Hybrid Solar System Diagram: How Panels, Battery and Grid Connect

Last checked 20 October 2026 · JH Solar guide

Reading the hybrid solar system diagram

Start at the top left of the hybrid solar system diagram and follow the power. Sunlight hits the panels, DC power flows through a safety box, and the hybrid inverter turns it into AC for your home. The battery hangs below the inverter, and the grid connects on the right through your main breaker.

Solar panels connect through a DC isolator and surge protector to a hybrid inverter. The inverter charges and draws from a battery through a DC breaker. Utility power enters through the main breaker to the inverter grid input, and can flow back out when exporting is allowed; the inverter backup output feeds a backup sub-panel for essential loads, while other loads stay on the main panel. The panel frames, isolator and inverter bond to a grounding rod.

Each box is a real piece of equipment, listed below in the order power travels. If your installer’s plan is missing one, ask why. New to these drawings? Our guide to reading any solar setup diagram covers the symbols first.

What each line and color means

Orange lines carry DC: panels to inverter, and inverter to battery. Navy lines carry AC: grid through the main breaker into the inverter’s grid input, and the backup output to the backup panel. Green dashed lines are grounding.

The battery line works both ways, and with utility approval the grid line can too, as the two-way arrows in our hybrid solar system diagram show. Our inverter types guide compares hybrid inverters with grid-tie and off-grid models. For a plain-language primer, see the US Department of Energy’s inverter basics.

Operating modes: solar first, battery priority, grid charging

The same hybrid solar system diagram behaves differently depending on the inverter mode. Brands name modes differently, so match the idea, not the label, and write down what your installer sets.

Solar first (self-use)

Solar feeds your loads first. Extra solar charges the battery. When the sun drops, the battery takes over until it reaches the reserve level you set, then the grid fills the gap. It suits homes that want to use as much of their own solar as they can.

Battery priority (backup reserve)

The inverter keeps the battery full for brownouts while solar and grid run the house. It suits areas with frequent long outages.

Grid charging

The battery charges from the grid, for example before a typhoon. It uses grid kWh, so turn it off afterward.

Backup when the grid fails

When the grid drops, the inverter opens its grid connection (anti-islanding) and keeps the backup output alive from the battery and panels. Main-panel loads go dark; backup-panel loads keep running. When the grid returns and stays stable, the inverter reconnects on its own.

The essential-loads backup panel

Most hybrid setups do not back up the whole house. The electrician moves a few chosen circuits from the main panel to a small backup panel fed by the inverter, the box labeled “Backup panel” in the hybrid solar system diagram.

How to choose backup loads

• Start with what you truly need: lights, fans, the refrigerator, Wi-Fi, phone charging and any medical devices.
• Leave out big heat loads such as water heaters, electric ovens and clothes dryers.
• Think hard before adding an aircon. It can run on backup, but it needs a bigger inverter and battery.
• Keep the total running watts under the inverter’s backup output rating, and allow for motor start-up surge.

Write your list per circuit, not per appliance: if the refrigerator shares a circuit with the kitchen outlets, everything on that circuit moves together.

Battery sizing for brownouts

The battery in a hybrid solar system diagram only needs to cover your backup loads through the longest brownout you plan for. Our solar computation page uses the same method: watts × hours, then adjust for usable capacity and losses.

Example: 2.10 kWh ÷ (0.80 usable × 0.90 efficiency) = 2.10 ÷ 0.72 ≈ 2.92 kWh nominal battery. The 0.80 and 0.90 are example assumptions; your battery’s datasheet gives the real usable depth and efficiency.

Example with a larger battery: the JH Solar Version 2 battery is rated at 15.36 kWh nominal. 15.36 × 0.80 × 0.90 ≈ 11.06 kWh reaches AC loads, which is about 11 hours at a constant 1 kW under those example assumptions; real backup time depends on your loads, the charge level when the brownout starts, and the weather. For battery chemistry, lifespan and placement, read our solar battery sizing guide.

MPPT string check: cold Voc, hot Vmp and Isc

The panels in a hybrid solar system diagram are drawn as one box, but they are really strings wired to the inverter’s MPPT inputs. Each input has power, voltage and current limits, and a string that passes on power can still fail on voltage. The maximum power point tracking article explains what the tracker does inside the inverter.

Example with the JH Solar Version 2: it is rated for 2 MPPT inputs at 5,500 W PV input each. The package uses 14 × 720 W = 10.08 kWp. Split evenly, that is 7 panels per tracker, or 5,040 W (5.04 kWp), which fits the 5,500 W input by power only. How those panels are arranged in series and parallel must still pass the cold Voc, hot Vmp and Isc checks against the panel and inverter datasheets.

The all-in-one unit: a hybrid in one cabinet

An all-in-one unit is still a hybrid solar system diagram, with the inverter and battery sharing one cabinet inside a dashed box. Everything outside the box stays the same.

