Never lose power.
Milliseconds after the grid fails, your home is on battery. No flicker. No fuel. No noise. The EP Cube 2.0, made by Canadian Solar — installed by our own Master Electricians.
Our solar was installed four years ago by a different company. When we asked them about adding battery backup, they said they couldn’t figure out the integration. Stellar got it done. The EP Cube ties into our existing solar and our Generac standby, and the system manages itself, solar by day, battery at night, generator as final backup. We don’t worry about outages anymore.
Solar, battery, grid, and Generac, integrated and self-managing.
Four modes. Fully automatic. Tap a card.
Power outages are getting worse.
One extended winter outage can cost more than the battery that prevents it.
Extreme Weather
Ice storms, severe winters, and heat waves cause outages lasting hours or days. Frequency is increasing every year across Alberta.
Frozen Pipes: $5,000–$15,000
When your furnace fan stops, pipes freeze and burst. Insurance doesn't always cover the damage if you weren't home to prevent it.
Spoiled Food: $300–$800
Fridge and freezer contents start spoiling within 4 hours. A deep freeze full of meat can mean hundreds lost in a single outage.
Sump Pump Failure: $3,000–$10,000
When power goes out in spring, your sump pump stops. Basement flooding follows. The EP Cube keeps it running automatically.
Ranges drawn from Insurance Bureau of Canada water-damage averages and Alberta property-claim data. Full cost breakdown
Automatic protection in milliseconds.
Grid drops, battery takes over. Grid returns, it hands back. You do nothing.
1. Outage Detected
Grid power drops. The EP Cube detects it in milliseconds.
2. Instant Switchover
Built-in hybrid inverter switches your home to battery. No flicker.
3. Home Stays Powered
Fridge, furnace fan, lights, sump pump, Wi-Fi — all keep running.
Switchover spec per the official EP Cube 2.0 datasheet: seamless. See it live at your free assessment.
Monitor Everything From Your Phone
Charge level, consumption, outage alerts — iOS and Android.
What size does your home need?
Four taps. We’ll size it.
How big is your home?
This helps us estimate your electrical load.
What must stay powered during an outage?
Select all that apply. More loads = larger battery.
How long should your backup last?
Think about the longest outage you'd want to ride through.
Do you have solar panels?
If yes, your battery can recharge from the sun during outages.
What's included in every installation:
Get your exact quote — free, no obligation.
We'll confirm the right size, assess your electrical panel, and give you the exact all-in price for your home.
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No spam. A Stellar team member calls within 24 hours.
Design your backup. To the hour.
Tap what stays on. Pick a size. See exactly how long you last.
Written all-in quote · a real person calls within 24 h · no spam, ever. 550+ Alberta installs · BBB A+
✓ Design received.
We’ll call within 24 hours with your written all-in price. In a hurry? (780) 200-5265
Your runtime at every size — tap a bar to switch
Typical result: a winter “essentials” load in an Alberta home — fridge, deep freezer, furnace fan, sump pump, 10 LED lights, Wi-Fi, phones, and security cameras — averages roughly 530 W. At 90% usable capacity that runs approximately 8 hours on a 5 kWh EP Cube 2.0, 17 hours on a 10 kWh, 25 hours on a 15 kWh, and 34 hours on a 20 kWh. Pairing the battery with solar panels recharges it each day, extending backup through multi-day outages.
How long each size runs your home.
Worst-case math — every load running non-stop. Real homes do better; the Designer models that.
