Learn About Solar · Part 1

Solar + Storage vs. Just Solar: What's the Difference?

Both are bidirectional on the meter — but one gives you control.

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How It Works Today

During the day, your panels
generate more than you use.

A grid-tied solar system converts sunlight into electricity and powers your home in real time. When production exceeds demand, the excess has to go somewhere.

SUNPANELSGeneratingINVERTERDC → ACYOUR HOMEUsing powerTHE GRIDTakes excess

Your excess energy flows to the utility grid. You get credits on your bill — this is called net metering.

After Dark

At night, you pull power
back from the grid.

When the sun goes down, your panels stop producing. Your home switches to grid power and you use those credits you banked during the day.

NIGHTPANELSDormantYOUR HOMEUsing powerTHE GRIDSupplying you

You're using power from the grid — at whatever rate the utility charges. Your credits offset some of the cost, but you're still dependent on the grid.

The Catch

When the grid goes down,
your solar shuts off too.

This surprises most people. Grid-tied solar systems are required by law to disconnect during an outage — it's called anti-islanding protection. Without a battery, your panels can't power your home during a blackout.

PANELSProducingYOUR HOMEConnectedGRIDDown
🌙

No power at night without the grid

⛈️

No power during outages — even with solar

📈

Subject to utility rate increases forever

The Economics

Utilities charge the most
when your panels aren't producing.

Peak electricity rates hit in the evening — exactly when your solar stops generating. Without storage, you're buying the most expensive power at the worst time.

6am
8am
10am
12pm
2pm
4pm
6pm
8pm
10pm
Solar producing — low rates No solar — peak rates
💡

This gap is getting worse. As electricity demand rises from EVs, AI, and electrification, peak rates will only increase.

The Upgrade

Now add a battery.
Everything changes.

With battery storage, your excess energy doesn't leave your property. It stays in a battery on your wall — ready for you whenever you need it.

SUNPANELSGeneratingINVERTERYOUR HOMEPoweredBATTERYStoring excess
🔋

Instead of giving your excess to the utility, you keep it. Your battery fills during the day so you have power on your own terms.

After Dark — With Storage

Night falls.
But you're ready.

Your battery takes over seamlessly. Your home runs on energy you generated from your own roof — not power you're buying from the grid at peak rates.

NIGHTBATTERYCharged & readyYOUR HOMEPowered by batteryGRIDStanding by
$0
Grid power purchased
100%
Self-powered
Zero
Peak rate exposure
Resilience

Grid goes down?
You stay on.

When the grid fails, your battery automatically disconnects from the utility and powers your home independently. No generator. No fuel. No noise. No delay.

BATTERYPowering homeYOUR HOMELights onGRIDDown

Without Battery

  • Solar shuts off
  • Home goes dark
  • Wait for utility repair

With Battery

  • Automatic switchover
  • Essential loads stay on
  • Recharges from solar next day
The Comparison

Grid-tied solar is good.
Solar + storage is the full picture.

Grid-Tied Solar

Daytime power
Night powerGrid only
Outage protection
Peak rate avoidance
Energy independencePartial
Future-proofedLimited

Solar + Storage

Daytime power
Night powerBattery
Outage protection
Peak rate avoidance
Energy independenceFull
Future-proofed
This is the system Sentinel recommends.

Ready to take control of
your energy?

Every home is different. Let's talk about what solar + storage looks like for yours — no pressure, no gimmicks.

Or call us: (859) 888-4893