Renewables: "talking 'bout my generation"

shafeeq

2.14666 O's today. Pleasantly suprised with the generation

Oscargrouch

shafeeq wrote: »

2.14666 O's today. Pleasantly suprised with the generation

And so you should be from your recent performance....
Keep cramming lots of numbers in, called the feel good factor..

3.120000000 O's for me..

jackieblack

Pitiful generation over the last few days has cemented the fact that, with 6 days of the month left, March generation is currently only 60% of target
Previous worst (% of target) ever month was Feb 2011, only 72% of target generated
However, this was folowed by a spectacular March, April, May & June 2011, generating 130, 148, 137 & 126% of target respectively
Fingers crossed:D

BTW, while I remember, don't forget to take your 'rate change' readings on March 31st everyone!
With pre-31st March generation being so awful, any auto/pro-rata'd calculation later will almost certainly result in a less-than-favourable result.

EricMears

jackieblack wrote: »

Pitiful generation over the last few days has cemented the fact that, with 6 days of the month left, March generation is currently only 60% of target
Previous worst (% of target) ever month was Feb 2011, only 72% of target generated
However, this was folowed by a spectacular March, April, May & June 2011, generating 130, 148, 137 & 126% of target respectively
Fingers crossed:D

BTW, while I remember, don't forget to take your 'rate change' readings on March 31st everyone!
With pre-31st March generation being so awful, any auto/pro-rata'd calculation later will almost certainly result in a less-than-favourable result.

In our case, we've had 60% of the 'old' pvgis forecast but only 55% of the 'new improved estimates'. But pro-rata the 55% goes up to 67% for a full month and (hopefully !!!!) the next six days will be better than the average of the previous 25.

If Oscar can have his own units, I'd like to propose one of my own.

The "E" value is obtained by calculating your earnings over a period and the cost of keeping the SPs in place (in my case that's lost ISA interest, others might use HP payments or even lottery ticket purchases).

Yesterday was therefore a 5.5 E day and March to date has been 3.3 Es. My worst ever month (Jan this year) was 1.13 Es; May 2012 was 8.5Es

Always better to give electricity companies a 'real' reading than depend on their estimates ! When prices are rising you usually find they've 'accidentally' underestimated meter readings for changeover date and on the odd occasion when prices have fallen (there have been some) blow me if the forecast wasn't too high.

John_Pierpoint

How do you measure the cost of the PV panels, my inverter has not gone phut yet, but it will sometimes in the first 25 years ?
Mind you the money in the ISA is probably suffering taxation by inflation, at a figure that eats more than the nominal interest rate.

EricMears

John_Pierpoint wrote: »

How do you measure the cost of the PV panels, my inverter has not gone phut yet, but it will sometimes in the first 25 years ?
Mind you the money in the ISA is probably suffering taxation by inflation, at a figure that eats more than the nominal interest rate.

If the inverter actually goes wrong then you'd need to recalculate but until it does it's reasonable to ignore the cost. Every chance that it will last at least ten years and then be replaced at considerably less cost than today's estimates. Reasonable chance it will last far longer than that.

And of course there's always the possibility that SPs themselves will be struck by lightning or have some falling object smash them.

I like the point about inflation-erosion of the ISA. Arguably I can claim my lost interest as zero and report "E" values of infinity.

shafeeq

1.98 O's today. . can't complain anymore. . should be grateful of any generation compare to last few weeks lol

legoman62

Weather similar to yesterday but, a little more sun so 2.7 O's it is.
Output = 4000kWh since Nov 2011 install:D

Oscargrouch

EricMears wrote: »

In our case, we've had 60% of the 'old' pvgis forecast but only 55% of the 'new improved estimates'. But pro-rata the 55% goes up to 67% for a full month and (hopefully !!!!) the next six days will be better than the average of the previous 25.

If Oscar can have his own units, I'd like to propose one of my own.

The "E" value is obtained by calculating your earnings over a period and the cost of keeping the SPs in place (in my case that's lost ISA interest, others might use HP payments or even lottery ticket purchases).

Yesterday was therefore a 5.5 E day and March to date has been 3.3 Es. My worst ever month (Jan this year) was 1.13 Es; May 2012 was 8.5Es

OK for you part timers, who wants to work that one out on a daily basis :doh:.

EricMears wrote: »

If the inverter actually goes wrong then you'd need to recalculate but until it does it's reasonable to ignore the cost. Every chance that it will last at least ten years and then be replaced at considerably less cost than today's estimates. Reasonable chance it will last far longer than that.

And of course there's always the possibility that SPs themselves will be struck by lightning or have some falling object smash them.

I like the point about inflation-erosion of the ISA. Arguably I can claim my lost interest as zero and report "E" values of infinity.

You have already described the downfall of such a long winded, precarious calculation; thank you. I would add: If the Inverter went wrong your previously calculated figures would also then be wrong and you would have to edit possibly 6 years of posts on this thread.... I think the new system of a very simple one of O's is much easier to calculate and post and purely takes into account, performance of panel generation, irrespective of that panel size in kWp, which this thread was started for in the first place.

2.56 O's today, hope that can be worked out easily... ie = X 2.5 in kWh That's complicated

Martyn1981

shafeeq wrote: »

1.98 O's today. . can't complain anymore. . should be grateful of any generation compare to last few weeks lol

You got me, 1.97 O's yesterday.

Forecast for the next week is pretty good, especially tomorrow, so expect more rain and snow.

Today's forecast is pretty good from 10am onwards, but been generating 500W+ since 7am (700W now), so fingers crossed for a good one.

If I hit average for the next 5 days, will still close at 78%, a record for me.

Mart.