EP Cube 2.0 — 5–20 kWh per unit, in stock now
| Appliance | Draw | 5 kWh | 10 kWh | 15 kWh | 20 kWh |
|---|---|---|---|---|---|
| Continuous output | — | 3.0 kW | 8.0 kW | 11.5 kW | 11.5 kW |
| Fridge + Freezer | 150W | ~30 hrs | ~60 hrs | ~90 hrs | ~120 hrs |
| Furnace Fan | 500W | ~9 hrs | ~18 hrs | ~27 hrs | ~36 hrs |
| LED Lights (10) | 100W | ~45 hrs | ~90 hrs | ~135 hrs | ~180 hrs |
| Sump Pump | 800W | ~6 hrs | ~11 hrs | ~17 hrs | ~22 hrs |
| Essential Bundle* | ~1 kW | ~4.5 hrs | ~9 hrs | ~13 hrs | ~18 hrs |
EP Cube 1.0 — sold out; reference for the hundreds of Alberta homes running one (7.6 kW continuous, all sizes)
| Appliance | Draw | 9.9 kWh | 13.3 kWh | 16.6 kWh | 19.9 kWh |
|---|---|---|---|---|---|
| Fridge + Freezer | 150W | ~59 hrs | ~80 hrs | ~100 hrs | ~119 hrs |
| Furnace Fan | 500W | ~18 hrs | ~24 hrs | ~30 hrs | ~36 hrs |
| LED Lights (10) | 100W | ~89 hrs | ~120 hrs | ~149 hrs | ~179 hrs |
| Sump Pump | 800W | ~11 hrs | ~15 hrs | ~19 hrs | ~22 hrs |
| Essential Bundle* | ~1 kW | ~9 hrs | ~12 hrs | ~15 hrs | ~18 hrs |
*Essential Bundle = fridge, freezer, furnace fan, 10 LED lights, sump pump, Wi-Fi, and phone charger drawing ~1 kW continuously — a worst-case simultaneous load. 90% usable capacity (≈95% LFP depth × ≈95% conversion). With normal cycling, real-world runtime is typically longer; solar recharges the battery daily.
EP Cube by Canadian Solar.
Made by Canadian Solar — one of the largest solar and storage companies on earth.
Most stable lithium chemistry — far higher thermal-runaway threshold than NMC. Tested to UL 9540A.
Waterproof and dustproof. Operates from -10°C to 50°C. Indoor or outdoor.
5 kWh modules (EP Cube 2.0). Expand capacity anytime. Up to two units in parallel — 40 kWh residential cap per CEC Rule 64-918.
Battery (EP Cube 2.0)
Capacity: 5–40 kWh per unit, in 5 kWh steps
Chemistry: LiFePO4 (Lithium Iron Phosphate)
Module size: 5 kWh per module
Warranty: 10 years / 6,000 cycles (≥80% retained capacity)
Inverter (built-in)
Continuous output: 11.5 kW (15–40 kWh); 8.0 kW (10 kWh); 3.0 kW (5 kWh)
Motor start: 185 A LRA (15–40 kWh)
Switchover: seamless via Smart Gateway
PV input: 6 MPPTs — no separate solar inverter needed
CEC efficiency: 96.5%
Warranty: 10 years
Installation
Location: attached garage (typical); detached garages assessed for minimum operating temperature
Mounting: Wall-mounted
Permitting: Included
Inspection: City inspection included
Workmanship warranty: 5 years (10-year Premium tier available)
EP Cube comes with a 10-year warranty — see all coverage → · Official EP Cube 2.0 datasheet (PDF, V1.2 — every spec on this page checked against it) →
Two generations. Same Stellar standards.
EP Cube 2.0 is what we install today. Every 1.0 since 2021 stays fully supported.
EP Cube 2.0
Upgraded hybrid inverter (11.5 kW continuous), capacity flexibility from 5 kWh to 40 kWh per single unit, integrated Smart Gateway.
One all-in number, in writing, at your free assessment — we don’t post prices we can’t honour. Size yours in the Designer →
Get my EP Cube 2.0 quote →EP Cube 1.0
The proven platform that built our battery track record — hundreds of Stellar installs across Alberta since 2021. Now sold out at the supplier.
Sold out at the supplier. Every installed 1.0 stays fully supported — and can expand with a paired unit.
