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A SolarTech advisor reviewing a rooftop solar installation with local customers

Solar solutions

Engineering the
complete system.

From electricity-bill review and roof assessment to commissioning and long-term care, one accountable team coordinates every solar stage across Kolhapur and Maharashtra.

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Built around the requirement

Different properties need
different answers.

A home, hospital, school, office and factory use electricity differently. We begin with that difference—then connect system size, roof conditions and project delivery to the requirement.

On-grid, off-grid or hybrid?

Three systems.
Three different jobs.

Choose based on grid reliability, backup needs, electricity use and budget. A site and load review is still needed before final design.

01

On-Grid

Best for stable grid supply

Uses solar during the day and the grid when generation is lower. It is usually the simplest route to reducing electricity costs.

02

Off-Grid

Best where grid access is unavailable

Uses battery storage to supply power without relying on a grid connection. Loads and backup duration must be designed carefully.

03

Hybrid

Best for savings plus backup

Combines solar, the grid and battery storage for properties that need bill savings and selected backup during outages.

Comparison of on-grid, off-grid and hybrid solar systems
FeatureOn-GridOff-GridHybrid
Grid connectionRequiredNot requiredRequired
Battery includedNoYesYes
Power during an outageNoYesYes, through battery
Net-metering suitabilityCommonly suitableNot applicableDepends on system design
Relative upfront costLowestHigherHighest
Battery maintenanceNot requiredRequiredRequired
Residential subsidyApplicable to eligible homesNot generally applicableOnly eligible grid-tied portion, if approved
Typical return profileUsually fastestSlower due to storage costBetween savings and backup priorities
Best useReduce bills with a reliable gridSites without grid accessSavings plus selected outage backup

Backup capability, net-metering treatment and battery sizing depend on the final system configuration and applicable electricity-distribution rules. This table is a planning guide, not a technical proposal.

A closer look

Understand the trade-offs
before choosing equipment.

The right system is defined by the job it needs to do. Backup, storage and independence add capability—but also cost, maintenance and sizing decisions.

01

On-Grid

Best for stable grid supply

How it works

  1. 1.Panels generate DC power
  2. 2.The inverter supplies usable AC power
  3. 3.Loads use solar first; the grid covers a shortfall
  4. 4.Eligible surplus is handled through the approved metering arrangement

Key benefits

  • ✓Lowest relative upfront cost
  • ✓No battery servicing
  • ✓Usually the fastest savings-led return

Limitations

  • —Standard systems shut down during grid outages for safety
  • —No stored energy for night-time use
  • —Requires an active grid connection
02

Off-Grid

Best where grid access is unavailable

How it works

  1. 1.Panels serve daytime loads
  2. 2.Surplus charges the battery
  3. 3.Stored energy supplies loads when solar is unavailable
  4. 4.A controller protects battery charging and discharge

Key benefits

  • ✓Works where grid access is unavailable
  • ✓Energy storage for later use
  • ✓Independent system design

Limitations

  • —Higher upfront cost
  • —Battery replacement and maintenance
  • —Backup duration is limited by capacity and load
03

Hybrid

Best for savings plus backup

How it works

  1. 1.Solar serves current loads first
  2. 2.Surplus can charge the battery
  3. 3.The grid supports demand when needed
  4. 4.Battery supplies selected backup loads during outages

Key benefits

  • ✓Savings plus outage backup
  • ✓Automatic source management
  • ✓Flexible around critical-load priorities

Limitations

  • —Highest relative upfront cost
  • —Battery life and replacement planning
  • —Whole-property backup may require substantial storage
01

Rooftop Solar

A system size connected to how your property uses power.

We review electricity consumption, daytime demand, sanctioned load, roof geometry, shade and access before recommending capacity. The result is grounded in both energy use and buildable roof space.

  • Site and energy assessment
  • Electrical and structural design
  • Component selection and installation
  • Testing, commissioning and handover
  • Net-metering process support
02

EPC Solutions

One team accountable for design, procurement and delivery.

Engineering decisions continue into procurement, construction and commissioning instead of being handed between disconnected teams. That keeps responsibilities clear throughout the project.

  • System engineering and yield planning
  • Equipment and structure procurement
  • Project execution and safety coordination
  • Monitoring and control integration
  • Commissioning documentation
03

Operations & Maintenance

Protect performance after commissioning.

Monitoring and preventive maintenance help identify faults, soiling and equipment concerns before they become longer periods of lost generation.

  • Performance monitoring
  • Scheduled inspections
  • Preventive maintenance
  • Module cleaning coordination
  • Fault diagnosis and response

Not sure which
solution fits?

Start with a free review of your electricity bill and property requirement.

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Tata Power Solaroof

Official partner recognition

Authorised Tata Power Solaroof Channel Partner for Kolhapur District

National brand standards. Local project accountability since 2017.

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