Never lose power.
The EP Cube is a whole-home battery backup system installed by Stellar Upgrades across Edmonton and Alberta. It detects power outages in milliseconds and switches your home to stored battery power automatically — no flicker, no manual startup, no generators. Two product generations now available: EP Cube 1.0 (9.9–19.9 kWh, 7.6 kW continuous) at posted Edmonton pricing, and the new EP Cube 2.0 (5–40 kWh per unit, 11.5 kW continuous, 6 MPPTs) on consultation pricing while 2.0 install pricing is being finalized. Both: LiFePO4, NEMA 4X, in-house Red Seal-supervised install. Made by Canadian Solar.
So thrilled with this company. Our system was installed over a year ago and it was the best decision we ever made. We used to pay $600 to $800 in bills, but now we pay nothing to the utility company.
Power outages are getting worse.
Alberta’s grid faces extreme weather, aging infrastructure, and surging demand. Extended outages cost Alberta households $2,000–$15,000+ in spoiled food, frozen pipes, sump pump failure, and hotel stays. Damage cost ranges drawn from Insurance Bureau of Canada water-damage averages and Alberta property-claim data. Full Edmonton battery cost breakdown →
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.
Automatic protection in milliseconds.
The EP Cube monitors your grid connection 24/7. When power drops, it takes over instantly. When the grid returns, it switches back seamlessly. No buttons to press, no fuel to buy.
1. Outage Detected
Grid power drops. EP Cube detects it in under 20 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.
📱 Monitor Everything From Your Phone
Real-time battery charge level, power consumption, and backup status. Get alerts when the grid goes down. The EP Cube app works on iOS and Android.
This is a real Stellar EP Cube install in a Sherwood Park garage.
Every EP Cube battery on this page is installed by our Red Seal Master Electrician and in-house crew — same team from quote to commissioning. No subcontractors. No out-of-province dispatch.
Garage installation is the standard placement for Alberta winters. EP Cube’s NEMA 4X enclosure handles outdoor too, but attached garages stay above the –10°C operating threshold even at –30°C outside.
- Master Electrician of record on every electrical permit
- Filed under Canadian Electrical Code Rule 64-918 + Alberta STANDATA Variance 21-ECV-064-900-ESS
- 20 kWh per single ESS unit / 40 kWh aggregate per dwelling residential cap respected on every install
- EPCOR / FortisAlberta / ATCO / EQUS interconnection paperwork handled in-house
What size does your home need?
Answer 4 quick questions. We'll recommend the right EP Cube size for your home and show you exactly what's included in every installation.
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.
No spam. A Stellar team member calls within 24 hours.
How long each size runs your home.
All four sizes deliver 7.6 kW continuous output — enough to simultaneously power your fridge, freezer, furnace fan, lights, sump pump, Wi-Fi, phone chargers, and TV. The difference is how long they keep running.
| Appliance | Draw | 9.9 kWh | 13.3 kWh | 16.6 kWh | 19.9 kWh |
|---|---|---|---|---|---|
| Fridge + Freezer | 150W | ~66 hrs | ~88 hrs | ~110 hrs | ~132 hrs |
| Furnace Fan | 500W | ~20 hrs | ~26 hrs | ~33 hrs | ~40 hrs |
| LED Lights (10) | 100W | ~99 hrs | ~133 hrs | ~166 hrs | ~199 hrs |
| Sump Pump | 800W | ~12 hrs | ~16 hrs | ~20 hrs | ~25 hrs |
| Essential Bundle* | ~1 kW | ~10 hrs | ~13 hrs | ~17 hrs | ~20 hrs |
*Essential Bundle = Fridge, freezer, furnace fan, 10 LED lights, sump pump, Wi-Fi, and phone charger running simultaneously. Actual runtime varies with usage.
EP Cube by Canadian Solar.
The EP Cube is manufactured by Eternalplanet, a subsidiary of Canadian Solar — one of the largest solar and energy storage companies in the world. It won Japan's Good Design Award for its modular, stackable design.
Safest lithium chemistry. No thermal runaway risk. UL 9540A certified.
Waterproof and dustproof. Operates from -10°C to 50°C. Indoor or outdoor.
3.3 kWh modules. Expand capacity anytime. Up to 3 units in parallel for 59.9 kWh.
