Solar quote review
Sample household, Surrey, BC
Independent review. No installer pays us.Sample. The household, installers and quotes are invented.
Quote A, Example Solar Co. (invented)
Do not sign this version
5 things to fix before signing, 9 to ask about, 3 that check out.
Financed as quoted, the payments add up to $61,669. Over 25 years the panels would save about $37,443 on bills, with rates rising 3% a year.
| Figure | The quote says | Our check | What it means |
|---|---|---|---|
| Years to pay back | 9.5 | 19.3 | 9.8 years longer, with rates rising 3% a year. At flat rates it is 25.1 years. |
| First-year saving | $2,950 | $1,131 | $1,819 a year less. Surplus power is paid at 10 cents, and 17% of this system's output would be surplus. |
| Power in a year | 10,400kWh | 9,240kWh | The quote promises 13% more than this roof is likely to make. |
| Price per watt | $3.63 | Usual in BC$2.50 to $3.30 | $2,860 over the top of the usual range for a system this size. |
The quote that holds up
Checks out Quote B, Sample Sun Electric (invented)
1 of the 3 quotes has something to fix before signing, and 1 more needs answers in writing.
On our numbers Quote B has both the lowest solar price per watt ($2.97) and the shortest payback (14.6 years).
Do these first
- Quote A. Please redo the savings and payback under Rate Schedule 2289, BC Hydro's current self-generation rate.
- Quote C. Please confirm the price holds while I wait for your written answers and for BC Hydro approval.
- Quote A. Please show how the first-year saving was calculated: kWh used on site, kWh sold, and the rate for each.
Three quotes, side by side
Every line uses one method for all 3 quotes. Solar-only price takes out batteries and extra electrical work, so the price per watt compares like with like.
| Line | AExample Solar Co.invented | BSample Sun Electricinvented | CDemo Rooftop Powerinvented |
|---|---|---|---|
| Total price | $31,900 | $27,400 | $36,200 |
| Solar-only price | $31,900Same as the total | $20,900Less $6,500 battery. GST is extra | $33,800Less $2,400 electrical panel upgrade |
| System size | 8.8 kW20 panels | 7.04 kW16 panels | 10.56 kW24 panels |
| Price per watt | $3.63Fix: Fix before signing | $2.97OK: Checks out | $3.20OK: Checks out |
| Power in a year | 10,400 claimedFix: Fix before signing9,240 kWh expected | 7,500 claimedOK: Checks out7,392 kWh expected | 11,600 claimedOK: Checks out11,088 kWh expected |
| First-year saving | $2,950 claimed$1,131 on our numbers | $940 claimed$923 on our numbers | Not stated$1,340 on our numbers |
| Payback | 9.5 years claimedFix: Fix before signing19.3 years on our numbers | 17 years claimedOK: Checks out14.6 years on our numbers | 16 years claimedAsk: Ask about this18 years on our numbers |
| Rebate | $5,000 claimedAsk: Ask about thisWording: "guaranteed" | $5,000 claimedOK: Checks outWording: "subject to BC Hydro approval and available funding" | $5,000 claimedOK: Checks outPre-approval step mentioned |
| Deposit at signing | 50%Ask: Ask about this | 10%OK: Checks out | 25%OK: Checks out |
| Workmanship warranty | 2 yearsAsk: Ask about this | 10 yearsOK: Checks out | 5 yearsOK: Checks out |
| Our verdict | Fix: Fix before signingDo not sign this version5 to fix, 9 to ask, 3 check out | OK: Checks outThe numbers hold up0 to fix, 0 to ask, 8 check out | Ask: Ask about thisGet these answers in writing first0 to fix, 2 to ask, 6 check out |
Fix before signing Ask about this Checks out Payback on our numbers assumes rates rise 3% a year and surplus is paid at 10 cents per kWh.
Price against the BC benchmark
Quote A sits at $3.63 a watt, $2,860 above the top of the usual range for 8.8 kW. Quote B is at $2.97. Dollars per watt, installed, before rebates.
Where the 36 sources come from
- BC Hydro and the BC Utilities Commission15
- Federal data: NRCan, Statistics Canada, the Canada Energy Regulator5
- Province of BC and Consumer Protection BC5
- City permit records, Victoria and Vancouver2
- IEA national survey of solar in Canada1
- Published cost guides and press5
- Manufacturer and trade warranty documents3
-
$3.63Fix before signing
Quote A
$31,900 for 8.8 kW. Usual at this size: $22,000 to $29,040.
-
$2.97Checks out
Quote B
$20,900 for 7.04 kW. Usual at this size: $17,600 to $23,232.
-
$3.20Checks out
Quote C
$33,800 for 10.56 kW. Usual at this size: $26,400 to $34,848.
Production and payback
Worked for Quote A: 8.8 kW, 9,240 kWh a year expected, against 14,500 kWh of household use from the hydro bill.
Summer surplus earns less
BC Hydro nets each two-month bill. Power used at home is worth 12.7 cents. Surplus is paid at 10 cents.
1,562 kWh sold at 10 cents, 17% of output
Household useSolar used at homeSurplus sold
Payback takes twice the claim
Savings start at $1,131 a year. The quote's 9.5 years needs about $2,830 a year.
19.3 years with rates rising 3%, 25.1 if they stay flat
Surrey is at the low end for BC sun
NRCan puts Surrey at 997 kWh per kW a year. This review uses 1,050 from an address-level estimate, a little above NRCan's town figure.
On the roof
Quote A puts 20 panels of 440 W on the south-facing roof. This is how a layout of that size sits around a skylight and two vents.
- 20 panels × 440 W
- 8.8 kW of panels, the size Quote A is priced on.
- South, 25°
- The way the roof faces and its slope, as used in the production estimate.
- 9,240 kWh a year
- Expected from this layout, against 10,400 in the quote.
- North is up
- Panel, 440 W
- Setback from the roof edge
- Skylight and vents kept clear
Questions to send your installer
Each finding in the report comes with a question, written so you can paste it into an email. These go to Example Solar Co. (invented).
- Please redo the savings and payback under Rate Schedule 2289.
- Please show how the first-year saving was calculated: kWh used on site, kWh sold, and the rate for each.
- What electricity price increase and export rate did you assume to get your payback figure?
The sample stops here
The full report for these three quotes runs to 24 pages. Its contents:
- The short version1
- Your quotes side by side2
- What your quotes say3
- Rebate and rule checks5
- Contract and sales practice6
- Quote A in detail7
- Quote B in detail12
- Quote C in detail15
- What the quotes do not show17
- Emails to send your installers18
- What we could not check21
- What to do next, in order22
- What we assumed and where the numbers come from22
- Plain words23
- About this review24
For each quote: what we found; the price, like for like; power and savings under today's BC Hydro rate; is this the right size; financing and payment stages.