kingsdale wrote:Hi
I don’t know if this is what you want to know, but. We have a 3 bed house in Pano Akourdalia, it isn’t on the grid yet, so we are using alternatives for power.
We have 480watts of PV panels at 12v going to 600Amps of batteries for storage. We have an inverter that goes from 12v to 240v and then connects into the house wiring. We run a standard fridge freezer and all of our lights (which have low energy bulbs fitted) The hob is gas fired, and has a kettle on that.
In addition, There are network cable points around the house and as we do not have internet yet I have put a 12v supply through this and we have 12v low energy bulbs in standard lamps. The advantage of this is that we can turn off the inverter if we need to, (remember it is using power just being on) and still have lights available.
We supplement this with a 6Kva petrol generator, which we really only use if we need the washing machine or the electric oven, and it would only be on while this sort of appliance was in use.
The PV system is right at the limit of producing the energy we use and we could probably do with a couple more panels and batteries to be safe, or we could go for a low energy or gas powered fridge which would mean our system has more than enough capacity. We have used the house at various times of the year and found it was enough even in winter as the fridge is not having to work as hard.
I have brought all this out with me from the UK in a variety of ways – you wouldn’t believe what I pack in suitcases.... and installed it myself.
As and when we get connected to the grid, I will switch the inverter for a grid tie inverter. This will mean we use the power from the PV panels before we pull energy from the grid. There are different ways of connecting to the grid with the panels and getting either the installation grants or the money per kw generated as part of the co-generation scheme, however this usually involves the system being installed by one of the ‘approved’ installers and a hefty hike in the price of the system.
With hindsight (isn’t it wonderful) I would have done some things different in the build, a vertical ground source heat pump for example for the heating.
If you want any more info, please get in touch.
regards
Adrian
Hello Adrian & welcome!
Thank you for all the details. I'm a bit slow and overcautious when embarking on new projects, but this helps greatly.
Hubby's just convinced me that a diesel generator needn't be any more dangerous than a car engine running. Indeed, it seems you can run a house lighting system from keeping the car engine idling and it's as economical, over a few hours per day, as a generator. But, like you, the greatest sense of satisfaction will come from not using fossil fuels.
I've just bought a briefcase sized solar panel, a mini wind generator, a 12V leisure battery and will play around with my lab-sized prototype before scaling up to killer currents. I need to actually fit things together myself and see them functioning before they make any sense. I'm quite keen to build my own wind generator, for some reason -- I can't see why I have to buy one -- maybe a spare part from a plane? Then modify it to use the power from flowing water (I don't see why a 3m drop is essential
).
Anyway, I've got a little bit more reading up to do on "inverters" and then I may well have some more questions for you, so I hope you stick around.