In short: A grid-tied system is connected to the grid with no battery and is the cheapest and most common choice. A hybrid system is also grid-connected but adds a battery for evening use and backup power. An off-grid system has no grid connection at all and relies on solar, batteries and often a generator. For most homes, grid-tied or hybrid is the right answer; off-grid makes sense mainly for remote properties.
Choosing the type of system shapes your cost, your protection during blackouts, and how much of your solar energy you actually use. This guide compares the three options side by side, explains how each one behaves at night and during outages, and helps you decide.
Quick comparison
| Grid-tied | Hybrid (grid + battery) | Off-grid | |
|---|---|---|---|
| Grid connection | Yes | Yes | No |
| Battery | No | Yes | Yes (large) |
| Upfront cost | Lowest | Medium to high | Highest |
| Power during a blackout | No (shuts down for safety) | Yes, if set up for backup | Yes, it’s your only supply |
| Electricity at night | From the grid | From battery, then grid | From battery or generator |
| Earns export payments | Yes, if available locally | Yes, if available locally | No |
| Complexity | Low | Medium | High |
| Best for | Most homes | Blackout protection, time-of-use rates, low export rates | Remote sites without grid access |
What is a grid-tied solar system?
A grid-tied (or «on-grid») system connects your solar panels to your home’s electrical system and to the utility grid, without a battery. Your home uses solar power when the sun is shining, draws from the grid when it isn’t, and exports any surplus. If you’re new to how the parts work together, read How Does a Home Solar System Work?
Pros
- Lowest cost: no battery means a lower upfront price and simpler equipment.
- Simple and proven: the most common residential setup, with many installers and long track records.
- Export payments: where net metering or an export tariff exists, you’re credited or paid for surplus power. See Net Metering vs Export Tariffs.
- Reliable supply: the grid covers nights and cloudy periods automatically.
Cons
- No power in a blackout. Grid-tied inverters shut down when the grid goes down, as a safety measure to protect utility workers. This surprises many owners.
- Exposed to export rules: if export payments are low, you may lose value on surplus energy.
- Dependent on grid prices: you still buy electricity at night.
What is a hybrid solar system?
A hybrid system is grid-connected and includes a battery, usually managed by a hybrid inverter (or a battery inverter paired with your solar inverter). Surplus solar first charges the battery, and you use that stored energy in the evening or during an outage. The grid remains as a backup and as a place to export extra power.
Pros
- Backup power: with the right setup, essential circuits (or the whole house) keep working during a blackout. See Solar Batteries and Blackouts: How They Really Work.
- Higher self-consumption: you use more of your own solar power instead of exporting it cheaply.
- Works well with time-of-use rates: store cheap or solar energy and use it when grid prices peak.
- Future flexibility: some installers offer «battery-ready» systems so you can add storage later.
Cons
- Higher upfront cost: batteries are a major expense, and they may need replacing before your panels do. See Solar Battery Lifespan and Replacement Cost.
- More complexity: more equipment, more settings, more to maintain.
- Not always a better return: where exports are paid at full retail rates, the extra cost of a battery may not pay back on savings alone.
Not sure whether you need one? Read Do You Need a Solar Battery? How to Decide.
Backup capability isn’t automatic
Having a battery does not guarantee power during outages. The system must include a backup gateway or a backup-capable inverter and be wired so that chosen circuits stay live. Always confirm what your quote includes: whole-home or partial backup, how long it will last, and whether solar can recharge the battery while the grid is down. See Whole-Home vs Partial Backup.
What is an off-grid solar system?
An off-grid system has no connection to the utility grid. It must generate, store and manage all the electricity the home uses. That usually means solar panels, a large battery bank, an off-grid inverter or charge controller, and often a backup generator for long spells of poor weather.
Pros
- Independence: no electricity bills and no dependence on utility outages.
- The only option for some locations: where grid connection is unavailable or extremely expensive, off-grid can be more practical.
Cons
- Highest cost: you need a much larger battery and enough solar capacity to get through the darkest weeks of the year.
- Winter and bad-weather risk: most off-grid homes need a generator or careful energy management in low-sun periods.
- Loads must be managed: you can’t casually run every large appliance at once.
- No export income and no grid to fall back on if something fails.
- Maintenance and lifespan: batteries carry heavy cycling duty and typically become the main long-term cost.
- Rules and permits: some jurisdictions have requirements for off-grid dwellings, so check local regulations.
For homes that already have grid access, off-grid is rarely cost-effective. A grid-tied or hybrid system usually delivers most of the benefit at a fraction of the cost.
Which solar system is right for you?
Choose grid-tied if…
- You have reliable grid power and want the lowest upfront cost.
- Your utility pays a good rate for exports (for example, full net metering).
- Blackouts are rare, or you don’t need backup power.
Choose hybrid if…
- Blackouts are frequent or the consequences are serious (medical equipment, home office, well pump).
- Export rates are low and evening electricity is expensive.
- You’re on a time-of-use tariff with a big gap between peak and off-peak prices.
- You want to add an EV or heat pump and manage consumption smartly.
Choose off-grid if…
- Your property has no practical grid access.
- You’re prepared to invest in large storage, a generator, and careful load management.
- Independence matters more to you than cost.
Common mistakes to avoid
- Assuming a grid-tied system will power your home in an outage. It won’t, unless it includes backup capability.
- Buying a battery just because it’s fashionable. Calculate whether it saves you money or provides value you need (backup, resilience). See how to calculate your solar payback period.
- Going off-grid to save money. Off-grid is usually more expensive than staying connected.
- Undersizing the battery or the panels for off-grid use. Winter production is the limiting factor.
- Not checking local rules. Grid connection approvals, export limits, and backup requirements vary by region.
Next steps
- Decide whether backup power matters to you and how much it’s worth.
- Check your local export rules: Net Metering vs Export Tariffs.
- Work out your system size: How Many Solar Panels Do I Need?
- Get several proposals and compare them for red flags.
Where to next:
Frequently asked questions
What is the difference between grid-tied and off-grid solar?
A grid-tied system stays connected to the utility grid and usually has no battery, so it depends on the grid at night and shuts down in a blackout. An off-grid system has no grid connection and relies on solar, batteries, and often a generator.
What is a hybrid solar system?
A hybrid system is connected to the grid and also has a battery. It can store solar energy for evening use and, if configured for it, provide backup power during outages.
Will my grid-tied solar panels work during a power outage?
Not in a standard grid-tied setup. The inverter shuts down when the grid fails, for safety reasons. To keep power during an outage, you need a battery and a backup-capable system.
Is off-grid solar cheaper than being connected to the grid?
Usually not. Off-grid requires much more battery storage and often a generator, so upfront costs are typically higher than for a grid-tied or hybrid system.
Can I add a battery to a grid-tied system later?
Often yes, but it depends on your inverter and equipment. Some systems are «battery-ready» or use compatible inverters; others require adding a separate battery inverter. Ask your installer before buying.
Is a hybrid system worth it?
It can be, if you value backup power or your export rates are low and evening electricity is expensive. Where exports are credited at full retail value, a battery may not pay for itself through bill savings alone.