Clean Power, Every Hour: India’s Next Energy Shift

As climate commitments become more serious and more closely scrutinised, the way we define “clean electricity” is evolving. For years, companies could claim they were running on 100% renewable energy simply by procuring enough green power on an annual basis. While this approach played an important role in scaling renewable energy globally, it is now being re-examined.

In India, this question is becoming even more relevant as the power system grows more complex, with increasing renewable penetration, new procurement models like RTC and hybrid power, and expanding data infrastructure.

A more grounded question is now emerging:

Are we using clean electricity at the time we consume it?

This is where hourly matching comes in, and why it is becoming central to 24/7 Carbon-Free Electricity (CFE), especially in the context of India’s evolving power market.

What is Hourly Matching- In Simple Terms?

Hourly matching means aligning electricity consumption with carbon-free electricity hour by hour, ideally within the same grid.

Think of it this way:

If your factory or data centre is running at 9 PM, the electricity you claim as “clean” should also be generated at 9 PM, not earlier in the day when solar power was available.

This shifts the focus from “how much clean energy you buy” to “when and where that energy actually comes from.”

It sounds like a small change, but it completely changes how we think about energy procurement.

Why the Old Model is No Longer Enough

Annual matching did its job; it helped create demand for renewable energy and supported project development. But as systems evolve, their limitations are becoming clearer.

First, timing matters

Solar energy peaks during the day, but demand often increases in the evening. Annual accounting smooths over this mismatch, hiding the fact that fossil fuels still fill the gaps.

Second, it can overstate progress

A company may report “100% renewable electricity,” even if a significant portion of its actual consumption happens when the grid is still carbon-intensive.

Third, it doesn’t push the system forward

There is little incentive to invest in storage, flexible demand, or firm clean power if annual totals are all that matter.

As a result, the conversation is shifting from renewable energy volumes to real-time decarbonization.

Why Hourly Matching Changes the Game

Hourly matching is not just a better accounting method; it changes how electricity systems evolve.

1. It creates demand for clean energy around the clock

Instead of relying heavily on daytime solar, companies start looking for solutions that work at all hours:

• Wind for night-time supply
• Hydropower or geothermal for stability
• Batteries to shift energy across time

This naturally drives investment in round-the-clock clean energy, not just intermittent generation.

2. It focuses attention on the “dirty hours”

Not all hours are equal. Some periods, like evening peaks, are much more carbon-intensive. Hourly matching helps identify and reduce emissions where it matters most.

3. It aligns with how grids actually operate

Electricity systems already function on hourly or sub-hourly intervals (for example, 15-minute blocks in India). Hourly matching simply brings clean energy accounting in line with physical reality.

The Push from the 24/7 CFE Coalition

This shift is not happening in isolation. The Climate Group has launched the 24/7 Carbon-Free Coalition to accelerate the adoption of hourly matching.

The coalition brings together companies that are willing to go beyond annual targets and commit to time-based clean energy use.

Some of the early members include:

• Google
• Vodafone
• AstraZeneca
• Iron Mountain
• AirTrunk
• Shree Cement

The idea is simple but ambitious: Move from broad commitments to measurable, hour-by-hour progress.

This builds on earlier global efforts like the UN-backed 24/7 CFE Compact, which helped bring this concept into the mainstream.

Real-World Examples: Who is Leading?

A few companies are already showing what this looks like in practice.

Google

Google has set a goal to run entirely on 24/7 carbon-free energy by 2030.

It uses advanced data and forecasting to match electricity demand with local clean energy supply on an hourly basis. Some of its data centres are already getting close to this goal.

Microsoft

Microsoft is also targeting 24/7 CFE by 2030.

Its strategy involves building a diverse portfolio of clean energy sources and investing in storage to ensure reliability across all hours.

Iron Mountain

Iron Mountain is working toward 24/7 CFE globally by 2040, collaborating with utilities and developers to enable hourly matching solutions in different markets.

What’s important here is that these companies are not just buying renewable energy—they are actively shaping how electricity markets evolve.

Carbon Accounting Standards Are Catching Up

As expectations rise, global standards are also evolving.

Organisations like the Greenhouse Gas Protocol and ISO are exploring ways to improve how electricity-related emissions are reported.

There is growing recognition that:

• Annual averages are not enough
• Timing and location matter
• Claims need to reflect actual system impact

Hourly matching fits naturally in this direction. It provides a more accurate, transparent, and defensible way to report emissions, something that companies increasingly need.

Trade and Regulation Are Raising the Bar

This is no longer just about voluntary climate leadership.

Policies like the Carbon Border Adjustment Mechanism (CBAM) are starting to link emissions performance directly to trade.

Exporters may need to show:

• What electricity did they use
• When they used it
• How clean it actually was

In this context, relying on annual renewable certificates may not be enough. Regulators are beginning to look for:

• Time-aligned electricity use
• Physical deliverability
• Verified data

Hourly matching is quickly becoming a practical way to meet these expectations.

Why This Matters for India

India is uniquely positioned in this transition, not because it has already adopted hourly matching, but because many of the building blocks are already in place.

First, India’s power system is inherently granular. Electricity markets operate on 15-minute settlement intervals, meaning generation, consumption, and deviations are already tracked at a sub-hourly level. In other words, the physical system is ready for hourly matching, even if the accounting framework is not yet there.

Second, there is a clear shift in how clean power is being procured. Over the past few years, we’ve seen increasing interest in:

• Round-the-Clock (RTC) renewable energy tenders, designed to mimic thermal power supply profiles
• Firm and Dispatchable Renewable Energy (FDRE) projects, which combine renewables with storage and stricter supply obligations
• Hybrid PPAs (wind-solar combinations, often with storage), aimed at smoothing variability

These models are important because they move beyond simple renewable procurement and start addressing time-of-use and deliverability, which are at the heart of hourly matching.

Third, India is rapidly expanding its smart metering infrastructure under national programs like the Revamped Distribution Sector Scheme (RDSS). As millions of smart meters are deployed:

• Access to granular consumption data will improve significantly
• Consumers and utilities will gain better visibility into hourly demand patterns
• The foundation for time-based energy tracking and verification will strengthen

This is a critical enabler for any future move toward hourly or sub-hourly clean energy accounting.

At the same time, there are areas where India will need to evolve.

Today, most renewable energy claims are still based on annual or monthly accounting mechanisms, such as Renewable Energy Certificates (RECs) or contracted volumes under PPAs.

This creates a disconnect – The system operates in 15-minute intervals, but clean energy claims are still averaged over months or years.

Bridging this gap is where hourly matching becomes relevant.

Looking ahead, India also has an opportunity to align this transition with emerging demand drivers:

• Green hydrogen production, where international standards increasingly require time-based matching
• Export-oriented industries, which may need to demonstrate credible electricity use under mechanisms like the EU’s CBAM
• Corporate renewable procurement, especially among global companies with 24/7 CFE commitments

In many ways, India does not need to reinvent its power system, it needs to build on what already exists.

By connecting granular system operations (15-minute markets), evolving procurement models (RTC, FDRE, hybrid), and improving data infrastructure (smart meters), India can move toward credible, time-based clean energy accounting.

And when that happens, hourly matching will not feel like a disruption; it will feel like the next logical step.