Question 1

How much does the Fox ESS PowerQ (2 x EQ4000) cost installed in Canada?

Accepted Answer

Installed price for the Fox ESS PowerQ (2 x EQ4000) in Canada is approximately $11,000 to $14,000 CAD as of 2026. Includes the integrated hybrid inverter.

Question 2

What is the Ontario HRSP rebate on a Fox ESS PowerQ (2 x EQ4000)?

Accepted Answer

The Ontario Home Renovation Savings Program (HRSP) pays $300 per kWh of installed capacity, capped at 50% of eligible project cost or $5,000, whichever is lower. On the Fox ESS PowerQ (2 x EQ4000) (7.94 kWh), this works out to approximately $2,382 to $2,382. After rebate, net installed price is $8,618 to $11,618. Battery must be installed with a new solar PV system; homes on net metering do not qualify.

Question 3

What is the Fox ESS PowerQ (2 x EQ4000) usable capacity and RTE?

Accepted Answer

Usable capacity: 7.15 kWh. Round-trip efficiency: Above 95%. Chemistry: Lithium iron phosphate (LFP). Usable capacity is what the battery delivers after depth-of-discharge limits.

Question 4

Does the Fox ESS PowerQ (2 x EQ4000) include an inverter?

Accepted Answer

Yes. The Fox ESS PowerQ (2 x EQ4000) includes an integrated hybrid inverter — no separate inverter purchase is required.

Question 5

What is the Fox ESS PowerQ (2 x EQ4000) warranty?

Accepted Answer

Warranty: 10 years, 70% retention with throughput limit. Cycle life: Throughput-limited warranty. Warranty terms typically require professional installation by a certified installer and adherence to manufacturer's operating envelope.

Question 6

Who is the Fox ESS PowerQ (2 x EQ4000) best for?

Accepted Answer

Homeowners prioritising high round-trip efficiency and a compact integrated system. Key tradeoff: Lower nameplate capacity than most competitors. Throughput warranty caps lifetime energy through the battery.

Question 7

Where can I compare the Fox ESS PowerQ (2 x EQ4000) to other Canadian batteries?

Accepted Answer

See our full comparison at /best-solar-batteries-canada, which shows the Fox ESS PowerQ (2 x EQ4000) alongside every other major battery available in Canada on price, capacity, warranty, and rebate.

Fox ESS PowerQ (2 x EQ4000) in Canada 2026: Specs, Price, Rebate

Short answer

Fox ESS PowerQ (2 x EQ4000) Full Specs

Ontario HRSP Rebate Math on the Fox ESS PowerQ (2 x EQ4000)

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Brand	Fox ESS
Chemistry	Lithium iron phosphate (LFP)
Nameplate capacity	7.94 kWh
Usable capacity	7.15 kWh
Round-trip efficiency	Above 95%
Inverter	Integrated
Installed price (CAD)	$11,000 to $14,000
Ontario HRSP rebate	$2,382 to $2,382
Net installed price after HRSP	$8,618 to $11,618
Warranty	10 years, 70% retention with throughput limit
Cycle life	Throughput-limited warranty