Residential Solar Projects With or Without Battery Storage: Which Is Better?
Solar without a battery costs less and is the simpler setup. Solar with battery storage keeps essential circuits running during outages and lets you use more of the energy you make. On Vancouver Island, a battery makes the most sense if outages hit you often, or if you'd rather use your solar at home than sell the extra to BC Hydro at 10 cents per kWh.
Neither option is "better" across the board. The right answer depends on where you live, how often the power goes out on your road, and what you want your system to do. And thanks to some big changes from BC Hydro in 2026, the math looks different than it did even a year ago.
What Changed in 2026, and Why It Matters for Batteries
Two things shifted this year. First, BC Hydro closed its net metering rate to new customers on July 1, 2026. Under the old setup, exported solar energy you sent to the grid was banked as credits against future bills. Under the new self-generation rate, BC Hydro buys your excess power at a flat 10 cents per kWh and pays you each billing cycle.
Second, the rebates were restructured. Solar and battery rebates now work differently, battery-only rebates have tighter rules, and installs must be done by a contractor in BC Hydro's Home Performance Contractor Network (HPCN) to qualify. More on that below.
What this means in plain terms: every kWh you store and use yourself is a kWh you don't buy from the grid. Whether that's worth more than the 10 cents you'd get for exporting it depends on your rate plan and when you use energy, which is exactly the conversation to have with your installer.
Solar Without a Battery: The Pros and Cons
A grid-tied system without storage is the most common setup in BC. Your panels power your home during the day, extra power goes to the grid, and you draw from BC Hydro at night and on cloudy days.
Lower upfront cost and a simpler installation.
Strong rebate support. BC Hydro offers rebates on eligible grid-connected solar that can take a meaningful bite out of the upfront cost. Our BC solar rebates page has the current amounts.
Less equipment to maintain with normal warranties of 25-year or more.
The catch: standard grid-tied solar shuts off during a power outage, even on a sunny day. That's a safety requirement that protects line crews, so solar alone won't keep your lights on when the grid goes down.
Solar With Battery Storage: The Pros and Cons
Adding a battery lets you store daytime solar for evening use and, with the right setup, keep selected circuits powered during an outage.
Backup power for the essentials: fridge, lights, internet, well pump, furnace fan, or whatever you choose to put on the backed-up circuits.
More self-use of the power you generate instead of exporting it at 10 cents per kWh.
Battery rebates are available on top of the solar rebate, with a higher amount available if you enrol the battery in BC Hydro's Peak Saver program.
Higher upfront cost, even after rebates.
Limits in winter. Island Decembers are short and grey. Your panels produce far less, so a battery won't carry you through a multi-day winter outage on solar alone.
Installation requirements. Batteries need a suitable location and must meet specific safety certifications, especially if they're installed inside your home.
Side-by-Side: Solar Only vs. Solar + Battery
Solar only | Solar + battery | |
Upfront cost | Lower | Higher |
BC Hydro rebates | Solar rebate | Solar rebate plus a battery rebate (higher with Peak Saver enrolment) |
Power during an outage | No, system shuts off with the grid | Yes, for backed-up circuits, as long as the battery has charge |
Excess solar | Sold to BC Hydro at 10¢/kWh | Stored first; any extra is exported |
Best fit | Budget-first, in-town homes with rare outages | Rural or outage-prone properties, and homes that want backup without a generator |
Who Should Add a Battery on Vancouver Island?
A battery is usually worth a serious look if you:
Live rurally or at the end of a long line, where outages are frequent and slow to restore.
Rely on a well pump, work from home, or simply can't afford to lose power for hours at a time.
Want quiet, fuel-free backup without adding a generator.
Plan to shift more of your energy use to evenings, when your panels aren't producing.
You can probably skip the battery, at least for now, if you're in town with reliable power, your budget is tight, or you're an existing net metering customer. Current net metering customers stay on that rate until 10 years after their start date, and adding only a battery rebate won't move you to the new rate.
What About a Generator Instead?
Batteries and standby generators solve the outage problem differently. A generator can run your whole home for days as long as it has fuel, which matters in a long winter storm. A battery is silent, automatically switched on in milliseconds, needs no fuel, and recharges from your panels, but it's limited by its storage and by how much sun you get. Plenty of Island homeowners end up with both. If whole-home, multi-day backup is your priority, it can be done with battery systems but the cost might make a generator worth considering; have a look at our residential generators page.
Not Ready for a Battery Yet? Go Battery-Ready
If a battery isn't in the budget today, you don't have to close the door on it. Your system can be designed with a compatible inverter and panel layout so storage is easier to add later. A battery added to an existing solar system can still qualify for a rebate, as long as it meets the program requirements. If you're also planning an EV charger or heat pump, factor those in now too. Our post on whether your electrical panel can handle an EV charger, heat pump or hot tub explains why.
Rebate Rules to Know Before You Buy
The rebate process has a specific order, and getting it wrong can cost you. The key points:
Apply before building. A self-generation application must be submitted and accepted by BC Hydro before project construction starts.
Use an HPCN contractor. Since June 1, 2026, solar and battery systems must be installed by a Home Performance Contractor Network member to qualify. Osprey Electric is an HPCN member.
Check the equipment. Batteries must be on BC Hydro's qualified product list, and Tesla products are currently not eligible for these rebates.
Peak Saver timing. To get the higher battery rebate, the battery has to be enrolled in Peak Saver within a short window after BC Hydro approves your connection.
Funding is limited. Rebates are first come, first served while funding lasts.
Rebate amounts change regularly, so for current figures and eligibility, see our BC solar rebates page. To see the system types we install, visit solar power systems.
Frequently Asked Questions
How big a solar battery do I need?
It depends on what you want to power and for how long. Start by listing your must-have circuits, like the fridge, lights, internet, and well pump, then size storage to cover them through an evening or an outage. Rebate programs set a minimum battery size, and an installer can size the battery to your actual usage.
Can I add a battery to my existing solar system later?
Yes. Batteries can be added to existing solar systems, and that add-on can still qualify for a BC Hydro battery rebate if it meets the program requirements and is installed by an HPCN contractor. A compatible inverter makes the process simpler, which is why going battery-ready during the original install is a smart move.
Can a solar battery power my whole house?
Usually not on a single battery. Most systems back up a selected group of essential circuits. Large loads like heat pumps, EV chargers, ranges, and hot tubs draw a lot of power, so covering them takes multiple batteries and careful design. For whole-home, multi-day backup, a standby generator should also be considered.
Is a battery worth it if I'm already on net metering?
For most existing net metering customers, the main reason to add a battery is backup power, not savings. You keep your net metering rate until 10 years after your start date, and taking only a battery rebate doesn't switch you to the new rate. Once your 10 years are up, storage becomes more valuable.
Weighing up whether storage makes sense for your home? Talk to Osprey Electric's solar team and we'll help you size a system that fits how you actually use energy.