Battery
Capacity: 9.9 / 13.3 / 16.6 / 19.9 kWh
Chemistry: LiFePO4 (Lithium Iron Phosphate)
Module size: 3.3 kWh per module
Cycle life: 6,000+ cycles at 80% DoD
Warranty: 10 years
Inverter
Type: Built-in hybrid inverter
Continuous output: 7.6 kW
Switchover time: <20 milliseconds
PV input: Up to 4 MPPT, 16A per string
Warranty: 10 years
Installation
Location: Garage (attached or detached)
Mounting: Wall-mounted
Permitting: Included
Inspection: City inspection included
Workmanship warranty: 5 years
Two generations. Same Stellar standards.
EP Cube 2.0 is now in our Alberta inventory alongside the original EP Cube 1.0. Both are installed under the same Master Electrician supervision, the same in-house crew, the same warranty backing. Pick the size and generation that fits.
EP Cube 1.0
Proven hybrid inverter and battery platform. Hundreds of Stellar installs across Alberta since 2021.
9.9 kWh installed price. Up to $24,723 for 19.9 kWh single-unit max. Less $1,000 when bundled with new solar. Full transparent pricing →
Find my EP Cube 1.0 size →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.
EP Cube 2.0 install pricing is being finalized for Alberta. We will not post a number until it’s locked. Free assessment includes confirmed all-in 2.0 pricing for your specific home.
Get my EP Cube 2.0 quote →Not sure which generation? Read our EP Cube 2.0 vs Tesla Powerwall 3 deep-dive → — the same comparison covers EP Cube 1.0 vs 2.0 in detail. Per Alberta CEC Rule 64-918, residential single-unit cap is 20 kWh, so EP Cube 2.0 in Alberta dwellings is the 5/10/15/20 kWh SKU range; 25–40 kWh SKUs are commercial/non-dwelling.
Two ways to back up your home.
Add battery backup to the solar you already have, or get the full solar-plus-battery system in one installation. Both packages are fully engineered, permitted, and installed by our in-house Master Electrician team.
Battery Backup
Add backup power to your existing solar
- EP Cube by Canadian Solar
- 9.9 kWh base capacity, expandable up to 39.6 kWh
- 7.6 kW continuous backup output, <20ms automatic switchover
- LiFePO4 chemistry — safest lithium chemistry, UL 9540A certified
- Whole-home backup during grid outages
- Seamless integration with your existing solar array (AC or DC coupled)
- 10-year battery and inverter manufacturer warranty
- 5- or 10-year workmanship warranty (Standard / Premium tier)
Elite
Full solar + battery backup in one installation
- Everything in our Premium solar package
- 110% of your annual usage offset
- LONGi Hi-MO 7 500W panels (25yr product + 30yr production warranty)
- APsystems DS3 microinverters (25-year warranty)
- SolaTrim premium flush finish — color-matched flashing with built-in critter protection
- ECU-C monitoring — production + consumption
- Lifetime leak-proof roof warranty
- 10-year installation workmanship warranty
- Plus EP Cube battery backup
- 9.9 kWh base capacity, expandable up to 39.6 kWh
- 7.6 kW backup output, <20ms switchover during outages
- Maximize self-consumption of your solar production
- 10-year battery manufacturer warranty
Not sure which package fits? We'll recommend the right one at your free home assessment.
Pair your battery with solar.
Your EP Cube charges from solar during the day and powers your home at night — reducing grid dependence even further. Already have solar? The EP Cube integrates seamlessly through its built-in hybrid inverter with 4 MPPTs. Battery + solar exports are credited at retail rate under the Alberta Micro-Generation Regulation, and CEIP financing in Beaumont, Spruce Grove, St. Albert, and Edmonton can cover battery cost when bundled with solar.
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 FAQ.
Free 15-minute Edmonton battery assessment.
We inspect your panel, verify install location, recommend the right EP Cube size, and confirm exact installed price. No obligation. Phone or in-person.
Refer a neighbour. Get paid. Or pass it forward.
If you refer a homeowner who installs with Stellar, we pay $100 per installed kilowatt on commissioning. On a 19.9 kWh EP Cube, that’s about $1,990 on the inverter side; on a 9 kW solar + battery bundle, $900 on the panels alone.
Take it as cash, apply it as credit on your own next upgrade, or pass it forward — gift the referral fee directly to the new customer to lower their installed cost. Your call.
The next outage isn't a question of if.
It's when.
Free assessment. We inspect your panel, verify your location, and confirm the exact price. No obligation.
Free assessment includes on-site evaluation of your electrical panel and electrical systems, roof condition and orientation analysis, and custom system design with no obligation.