Parallel operation
The grid-tied inverter matches grid voltage and frequency and injects power into your distribution board.
On-Grid Solar
On-Grid Solar Systems
An on-grid solar system works in parallel with the utility grid and has no batteries. It is the lowest-cost configuration per kW and is suited to sites with reasonably reliable grid supply that want to reduce their electricity bill.
An on-grid solar system works in parallel with the utility grid and has no batteries. It is the lowest-cost configuration per kW and is suited to sites with reasonably reliable grid supply that want to reduce their electricity bill.
Overview
In an on-grid system, the inverter synchronises with the grid and feeds your internal loads. When generation exceeds consumption, the surplus is exported; when generation falls short, the grid makes up the difference. Billing treatment of export follows the utility's prevailing net-metering rules.
Because there is no battery, the system has fewer components to maintain and a lower capital cost. The trade-off is that it does not supply power during a grid outage.
Who it is for
- Homes and buildings with stable grid supply
- Commercial consumers focused on bill reduction
- Sites where day-time consumption matches generation hours
- Owners who do not need outage backup from solar
How it works
Self-consumption first
Generated units serve on-site loads before anything is exported.
Export and import
Net metering records both directions where the utility permits it, under its current regulations.
Anti-islanding
On a grid outage, the inverter disconnects automatically so no power is fed into a dead line.
Key benefits
- Lowest cost per kW among system types
- Fewer components, simpler maintenance
- Long inverter and module service life with no battery replacement
- Eligible for net metering where the utility allows it
Technical considerations
- Inverter selection
- String or multi-MPPT inverters are chosen for roof orientation and shading, and for single- or three-phase supply.
- Protection
- AC and DC protection, surge protection and earthing are designed to applicable standards and utility requirements.
- Approvals
- Net metering application, feasibility and meter replacement follow the utility process; GLS supports documentation and coordination.
Process
01 — Consultation
We understand your load profile, electricity bill, tariff category and objective.
02 — Site Assessment
Roof or land survey covering area, orientation, shadow, structure and electrical infrastructure.
03 — System Design
Capacity sizing, layout, module and inverter selection, cable and protection design.
04 — Proposal & Planning
Detailed scope, bill of materials, indicative generation and commercial proposal.
05 — Engineering & Installation
Structure fabrication and erection, module mounting, DC and AC works, earthing and protection.
06 — Testing & Commissioning
Insulation, polarity, string current, earthing and inverter commissioning checks.
07 — Grid Integration / Handover
Coordination for net-metering or grid approval where applicable, then documented handover.
08 — Monitoring & O&M
Generation review, scheduled cleaning and inspection, and corrective maintenance.
Components we use
Solar Panels (PV Modules)
Photovoltaic modules that convert sunlight into DC electricity — the generating element of every solar system.
Solar Inverters
The inverter converts DC from the array into usable AC power and controls how the system interacts with the grid and batteries.
Solar Cables, Connectors & BOS
Balance of system covers everything between the modules and the supply point — where quality quietly decides long-term safety and losses.
Project examples
GLS has completed 300+ projects across Tamil Nadu. Case studies in this category are being documented with client approval, and we publish only what owners have confirmed may be shared. Ask us for references relevant to your category and we will send what has been approved for disclosure.
Projects & Case StudiesFrequently asked questions
What is the difference between on-grid and off-grid solar?
On-grid systems work with the utility grid and have no batteries, so they stop during an outage. Off-grid systems use batteries and can run loads independently of the grid, at higher cost and with battery replacement over time.
Do I still get an electricity bill with on-grid solar?
Yes. You remain a utility consumer and continue to receive a bill, but the imported units — and therefore the amount — are typically lower. Fixed charges normally continue to apply.
Get an On-Grid Solar Proposal
A short conversation about your consumption and site is usually enough for us to tell you what is worth doing.