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£Package price£9,350Found in your quote
▥Solar system4.4kWp+ 5.2kWh battery
↗Estimated payback11.4 yearsInstaller estimate
What you might have missed
The few things worth checking before you sign
Not every blank is a problem. This section stays focused on the things most likely to affect the cost, what you’re getting, your protection or a claim you may be relying on.
3 things to check
1
Inverter
Inverter details found: Inverter included. The exact inverter model is not clear.
Check
2
Battery
Battery details found: 5.2kWh usable. The exact battery model is not shown on these pages.
Check
3
Savings & payback
The quote shows £820/year estimated savings · 11.4-year estimated payback. We could not see all the assumptions needed to sense-check those figures. Still not clear here: electricity price, export tariff, how much solar you are expected to use yourself, how the battery is expected to be used.
Check
01 / Understand your system
The numbers, translated.
Three useful ideas: how much your panels can produce, how much a battery stores, and what it can power at once.
☀Panels generate
Sunlight becomes electricity.
⌂Your home uses
Power the things running now.
▥A battery stores
Keep energy to use later, if storage is included.
Depending on your setup, spare electricity can charge the battery or go to the grid. The grid supplies any shortfall; some batteries can also charge from it.
MAKE
Solar panels
4.4 kWp
This describes the combined power rating of your panels, measured under standard test conditions. Actual output changes with the light and your roof.
10 panels × 440 W = 4.4 kWp. Calculated from the quote.
Roof direction, shading and the installation design affect what you actually generate.
STORE
Battery storage
5.2 kWh
This is how much electricity the battery stores for later. Think of capacity as the size of its energy tank.
5.2 kWh is stated as usable capacity.
The useful size depends on how much you can charge it and how much stored electricity your home will use.
DELIVER
Battery output
— kW
This tells you how much power the battery can supply at one time. It helps explain which appliances it could run together.
Output power is not visible here. Ask: “What could this battery run at the same time, and what is its continuous output in kW?”
Having a battery does not, by itself, confirm that your home will have power during a power cut. Ask about the installed backup arrangement.
Put these figures in the context of your home
If you have your electricity bill handy, add your annual use below. This is optional and isn’t saved.
Look for “annual consumption” or “estimated annual usage” on your electricity bill or energy account. Use the electricity figure in kWh, rather than the amount you pay. If you can’t find it, leave this blank.
Annual use helps put generation in perspective. It does not show when you use electricity.
Would this battery suit your home?
A battery can store electricity for use later, including in the evening. The right size depends on when you use electricity and how it will be charged.
Ask your installer: “Using my electricity usage, why have you recommended this battery size?”
Tell your installer about an EV, heat pump or changing household routine before accepting a design. Ask them to model your expected use, not just a typical home.
Understand the upfront cost. Question the forecast.
PAY
Your package price
£9,350
0% VAT stated in the quote
Confirm the selected package, exclusions and whether the price can change after a site survey.
For a useful price comparison, look at packages with similar equipment and installation work. You can compare two quotes with QuoteCalm.
GENERATE
Annual electricity
3,950 kWh/year
The electricity your installer expects the panels to produce over a year. Actual generation will vary.
Roof direction is not visible. A shading assessment is not visible on these pages.
An annual total hides seasonal variation. A good annual match with your use does not mean the system can meet your needs at every moment.
SAVE
Estimated annual benefit
£820
Annual savings stated by the installer.
11.4 years payback is stated. Ask what costs and assumptions it includes.
Check import/export rates, how much solar you use at home, battery losses, maintenance and replacements. Future tariffs and actual use can change the result.
What do the different warranties protect?
Panel product25 years stated
Covers product faults, subject to the terms.
Panel performance25 years stated
A defined output guarantee, not a promise about your bill savings.
Inverter10 years stated
Check parts, labour and replacement arrangements.
Battery10 years stated
Check retained-capacity, cycle or throughput conditions.
Installation work2 years stated
Separate from the equipment manufacturer’s cover.
These are stated terms, not independently verified cover. Ask who handles a claim, what is excluded and whether labour and call-out charges are covered.
Something looks wrong? Correct a key figure
Only change a figure you can check against the original quote. Leaving a field blank restores its originally extracted value when you apply corrections. Headline and usable battery capacity are separate fields.
Make the check useful
Questions worth sending your installer
These questions come directly from the things worth checking above. Ask for the answers in writing so you have a clear record before you commit.
1
Please confirm the exact inverter make and model and whether its 10-year warranty has any conditions.
2
Please confirm the exact battery model, usable capacity, charge/discharge capability and warranty that will apply to the installed system.
3
Please show me the assumptions behind the savings/payback estimate, including household usage, electricity price, export tariff, how much solar I’m expected to use at home and any shading assumption.
See the other checks behind this summary
·
Price
We found a package price of £9,350 with 5.2kWh of battery capacity shown. A simple solar £/kWp figure is not a fair way to judge a battery package, so we have not labelled the price high or low without genuinely comparable quotes.
Calculated from the figures shown
✓
Solar array
We found 4.4kWp stated system size · 10 panels · 440W each · Example · Illustrative 440 W panel.
?
Battery
Battery details found: 5.2kWh usable. The exact battery model is not shown on these pages.
?
Inverter
Inverter details found: Inverter included. The exact inverter model is not clear.
✓
Warranties
Warranty details found: panel product 25 years · panel performance 25 years · inverter 10 years · battery 10 years · installation work 2 years.
✓
Installation scope
Shown as included: Scaffolding, Grid connection paperwork, Monitoring, Final setup and testing.
?
Savings & payback
The quote shows £820/year estimated savings · 11.4-year estimated payback. We could not see all the assumptions needed to sense-check those figures. Still not clear here: electricity price, export tariff, how much solar you are expected to use yourself, how the battery is expected to be used.
✓
MCS reference
The quote mentions MCS. We have not checked the installer’s current MCS status as part of this document check, so verify it on the live register before committing.
✓
Consumer-code reference
The quote mentions RECC. A logo or reference in a document is not the same as checking current membership on the live register.
See the other details we found
Equipment and warrantiesPanel make/model: Example · Illustrative 440 W panelPanel product warranty: 25 yearsPanel performance warranty: 25 yearsInverter warranty: 10 yearsBattery usable capacity: 5.2 kWhBattery warranty: 10 yearsInstallation-work warranty: 2 years
What the installation includesScaffolding: Shown as includedGrid connection paperwork: Shown as includedMonitoring: Shown as includedFinal setup and testing: Shown as included
Savings assumptionsAnnual generation: 3,950 kWh
Finance and paymentsVAT: 0% VAT stated in the quote
If something is not listed here, it simply was not visible in what you uploaded. We do not assume the installer left it out of the full proposal.
A quick reminder about the limits of this check
QuoteCalm can help withWhat the uploaded quote saysMaths based on the figures shownDetails worth asking aboutQuestions to send the installer
A quote alone can’t tell usThe condition of your roofShading or cable routes that are not describedThe quality of future workmanshipWhether the system is technically ideal for your home
QuoteCalm is an independent information service, not a site survey, installer rating or financial recommendation. Think we have read a factual detail incorrectly? Correct the key figure above or tell us about it.
Have another quote?Check two quotes together and focus on the few differences and questions that actually matter.
