Solar Panels | Page 20 | Australian Frequent Flyer
Australian Frequent Flyer

Welcome to Australia's leading independent Frequent Flyer and Travel Resource since 1998!
Our site contains tons of information that will improve your travel experience.

Joining AFF is fast, simple & absolutely free - register now and take immediate advantage of these great BENEFITS.

Once registered, this box will disappear. And you will see fewer advertisements :)

Solar Panels

Quickstatus

AFF Supporter
Joined
Oct 13, 2013
Messages
7,361
It’s all about making electricity more expensive. Its the carbon tax you have without having a carbon tax. And at the same time paying over and above the cost of solar production making solar panels attractive. Makes sense if you see it as playing the long game. Don’t forget that at the time of your offer solar was minuscule in the scheme of things.
These days solar has accentuated the grid demand peaks of 6am and 6pm by pushing the quiet demand period of 10-2pm even lower so such an extent that the midday trough demand now looks like the 3am trough if Im reading the Aemo graphs right.
 
Last edited:

cove

AFF Supporter
Joined
Feb 15, 2008
Messages
11,443
With the end of the financial year approaching I was looking back four years to see our office/warehousing electricity cost has fallen by about $125,000. So solar and LED lighting for us has had a payback of under 3 years because we mostly work sunlight hours in our business. We did have an inverter fail in one warehouse this financial year but all the rest are working ok.
Have not been able to get a reasonable payback rate for a battery system so we have to wait for the price to drop by about half.
 

Quickstatus

AFF Supporter
Joined
Oct 13, 2013
Messages
7,361
If your supply more or less matches demand for the warehouse why consider batteries?
 

cove

AFF Supporter
Joined
Feb 15, 2008
Messages
11,443
There is a cafe /lunch bar that runs a cool room 24/7 and our computer room runs air conditioning 24/7. Apart from these we recharge our stock chasers and reach trucks overnight so they are ready for use in the morning. That isn’t every night for each unit but we always have some being charged somewhere in 5 sites with 7 buildings.
Next we may have some electric battery motor vehicles but for us that may be 3 years away as we are just completing our car fleet with the Toyota Camry Hybrids that take 3 to 4 months from order to arrival. They are running between 4.3 to 4.7 litres to go 100kms so our fuel bills are reducing.
We are close to not needing to consider batteries.
 

Quickstatus

AFF Supporter
Joined
Oct 13, 2013
Messages
7,361
With current demand profile I suspect I would net export at best about 30% to the grid. I’ll see how the game plays out. I would need about 5-7 Tesla 2 to time shift that 30% to the evening peak
 

cove

AFF Supporter
Joined
Feb 15, 2008
Messages
11,443
Looking forward to hearing how you go Quickstatus. Our home system has a slower payback because we are not always there.
Our Sydney home is getting a system but that will only cover the common areas rather than our apartment. The building is 9 floors so there are lots of common areas. Inside we changed the lights to LED and changed the washing machine to a more efficient unit.
 

Quickstatus

AFF Supporter
Joined
Oct 13, 2013
Messages
7,361
We already have LED lights. Next time I will not get a French Door fridge as they are at best 2 star. The 2x aircon units are the electric guzzlers. If I had a double storey house I would only need 1 as heat rises.
We had housesitters in January and their 7 day stint cost 1500kWh :mad:
 
  • Wow
Reactions: DC3

cove

AFF Supporter
Joined
Feb 15, 2008
Messages
11,443
We were hit with the lucky stick when our two sons grew up and left home. At peak we were up at $1600 every two months and now about $400 with three of us at home. Our sons had their own air conditioners in their bedrooms........
 

Quickstatus

AFF Supporter
Joined
Oct 13, 2013
Messages
7,361
I should have never put in ducted aircon. I was tossing up between ducted and individual units for each room/area. But as the house already had vents in the ceiling from a previous dodgy ducted aircon system, I went for ducted.

The individual units would have been better.
 

cove

AFF Supporter
Joined
Feb 15, 2008
Messages
11,443
Yes we went for individual air conditioners but the problem then is the boys operated their own controls 24/7.
 

VPS

AFF Supporter
Joined
Apr 2, 2011
Messages
2,649
Flights
My Map
I should have never put in ducted aircon. I was tossing up between ducted and individual units for each room/area. But as the house already had vents in the ceiling from a previous dodgy ducted aircon system, I went for ducted.

The individual units would have been better.
What makes you say that - I'm thinking about building and want to get rid of individual units because I prefer the ducted that is quieter and less blowy
 

downgraded

Member
Joined
Apr 2, 2014
Messages
301
What makes you say that - I'm thinking about building and want to get rid of individual units because I prefer the ducted that is quieter and less blowy
A bunch of reasons are normally suggested (I don't have first hand experience)
- The central unit consumes a lot of power that a more focused approach avoids.
- you end up heating/cooling areas you're not using so it's just wasted energy/money.
- generally ducting is very leaky and poorly insulated so energy losses are high.
- it depends upon the central unit but for heating gas is now much less efficient than the electric options.
 