Own a 1.0? Get support →Alberta homes: 5–20 kWh per unit, 40 kWh cap across two units (CEC Rule 64-918); 25–40 kWh single-unit SKUs are commercial. Powerwall 3 vs EP Cube deep-dive →
EP Cube 2.0 vs Tesla Powerwall 3 vs a generator.
We sell the EP Cube. Here’s the comparison anyway — including where the others win.
| EP Cube 2.0 | Tesla Powerwall 3 | Whole-home generator | |
|---|---|---|---|
| Capacity per unit | 5–40 kWh, in 5 kWh steps | 13.5 kWh fixed (27 kWh with two) | Unlimited — runs on fuel |
| Continuous output | 11.5 kW (15 kWh+ sizes) | 11.5 kW on-grid; up to 15.4 kW off-grid on an 80 A breaker | 10–26 kW typical |
| Motor-start surge | 185 A LRA | 185 A LRA | Engine-driven |
| Solar input | 6 MPPTs built in — no separate inverter | Integrated solar inverter | None |
| Switchover | Seamless, automatic | Seamless, automatic | 10–30 s startup blackout |
| Cold rating | -10°C to 50°C (attached-garage install) | -20°C to 50°C | Cold-weather kit needed for -30°C starts |
| Works with a generator | 2-wire start generator input built in | Via Backup Gateway 2 | Is the generator |
| Fuel & maintenance | None | None | Fuel + ~$200–450/yr servicing |
Where Powerwall 3 wins
More off-grid headroom (15.4 kW vs 11.5 kW with proper breaker sizing), a wider -20°C cold rating, an IP67 flood-resistant enclosure, and the strongest brand recognition in the category. If you know you need exactly 13.5 or 27 kWh, it’s the simpler pick.
Where the EP Cube 2.0 wins
Capacity flexibility — start at 5 kWh and grow in 5 kWh steps to Alberta’s 40 kWh cap instead of committing to fixed 13.5 kWh jumps. It matches Powerwall 3 on on-grid output and motor-start surge, has 6 solar MPPTs built in, and is installed here by our own in-house Master Electrician crew.
Where a generator wins
Week-plus outages, if you keep fuel on hand and maintain it. The trade: a 10–30 second blackout at every outage, noise against Edmonton’s 50 dBA nighttime bylaw, and ongoing servicing. Already own one? The EP Cube’s generator input means it’s not either/or. Full 10-year math →
Weighing your battery options? Full Powerwall 3 vs EP Cube 2.0 deep-dive →
Pair your battery with solar.
Charges from the sun by day. Runs the house at night. Already have solar? It integrates — and CEIP financing can cover the battery when bundled.
The price you approve is the price you pay — or you don’t pay at all.
Everything is confirmed at the free site visit. Anything extra is quoted in writing first — approve it, or cancel free.
Included in every price
EP Cube 2.0 system · full install by our Master Electrician–led crew · engineering & permits · city inspection · app setup & warranty registration
Confirmed at the site visit
Panel capacity · breaker space · wire run length · floor space for 25–40 kWh dual-tower configs · detached-garage feasibility & temperature
Four steps. Done in 4–6 weeks.
Inspect electrical panel, verify location, confirm final price. Free, no obligation.
We handle all drawings, permits, and utility paperwork.
Mount, wire, connect to panel, configure switchover. ~1 day.
City inspection, activation, app setup. You're protected.
Battery backup, installed in your community.
Same crew, same written quote, the right municipal permit — every time. Add to existing solar → · Who’s qualified? →
Battery backup FAQ.
Free 15-minute Edmonton battery assessment.
Panel, placement, size, exact written price — confirmed in 15 minutes. No obligation.
Refer a neighbour. Get paid. Or pass it forward.
Refer a homeowner who installs with Stellar: $500 per battery, $100 per solar kW, $100 per EV charger — as cash, credit, or a gift to them.
The next outage isn't a question of if.
It's when.
Free assessment. Exact written price. No obligation.