Renewables: "talking 'bout my generation"

tunnel

Yup, billy no mates tonight :rotfl:

groovyf

A woeful 2.8kWh today... compared to yesterday's almost 11. Was hoping the fog was going to lift like it did yesterday... no such luck! Swing and roundabouts I guess

On the plus-side, I've bought a Belkin WeMo switch and plugged the oil-filled rad into it, so have better control over heating the living room now when I'm not in.

Oscargrouch

groovyf wrote: »

A woeful 2.8kWh today... compared to yesterday's almost 11. Was hoping the fog was going to lift like it did yesterday... no such luck! Swing and roundabouts I guess

On the plus-side, I've bought a Belkin WeMo switch and plugged the oil-filled rad into it, so have better control over heating the living room now when I'm not in.

Thought you were going down the Optiplug and Wattson for automatic control.....:rotfl:

tunnel wrote: »

Its very quiet in here tonight...anything to do with the cr&p weather today, nobody want to post?

I got an Hawaii today, thats an Hawaii 5.0kWh not O's

I got a Hawaii + 1.92 O's :beer: :beer:

Dreaming again...... just the 1.92 O's.....
............

legoman62

No sun here either...only 1.05 O's today:D

jimmyboy420

2.75 O's today. I was disappointed, but looking at everyone else's performance I should be pleased!

shavy65

I like the look of the Wemo Switch! Just don`t know what I`d use it for though....the kettle maybe
Poor first couple of days up here, 1.9 O`s and 1.2 O`s. Sadly it ain`t looking any better today either. Brightening up next week by looks of things though.

groovyf

Oscargrouch wrote: »

Thought you were going down the Optiplug and Wattson for automatic control.....:rotfl:

All in good time, my friend... I needed a quick/cheap-ish gadget fix though!

Martyn1981

Hello folk, looking for some help, which is generation based ... sort of.

I'm just doing some housekeeping on the PV FAQ, and I'm not happy with the estimated leccy savings figure:

Savings will vary from household to household, but could be approx. £100 (probably in the £80 to £160 range). Larger savings are possible, but will require higher daytime consumption.

Firstly I usually suggest £120 (not £100) so ...... oops!

Secondly, I'm not sure what a fair average should be. Is £120 fair or should it be a bit higher.

I'm happy with the minimum figure of £80, assuming just baseload savings for an average of 9 hours per day (11 - 2 assuming an hour each end for low daylight). Then allowing for 20% of the time being such bad weather that even 200W isn't possible. That leaves 9hrs * 0.2kW * 365 days * 80% * 15p = £79.

Looking back at my original system, the 3.58kW ESE, my savings were approx £150. I'd expect a south facing system to save more (better performance, better generation in the winter months) and since our consumption wasn't particularly high (approx 3,000kWh pa) again I'd suspect a higher user to do better.

All of this makes me think that the £160 figure isn't that hard to reach. I'm tempted to change the sentence to:

"£130 (probably in the £80 to £180 range)."

but I'm really trying to make sure it's a fair figure as I don't want any potential PV'ers to be misled by overly optimistic figures.

Also, going back 2 years, twin tariffs were more common, so many people would have been saving against lower tier 2 leccy prices, perhaps 10p/kWh, so things have/are changing.

What do others think, how have you got on?

Thanks.

Mart.

zeupater

Hi Mart

My thoughts are that whilst it's possible for someone who either has a high base-load or is in during the day to save an average of 3kWh/day (or more), the average household probably would struggle unless they are really serious with the use of automated diversion, timers etc.

As you mention, tiered tariffs aren't available anymore, but that should really make little difference as the tier1 differential covered the standing charge, which now must be applied as a separate line item. The best unit price deals around here seem to be around 14p/kWh, so applying somewhere between £112(800*.14) and £140(1000*.14) would give a decent basic spread for something like a 4kWp system, so an average of £126 ... but you'd still need to do something seriously more than just power the fridge & freezer during the day to achieve even the lower end of the spread ....

I'd still be happy to work on £100/year and advise that anything over that is a bonus to be worked for, but with anything over £120 (4kWp) I'd really start to feel quite uncomfortable for an average user to use in their calculations without them first committing to a change to their energy usage profile.

HTH
Z

tunnel

Hi Mart,


My energy supplier has just dropped my monthly premium/payment from £101 to £92, a £9 difference. So 12 x 9 is £108. I'm taking as electric saving as my gas usage hasn't changed at all, still used for heat and water.


Now how much "extra" on top of the £108 needs to be added, I'm not sure, but with 2 systems running before I swapped to them would suggest a similar amount..maybe around £110-20.


We are high users, the wife canes it everytime the sun pokes its head out. I'd like to think my "savings" are around £250 per annum now my Final system(yes no more room) is up and running


On a lighter note I had an Hawaii half a 5.0kWh today