Solar PV - [not] Great Expectations!
- Thread starter Ollyfp
- Start date
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That really depends upon how much solar input there is.
Let me know how he got all that kit installed for free please. I might go for it too.
A couple of questions or three:
Which direction do the panels face?
What is the nax kW output of the panels?
What is the max kW output of the inverter?
What kind of electricity tariff are you on?
Import and export rates vary considerably depending on what tariff you're on, and TOU tariffs can make a great difference...
Which direction do the panels face?
What is the nax kW output of the panels?
What is the max kW output of the inverter?
What kind of electricity tariff are you on?
Import and export rates vary considerably depending on what tariff you're on, and TOU tariffs can make a great difference...
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You really need a 4kw+ system to make this stuff work otherwise the variable input immersion heater controller hardly does anything unless the system is at max output, which wont be often. From a cost point of view, it's the batteries that save you money as you can charge overnight at very low cost.
Well what I never mentioned was he lives in Poland
He had nstalled it all his self there were grants available out there but he refused them as according to him when you accept a grant out there the pencil pushers are entitled to inspect and poke there noses in ??
Very clever fella he has dual nationality and works in the Uk 3 or 4 months of the year his wife and kids stay in Poland
He is also looking into generating leccy via a stream on his property ???
It's amazing how much people are prepared to self flagellate and throw money away to be seen to be green and hopefully save a fiver.
No more amazing that someone getting to a point in life where they think they know it all, think every innovation is worse than what went before, think that everything they own / have / do is the pinnacle of what's possible....................
Rules of thumb, assuming typical use and south facing panels.
You'll use around a third of the power and send two thirds back to the grid.
You'll generate around 2,500kWh a year.
At 24p a kWh for use and 15p for export you should make/save around £450 a year.
You'll use around a third of the power and send two thirds back to the grid.
You'll generate around 2,500kWh a year.
At 24p a kWh for use and 15p for export you should make/save around £450 a year.
I think this depends if you have a decent export tariff. There is an argument that financially and environmentally export is better than use of solar diverter for hot water heating. Quite interesting video about this here
With decent export rates like those on Octopus the business case for hot water tanks is awful. You're only saving a tiny amount and the installation costs are fairly high. Batteries are also hard to justify if the difference between purchase and sale prices is only 9p.
We don’t get a FIT rate so it made perfect sense for us
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You really need batteries now the feed in tariffs are almost non existent. My brother had his fitted about 12 years ago , didn't have batteries but his FIT was about 49p per kw, sold it all to the grid and just paid the standard rate per kw from his supplier, which was way less than 49p per kw. He sold up so it is irrelevant to him now. With batteries you can use solar, and then use cheap night rates to charge them as well, so even in winter you will be saving.
No more amazing that someone getting to a point in life where they think they know it all, think every innovation is worse than what went before, think that everything they own / have / do is the pinnacle of what's possible....................
Sorry for having an opinion.
How's that £51,000 Kia doing?
Not surprised you're more than a little tetchy.
Unless you account for the price of the batteries.
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