Solar panels connect through a DC isolator and surge protector to an all-in-one unit that holds the hybrid inverter and the battery in one cabinet. Utility power feeds its grid input through a breaker, and its backup output feeds the essential-loads panel.

Both systems from JH Solar are built this way. The JH Solar Version 1 package pairs its all-in-one unit, rated at 7 kW and 16 kWh, with 6 × 620 W panels (3.72 kWp). The JH Solar Version 2 package uses 14 × 720 W panels (10.08 kWp) with a rated 11 kW inverter and 15.36 kWh battery. You can compare JH Solar Version 1 and Version 2 in detail; the price is confirmed after a site assessment.

The benefit is fewer separate parts. The trade-off is that expansion and service depend on that one unit, so ask about added battery options and support before you buy.

Step-by-step installation process

You will not wire the grid side yourself, but knowing the order helps you check progress. This is how a typical job moves from a plan on paper to a working system.

1. 1

   Step 1: List your loads and backup needs

   You list appliances, hours and the circuits that must stay on in a brownout. Bring a recent bill. This step is yours.

2. 2

   Step 2: Site assessment and design

   The installer checks roof, shading and main panel, then plans strings, battery size and backup circuits.

3. 3

   Step 3: Permits and utility paperwork

   The LGU electrical permit is filed before work starts. If you plan to export, the net-metering application follows your utility’s steps; some papers, such as the CFEI, only come after the finished work is inspected.

4. 4

   Step 4: Mount the panels

   Rails are fixed to the roof structure with sealed penetrations, suited to typhoon wind loads.

5. 5

   Step 5: Run the DC side

   PV cables run in conduit to the DC isolator; polarity and string voltage are checked before connection.

6. 6

   Step 6: Set the inverter and battery

   The inverter and battery go in a shaded, ventilated spot above flood level. The battery connects to the inverter through its DC breaker, which stays open until commissioning.

7. 7

   Step 7: Wire the AC side (licensed electrician)

   The RME or PEE connects the grid input, builds the backup panel and moves the chosen circuits. You watch, ask, and photograph the labels.

8. 8

   Step 8: Ground and bond everything

   Frames and rails are bonded as they go up; the inverter, enclosures and ground rod connection are completed and checked before anything is switched on.

9. 9

   Step 9: Commission and hand over

   Settings are entered, a brownout is simulated, and you get the app, manuals and warranty papers.

Commissioning checklist

Use this checklist on handover day to confirm that what was built matches the hybrid solar system diagram. You do not touch the wiring; you ask to see each result and note it down.

Hybrid vs off-grid vs grid-tied

A hybrid keeps the grid like a grid-tied system and adds a battery like an off-grid one. Our on-grid system diagram and net metering guide covers the no-battery option in depth.

On your phone: monitoring tips

Most hybrid inverters send readings over Wi-Fi or a data dongle to a phone app from the inverter maker. The app shows the same flows as your hybrid solar system diagram.

• Check the battery percentage each evening, and again before a typhoon or a scheduled brownout.
• Turn on alerts for faults, grid loss and low battery so you hear about problems early.
• Screenshot your settings after commissioning so you can spot changes later.
• Do not change grid or export settings yourself. Ask the installer.

Hybrid solar in the Philippines

Brownouts are the main reason Filipino homes choose a hybrid. Maintenance, storm damage and supply issues can all cut power, and a battery-backed panel keeps fans and the fridge running. Peak sun hours are typically about 3.5 to 5 a day depending on place and season; look up your city on the Global Solar Atlas before you size anything.

The rainy season brings weeks of low solar output; a hybrid leans on the grid then, and can charge the battery from it before a storm. Heat matters too: keep the inverter and battery in shade with good airflow, not on a west wall in full afternoon sun.

Net metering with a hybrid solar system

A hybrid can join net metering. The DOE counts renewable systems with or without battery storage, so Meralco customers and cooperative members can apply through their utility once the setup is approved. In a hybrid solar system diagram, export follows a fixed order: solar feeds your loads, then charges the battery, and only the surplus flows out through the bidirectional meter.

That order means a hybrid usually exports less than a grid-tied system of the same size, so backup matters more than credits. Exports earn credit at the utility’s blended generation cost, lower than the rate you pay, and since the 2025 rule changes unused credits roll over to later bills. Until approval, your installer sets the inverter to zero or limited export. The Meralco net metering FAQ lists the documents, and our net metering guide for the Philippines covers every step, fee and timeline.

Conclusion

A hybrid solar system diagram is easier to read once you know the pattern: panels and DC safety on the left, the hybrid inverter in the middle, the battery below, the grid on the right, and a backup panel for the loads that matter in a brownout. Choose your backup loads first, size the battery from them, and let your installer check every string against the inverter limits.

Your part is simple but useful: write the load list, follow the steps as the job moves along, and use the commissioning checklist on handover day. The AC and grid wiring stays with a licensed electrician.