Solar PV Performance Thread - Post your monthly output

Is there any alternative information app that works with the eddi/harvi? The myenergi app is very slow, has a limited display output and doesnt allow you use chose set windows of days to display generation etc. Looking at some of the displays being shown on here they give a much better display. Any recommendations?

With your Zappi if only charging from Solar this time year, why not reduce its max from 7kW to something closer to max you'd get from your panels !

3.8kwp with a 6kw Inverter

May 2023.

497kWh generated

50kWh imported

202kWh exported

Best day 30th with 24.7kWh. Worst Day 20th with 7.3kWh.

do you mean the zappi restarted and went to 'fast' mode charging immediately? i had that happen me so used some day units but there's a default start up mode you can set so i now have it set to eco plus on startup so it doesn't start immediately at full power if there is a power cut or the charger is cycled on/off.. might depend on the zappi version.. mines fairly new.

May stats for a 6kWp south facing array in North Dublin

Generated: 933.31kWh

Consumed: 767.37kWh

Exported: 193.36kWh

Imported: 151kWh (27kWh Day, 124kWh Night, taken from meter readings so slightly off the Solar statistics)

And some cost estimation

Electricity usage cost: €27.30

Standing charge: €25

Export: €33

Bill for May (Import+Standing charges-Export): €19.30

Estimated bill without solar: €224.19

Savings for May: €204.89

Fantastic month. 8.8kWp south facing Wicklow 5kWh battery

1260kWh generated, self use 803, exported 456

424kWh (33%) into EV

Imported 117kWh, more than half into EV

I estimated €2,292 annual savings giving just over 6 years payback (cost was around €15k)

That's horrendously optimistic however, so I doubt I'll achieve that. For example I was expecting to spend €10 on electricity in May and ended up spending €27

I've only 1 month of proper data so far so I'll have to wait a while to see how it goes

However I would be expecting the savings to be significant in winter still because I'll be charging the battery at night rate to avoid any expensive day rate electricity

3.1 kWp in Dublin (1.7 south, 1.4 west). 5 kWh battery.

431 kWh generation with 83% self use.

? kWh into battery, ? kWh out of battery

40 kWh imported, 10 of that EV charging

75 kWh exported.

No Eddi or immersion.

South Roscommon, 8.16Kwp, facing 210° at 35°, 9.6kWh battery

Total generation 1085.4kWh (prediction at 890.4kWh, last year 984kWh)

Consumed 793kWh (75% self use) was away for a few of the good days so exported more than normal.

Energy from Grid 1kWh

Energy to Grid 271kWh

To the Eddi 165kWh

To the Zappi 220.3Wh (all from solar)

To the Battery 154.15kWh

From the Battery 142.27kWh

Best day 31st with 54.7kWh

Worst day 21st with 15.2kWh

Energy exported would have generated €48.78 at Energia FIT rate if on a smart meter, we are D/N.

Only second time breaching the 1MWh with last August being the other one and this month being a record by 2kWh

Mildands, 8.4kwp, 4.4kw west (250 deg), 4kw east (70 deg), 5kw battery.

Production: 1038kwh vs Predicted production: 843kwh

Best Day 31st: 50kwh

Worst Day 21st: 17.1kwp

Exported: 609kwh

Imported: 106kwh

19th Month

Dublin - Lucan - May 23 - 7.12kW installed (S: 3.45kW, E: 2.41kW, W: 1.38kW). E&W Optimised. 5KWh Battery, (30 S & 22.5 E/W degree pitch).

Total Generation: 878kWh (414kWh self use (inc. battery), 464kWh to grid) (new generation record (797.1 previously))

Best Day: May 29th - 41.7kWh (new record (40.6 previously))

Worst Day: May 20th - 13.1kWh

Total Consumption: 439kWh (91% Solar: 9% Grid Import (39kWh))

Milestones & Info:

69kWh to Eddi for May

No import on 11 days

Passed 8MWh since install (Oct'21)

2023 - Monthly PV Savings :: Expected FIT €111.36 + Money Saved on Energy from PV :: €91.36 :: Total €202.72 for May. (FIT@0.24c/kWh, AvgUnitCstSaving@0.23c/kWh)

2023 - Annual PV Saving progress :: (Jan 49.41, Feb 87.25, Mar 92.66, Apr 138.62, May 202.72) = €570.66

2023 - Annual FIT totals :: (31 Feb, 112 Mar, 215 Apr, 464kWh May) :: Cumulating FIT €197.28

2022 - Last Year May :: Generation 796kWh, Consumption 411kWh

2022 - Annually Saved with PV = €809.39 + FIT below

2022 - Expected FIT since Feb 15th'22 €595.68* :: (Feb'22-Jan'23: Total 2482KWh) - FIT paid as of start of Feb'23 €581.49 (possibly includes 12KWh exported Jan'23)

Any thoughts on my third month?

897kWh for May

8kWp (4.8SE,3.2NW) Cavan

Best day 41.2kWh

Worst day 13.5kWh

Self use 251.4kWh

Exported 645.6kWh

I don't have a smart meter as I thought the general advice was not to get one.

I have a day / night meter.

Hi folks

We are nine months on the Solar trail now. Figures are in for the month of May from a 4Kw system on an even East : West split. Based in South Dublin. No battery. 5kW inverter:

• Total generated: 507kWh
• Highest day:  30th 25.24 kWh
• Lowest day: 14th  8.21 kWh

That’s up considerably from April which saw 340kWh generated. The movement through the seasons is really evident from the figures now. It’s great to see the numbers continuing to climb so significantly and enter the peak generation period. 

The sales blurb last year estimated a potential annual generation of between 3,600 - 3,900 kWh in a twelve month period. The current generation figure is 2,300 for the period August 2022 to-date. I plan to do a one year write up in August to summarise my experience. Will have the full year’s data from my App around 7th August. 

Cheers

g

I was just running the figures for you and don't want to derail this thread further. I think asking on the solar PV battery thread below and folks much wiser than me will give you the best opinions.