Article/Blog

From OPEX to RTC: Shaping the Future of Commercial Solar 

Published 8 October 2025

In today's fast-changing world, the energy choices of commercial and industrial (C&I) customers are no longer driven by cost alone. Under mounting pressure to decarbonise their supply chains, meet ESG targets, and prepare for global compliance requirements such as the CBAM (Carbon Border Adjustment Mechanism), businesses are seeking energy solutions that are reliable and resilient. 

For India's clean energy developers, this presents an opportunity to address customer demand through innovation and to propel an industry that can give India a competitive edge in the global clean energy transition.   

   

OPEX: Making Solar Adoption Accessible 

When Gentari entered the C&I solar market through its clean energy arm (formerly Amplus), adoption was often constrained by the burden of high upfront costs. Through its pioneering OPEX model, Gentari removed this barrier.   

By offering zero upfront investment and a pay-as-you-use structure, businesses could adopt solar energy without heavy capex, while benefiting from a predictable energy supply.   

With this approach, more than 300 customers across diverse sectors placed their trust in Gentari. Gentari today continues to be recognised as the market leader in the OPEX rooftop category, a position it has maintained for three consecutive years.   
 

Demand Evolution: From Cost to Certainty

Over the years, with rising production and economic growth, automation and stricter decarbonisation mandates, industrial energy demand has evolved. Priorities are now clear: predictable costs, cleaner supply chains and round-the-clock access to green power. This demand is reshaping the C&I solar sector — and Gentari continues to be at the forefront of this evolution.   

With customer centricity always at its core, Gentari has consistently innovated solutions that help address customer needs- from vanilla rooftop solar plants to floating solar, ground-mounted projects and solar carports, Gentari has always transformed the way businesses viewed clean energy, moving from cautious acceptance to strategic integration across operations.   

The impact has been industry-wide and transformative: The C&I clean energy market has grown rapidly year-on-year, driven by the scalability of models such as OPEX. 
This momentum has laid the foundation for the next phase of India's clean energy journey: hybrid and round-the-clock (RTC) solutions. 


From Solar-Only to RTC and Hybrid Solutions

Round-the-clock (RTC) and hybrid solutions represent the next step in India's clean energy transition. These systems integrate solar, wind and storage into flexible, customer-centric solutions.  

RTC solutions go beyond daytime solar by combining multiple generation sources with behind-the-meter storage, ensuring energy availability when businesses need it most. This reduces dependence on the grid, mitigates variability and provides predictable long-term energy costs.   

Gentari is already making a mark in this segment.  

  • Hybrid- Project Shiva – a solar–wind hybrid that enhances stability and reduces variability in energy production.   

  • RTC-Sewagram – India's first on-site behind-the-meter RTC (wind–solar–storage) project, designed to deliver continuity of supply and resilience for customers.   

These milestones are more than engineering achievements; they directly address client challenges around reliability and cost visibility.   

Partnerships, such as those with UltraTech Cement at Sewagram, demonstrate how integrated clean energy solutions can support ambitious sustainability goals without compromising operational performance.   

By advancing RTC and hybrid projects, Gentari is responding to client demand, helping shape India's renewable energy landscape for the long term.   

The Bigger Picture: India's Commercial Solar Momentum

The market itself is accelerating:   

  • India's cumulative solar capacity reached 119.02 GW as of July 2025 (As per MNRE).   

  • The open-access market for C&I buyers surged to ~30 GW in FY2025, up from ~9.5 GW in FY2020 (As per Bridge to India).   

  • Rooftop PV capacity is projected to grow from 17 GW in FY2025 to 25–30 GW by FY2027 (As per PV Magazine International).   

This momentum demonstrates that Indian businesses are not merely purchasing green power for compliance — they are actively enhancing their competitiveness through energy choices. 


Why Businesses Choose Gentari

Gentari's edge lies in combining customer-centric financing models with cutting-edge engineering and scalable clean energy ecosystems.   

Clients benefit from:   

  • Cost savings through predictable, long-term energy pricing.   

  • Risk-free adoption with zero upfront investment.   

  • Tailored solutions — from rooftop systems to RTC hybrids.   

  • Sustainability leadership that enhances brand value and stakeholder trust.   

   

The Road Ahead: Reliable, Round-the-Clock Clean Energy

As India targets 500 GW of renewable capacity by 2030, Gentari's role is clear: to deliver energy solutions that are not only clean but also customer-ready, reliable, and available round-the-clock.   

From pioneering OPEX solar to advancing hybrid and RTC projects, Gentari is shaping the next era of commercial solar in India.  

The future of business power is predictable, scalable, and green. And Gentari is here to deliver it.