one21
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Post by one21 on Jan 24, 2019 13:57:12 GMT
Another consideration is energy saved when older buildings are replaced with modern. Apparently, many new builds are so energy efficient - well insulated and serviced by heat recovery systems that the residual heat from electrical appliances is sufficient for heating purposes. If older properties could be brought up to somewhere near modern standards, our energy requirements would significantly reduce.
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registerme
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Post by registerme on Jan 29, 2019 18:01:14 GMT
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duck
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Post by duck on Jan 29, 2019 18:09:09 GMT
No but I do have a lot of experience of Nuclear Reactors
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Post by captainconfident on Jan 29, 2019 18:22:03 GMT
First I've seen. See the big up-front discount if you opt into "network services"? I.e. they install a two-way flow gate to the grid so the battery can be added to the general supply at peak periods of fed into at times of overproduction? If I see similar here in Belgium I'd do it because in the package offered they replace your solar panel invertor for free and mine is beyond the point when it was supposed to go wrong.
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registerme
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Post by registerme on Jan 29, 2019 19:16:44 GMT
My gut says it's probably a good idea. My head asks "why don't they present any numbers at all, even if only indicative (as they did when I bought the panels from them)"?
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Post by captainconfident on Jan 29, 2019 19:58:36 GMT
I was talking to a chap who worked at a power station, and he said they now have some sea containers full of clapped out EV car batteries in the car park, with an anode and a cathode plumbed onto the top & the batteries inside wired in series. This is kept charged and used at peak times. Apparently unusable EV car batteries still have enough potential storage value for this to be useful.
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Steerpike
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Post by Steerpike on Jan 29, 2019 20:16:21 GMT
It is not entirely clear how grid services affects the local domestic storage and discharge.
However, a quick calculation for my 4kW system (that averages about 770kWh per kW per annum) for a 4kWh battery with an installation cost of about £3.5k (with grid services) I could expect to save about £1.4k over the 10 year warranty period, so a net loss of about £2k (or about £3.2k for an 8kWh battery).
By storing cheap rate electricity (would need to have a E7 meter installed, not sure of the cost?) and offsetting the cost of a new inverter (which my system will probably require in the next few years) as the Powervault comes with one, probably these losses could be reduced but not eliminated.
I like the concept of distributed backup storage but don't feel inclined to subsidise it.
If it was £2.5k including an E7 meter instead of £3.5k without E7 I think I would bite.
YMMV
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Steerpike
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Post by Steerpike on Jan 29, 2019 20:20:28 GMT
I was talking to a chap who worked at a power station, and he said they now have some sea containers full of clapped out EV car batteries in the car park, with an anode and a cathode plumbed onto the top & the batteries inside wired in series. This is kept charged and used at peak times. Apparently unusable EV car batteries still have enough potential storage value for this to be useful. The Powervault 3 eco uses clapped out EV batteries, I think they are somewhat less powerful, not sure about cost and warranty compared with the standard Powervault 3.
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Godanubis
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Anubis is known as the god of death and is the oldest and most popular of ancient Egyptian deities.
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Post by Godanubis on Jan 29, 2019 20:22:34 GMT
We are All Doomed as Fraser used to say. With global warming, Brexit, Stray asteroids, sunspots and aliens we won’t be around long enough to see anything built, let alone a nuclear power station ☢️
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registerme
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Post by registerme on Jan 29, 2019 20:26:20 GMT
We are All Doomed as Fraser used to say. With global warming, Brexit, Stray asteroids, sunspots and aliens we won’t be around long enough to see anything built, let alone a nuclear power station ☢️ In which case I know what I will spend the rest of the year doing. None of which passes the forum rules!
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Godanubis
Member of DD Central
Anubis is known as the god of death and is the oldest and most popular of ancient Egyptian deities.
Posts: 2,011
Likes: 1,013
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Post by Godanubis on Jan 29, 2019 20:34:08 GMT
We are All Doomed as Fraser used to say. With global warming, Brexit, Stray asteroids, sunspots and aliens we won’t be around long enough to see anything built, let alone a nuclear power station ☢️ In which case I know what I will spend the rest of the year doing. None of which passes the forum rules! You might be lucky and get a good looking sex starved alien invader to distract you from Armageddon
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