Views on Solar Quote please

AlanP_2

We are just starting to go down the road to Solar and have had this quote which I would welcome comments and opinions on please.

At the momemnt we are on a standard tariff but would explore alternative options to complement solar.

No EVs at present and no immediate plans in that regard. Main use of the electricity is a Jacuzzi that is on 24/7/365 (not very MSE I know but it's worth it to us).

Thanks

Quote £9983

Consumption 6600 kWh

Solar Panels:

Hengdian Group DMEGC Magnetics

8.835 kW Total Module Power

19 x 465 Watt Panels (DM465G12RT-B48HBW)

6,711 kWh per year

FoxESS EVO Series Battery

10.24kWh of Battery Storage

Fox ESS, 1 x EVO10 Battery 

FoxESS EVO Series Hybrid Inverter

8 kW of Inverter Power 

Fox ESS, 1 x EVO10-8H 

12 Years Warranty

A. Installation data
Installed capacity of PV system - kWp (stc)	8.835	kWp
Orientation of the PV system - degrees from South	Group 1: 6 panels with Orientation: 80 ° Group 2: 6 panels with Orientation: 80 ° Group 3: 4 panels with Orientation: 100 ° Group 4: 3 panels with Orientation: 10 °	°
Inclination of system - degrees from horizontal	Group 1: 6 panels with Tilt: 46° Group 2: 6 panels with Tilt: 43° Group 3: 4 panels with Tilt: 46° Group 4: 3 panels with Tilt: 41°	°
Postcode region	12
B. Performance calculations
kWh/kWp (Kk)	771.6	kWh/kWp
Shade Factor (SF)	0.984
Estimated annual output (kWp x Kk x SF)	6,711	kWh
C. Estimated PV self-consumption - PV Only
Assumed occupancy archetype	In Half Day
Assumed annual electricity consumption, kWh	6,600	kWh
Assumed annual electricity generation from solar PV system, kWh	6,711	kWh
Expected solar PV self-consumption (PV Only)	2,363	kWh
Grid electricity independence / Self-sufficiency (PV Only)	35.8	%
D. Estimated PV self-consumption - with EESS
Assumed usable capacity of electricity energy storage device, which is used for self-consumption, kWh	9.72	kWh
Expected solar PV self-consumption (with EESS)	4,383	kWh
Grid electricity independence / Self-sufficiency (with EESS)	66.0	%
E. Additional benefits from PV and EESS
EESS capacity not used for self-consumption	0.51	kWh
Total energy discharged per annum	7,101	kWh
Additional self-consumption for EV, heat pumps, diverters (only when present)	0.00	kWh

QrizB

They've quoted for cheap DMEGC panels (from a mass-market Chinese manufacturer) and a mid-market inverter/battery combo. I think the overall price is about right for the equipment on offer.

From the specs at tradesparky, the 465W panels aren't as quite tall as their 515W stablemates; if the 515W ones will fit your roof, the extra £11.29 per panel (£215 total for all 19) is probably worth paying. You should ask your installer about this.

In addition, they've calculated roughly 1/3 direct daytime consumption and another 1/3 via the battery, which (again) is the right sort of number.

Screwdriva

I agree with @QrizB - the brands on offer are lower end and not ones I would recommend in your use case. I would suggest comparing the above to a quote for 19 X Eurener 515W bifacial panels and a Tesla PW3 for £12.5K

While the DMEG/ Fox quote may appear cheaper at first glance, I'd suggest looking a bit closer:

• 19 X 515W Eurener Bifacial panels = 9.8KWp (vs. the quoted 8.8KWp with DMEG) →11+% more generation from an ethical, non-Chinese brand of panel.

• 1 X Tesla PW3 with 13.5KW of usable capacity (vs. the Fox battery with 9.7 KW usable capacity) → 39% more storage capacity from a far more capable battery inverter (nothing Fox sells comes close!) You will need that extra capacity if a Jacuzzi is running 24/7.

• The PW3's internal inverter will be set to 10KW (vs. the 8KW limit with the Fox), depending on your array design, which may allow for additional generation/ export should the G99 application yield a 10KW export limit.

• There is no mention of the workmanship warranty or if bird netting is included? It should be 10 years minimum and bird netting should always be included.

Hope this helps provide you with perspective! I'd skip installers peddling lower end brands and aim for quality brands of kit at the lowest possible price instead.