  • Informative
Reactions: VPS

Quickstatus

AFF Supporter
Joined
Oct 13, 2013
Messages
7,361
What makes you say that - I'm thinking about building and want to get rid of individual units because I prefer the ducted that is quieter and less blowy
The problem with ducted are many.
Individual areas cannot have different temperatures.
Zones are not really zones. Because while there may be ducts in individual rooms, the return ducts are somewhere else.

So lets say you have 4 bedrooms. And each bedroom is on its own zone and each bedroom has its own return duct. Lets say 3 zones are off and only your bedroom zone is on. So the aircon blows air only into your bedroom zone at 21C. And the other 3 bedrooms are at 10C (in winter). Air coming out of the ducts then has to go somewhere. The aircon sucks air through the return ducts. However most designs have the return ducts all open. so while the aircon sucks air back through the return duct of your bedroom, it also sucks air from the return ducts of the other rooms. So 21C air is mixed with 10C air. Where does the rest of the air in the 21C bedroom go?. Some go out of the house, the rest goes into the cold bedrooms as those bedrooms air is returned.

Most ducted aircon designs have return ducts in a corridor. So the aircon blows 21C into your bedroom. The return air goes out into corridor, mixes with colder air then returned. So while they say there are zones, you are still recycling air from other parts of the house and heating/cooling air in a much larger volume than a zone would imply

Individual air cons means each room can have their own temp and recycle their own air - that is a true zone.
 
Last edited:
  • Informative
Reactions: VPS

cove

AFF Supporter
Joined
Feb 15, 2008
Messages
11,443
We are delighted with our home airconitioning which is in 9 systems over our 3 levels.
At the office we go for about 22 in Perth but in Adelaide and Melbourne they want it hotter.
I go tropo in high humidity.
This winter we haven’t been heating our outside pool to 27 degrees as it is currently close to zero most early mornings. We are using our solar for morning air conditioning .
 

Quickstatus

AFF Supporter
Joined
Oct 13, 2013
Messages
7,361
The other issue with ducted is illustrated by @cove . When his boys left home his aircon bill went down. You can’t do that to any great extent with ducted for the reasons above but with individual unit definitely.
 

Hvr

AFF Supporter
Joined
Jun 27, 2007
Messages
8,622
Had the solar people here today to discuss installing panels on my roof. A friend has them and his power bill has decreased dramatically. He's been very happy with them and the company so he recommended them to me.

One thing though, I have to get the power meter board updated. Still, with a list of really good tradies to call, the electrician is able to do it on Wednesday. Hope to have it done by the end of the month and get the rebate.
 
  • Like
Reactions: RB

amaroo

AFF Supporter
Joined
Sep 22, 2011
Messages
11,044
Flights
My Map
We loved the ducted heating we had in Sydney.... how I miss natural gas.
 

Quickstatus

AFF Supporter
Joined
Oct 13, 2013
Messages
7,361
Had the solar people here today to discuss installing panels on my roof. A friend has them and his power bill has decreased dramatically. He's been very happy with them and the company so he recommended them to me.

One thing though, I have to get the power meter board updated. Still, with a list of really good tradies to call,
Our meter needs changing to one compatible for NFiT.
Panels are in but the meter changeover won’t occur until 16July. Has to be done via Energy Australia
 

cove

AFF Supporter
Joined
Feb 15, 2008
Messages
11,443
The delays can be annoying but once you get running it is time to start smiling.
 

Quickstatus

AFF Supporter
Joined
Oct 13, 2013
Messages
7,361
I discovered the 25kW inverter can actually be “overclocked” to 30kW without voiding the warranty.
I was planning to add another 5kW a bit later to the existing 20kW on the roof but I have space for 7kW more.
But I’m not sure if overclocking is such a good idea.
 

AFF on Air Podcast

  • The Qantas Oneworld Award – AIR015
    Sat, 13 Jul 2019 02:07:50 AEST
      Learn how to fly around the world using your Qantas Frequent Flyer points as Matt chats to James Green, an award travel consultant at Frequent Flyer Solutions. This episode ...
  • Qantas Frequent Flyer Changes – AIR014
    Sat, 29 Jun 2019 00:40:35 AEST
      Last week, Qantas announced a major shake-up to its Qantas Frequent Flyer program. In this episode, former Head of Loyalty at Malaysia Airlines, Mark Ross-Smith, joins Matt ...
  • jb747’s Stellar Career with Qantas – AIR013
    Sat, 15 Jun 2019 03:00:41 AEST
      In this special edition of the podcast, Matt chats to John Bartels (a.k.a. jb747) about his flying career with Qantas, the A380, the QF30 incident, flight training, retirem ...
  • Cheap Virgin Australia Business Class – AIR012
    Sat, 01 Jun 2019 03:05:28 AEST
      Find out how to get cut-price Virgin Australia Business Class tickets by buying and redeeming Etihad Guest miles! This episode also includes some listener Q&A and an interv ...
  • Star Alliance Status – AIR011
    Sat, 18 May 2019 09:39:41 AEST
      Find out how to easily earn Star Alliance Gold status with several different frequent flyer programs! This episode also includes an interview with John Blom, Australia’s ...

Community Statistics

Threads
82,044
Messages
1,897,711
Members
49,889
Latest member
Willjet
Top