	da​			10​	ten​
​	​			1​	one​
deci​	d​			0.1​	tenth​
centi​	c​			0.01​	hundredth​
milli​	m​			0.001​	thousandth​

 

[Zep]

​

mega​	M​			1 000 000​	million​
kilo​	k​			1 000​	thousand​
hecto​	h​			100​	hundred​
deka​	da​			10​	ten​
​	​			1​	one​
deci​	d​			0.1​	tenth​
centi​	c​			0.01​	hundredth​
milli​	m​			0.001​	thousandth​

Only if the base unit is a Wh. If your base unit is a kWh, it’s 1000 times. It’s all a matter of perspective

 

[Zep]

For those thinking about being “off grid” with an 8kW battery, I would urge you to look at how you would deploy this stored power. Your average 48v home storage battery will deploy at around 800watts peak.

It will run base load pretty well, but you will be “partially on grid” when you:

Boil your kettle
Turn on your (electric) oven
Run your immersion heater
Use your tumble drier
Use your washing machine
Have a power shower

There is a lot more to this malarkey than just moving electrons around, it’s how quickly you need to do it too. There are, without doubt, benefits to solar and storage. While you might well be off grid when the sun shines, a battery will really only be peak shaving.

 

[Rspiller60]

For those thinking about being “off grid” with an 8kW battery, I would urge you to look at how you would deploy this stored power. Your average 48v home storage battery will deploy at around 800watts peak.

It will run base load pretty well, but you will be “partially on grid” when you:

Boil your kettle
Turn on your (electric) oven
Run your immersion heater
Use your tumble drier
Use your washing machine
Have a power shower

There is a lot more to this malarkey than just moving electrons around, it’s how quickly you need to do it too. There are, without doubt, benefits to solar and storage. While you might well be off grid when the sun shines, a battery will really only be peak shaving.

I think there are a number of options now which offer far greater output - 5kw for example from an 8kwh Powervault 3.

Still very new to the concept however so I suspect it isn't quite as simple as this.

One thing I am unclear on is if the full generated amount is available directly from the panels?

All things being perfect, 10 x 300w panels, does that mean the 3kwh oven is good to go?

 

[stikey]

were doing 5kw battery systems £ 2.8k 10kw 5.3k solar edge are the high end ones or sonnen
the fit tariff its index linked to what ever the rate it was when you registered it
we are installers for ev box charge master pod point rolec and mi energy zappi
domestic zappi and solar edge are the one s
we have some that chase the cheepist price on the open market at night if the pv battery runs short at night
you can just fit the battery and charge cheep at night without the pv

 

[safrane]

Gosh what a lot of faf to save a few quid... less than a decent meal out or a tank of fuel... can't be bothered as the look of solar panels is enough to put me off fitting them or buying a house with them let alone the pathetic trade off

 

[Zep]

I think there are a number of options now which offer far greater output - 5kw for example from an 8kwh Powervault 3.

Still very new to the concept however so I suspect it isn't quite as simple as this.

One thing I am unclear on is if the full generated amount is available directly from the panels?

All things being perfect, 10 x 300w panels, does that mean the 3kwh oven is good to go?

The panels are rated at their peak performance, so in the middle of the day, in direct sunlight, yes, they would just about run a 3kW oven. To do it outside of these conditions, you would need more panels.

Battery prices are currently all over the place, so prices will be variable - in an upward direction.

 

[stikey]

fit tariff pays me 20k a year tax free index linked paid for my strad

 

[stikey]

few quid
fit tariff pays me 20k a year tax free index linked paid for my strad

 

[Ebenezer]

kWh...the Unit of electricity supplied to your home. Nowadays it's around 30p/kWh after shooting up from 15p-20p kWh

So doesn't look like it's really worth it at the moment? Or am I missing something?
It seems to work for you @stikey but what would be the investment for an ordinary punter to get what you have now?
Eb

 

[midlifecrisis]

few quid
fit tariff pays me 20k a year tax free index linked paid for my strad

How big is your array? And when did you install?

 

[CatmanV2]

How big is your array? And when did you install?

And how much did it cost?

C

 

[RodTungsten]

Gosh what a lot of faf to save a few quid... less than a decent meal out or a tank of fuel... can't be bothered as the look of solar panels is enough to put me off fitting them or buying a house with them let alone the pathetic trade off

For me it’s not really about the money:
Promoting use of renewable sources ( yes I know none of them are renewable- thermodynamics says so)
More PV leaves more fossil stuff for our cars and bikes
New tech interests me (feed the inner nerd!)

I will be pushing up daisies by the time the PV pays off but inset panels saved money on tiles as the roofers could not source enough to cover the roof of an extension.

 

[Phil H]

How big is your array? And when did you install?

Ye gods, that's a bit personal isn't it?

 

[RodTungsten]

I am afraid that mine’s a bit small but the Wee Woman doesn’t complain as it boils her kettle regularly!

 

[midlifecrisis]

Ye gods, that's a bit personal isn't it?

We're all good friends here!

 

[stikey]

i did 2 roofs 50kw each 200 modules each and 3 roofs at 4kw 16 modules each cost me 85k total as the fit tariff went down i just did 2 larger roofs
3 x 4kw one s at high rate 2011 40p per kw 3.8p export then a 2 x 50kw ones at 12p a kw and 4p export
50kw ones generate 46000kwh per year and 48000 kwh per year on avarege the 4kw ones do about 3500 kwh per year

modules then were we were using were 250watt today there 360 -405 watt modules we try to get 5-10kw on a domestic roof on average

if you don t have the roof space you can just fit an ac coupled battery with a programmed battery controller draw at cheep night rate on the open market every 30 mins then use cheep electric in the day
6-12 K for a good pv install then 2.3k - 7.5k for the domestic battery install

they have just brought out a 40kw hydrogen residential battery storage unit the will run the average house for 3 days on one charge
sold out till 2024 within the first few weeks