What is REC (Renewable Energy Certificate) in India: Why Do RECs Matter?

Did you know that one Renewable Energy Certificate, or REC, represents the renewable attribute of 1 megawatt-hour (MWh), or 1,000 units, of eligible renewable electricity supplied to the grid? It is a tradable certificate that can be bought, sold, and claimed separately from the physical electricity.

This separation is necessary because electricity from solar, wind, hydro, and fossil-fuel plants enters the same power grid. Once mixed, a business using grid electricity cannot directly prove how much of its consumption came from renewable sources. RECs solve this problem by providing traceable proof that an equivalent quantity of renewable electricity was generated.

In this guide, we explain the REC meaning in its true sense, how the REC mechanism works in India, who issues and trades these clean energy certificates, who needs to buy them, their benefits and limitations, and why RECs matter for India’s clean-energy transition.

What is REC? RECs Full Form and Meaning

REC stands for Renewable Energy Certificate. It is a market-based instrument that proves a specific quantity of electricity was generated from an eligible renewable energy source, such as solar, wind, or hydropower.

The physical electricity and its renewable value are treated separately. The electricity is supplied to the grid and sold normally, while the renewable attribute is recorded as a certificate that can be transferred or traded.

RECs are also commonly referred to as:

• Renewable energy credits
• Green energy certificates
• Clean energy certificates

Although the terms may differ, they’re all documented proof of renewable electricity generation.

What Does One REC Represent?

One REC represents 1 megawatt-hour (MWh) of renewable electricity injected into the grid.

This is equal to 1 MWh or 1,000 kilowatt-hours (kWh) or 1,000 electricity units.

Under the current 2026 REC framework, certain renewable energy technologies may receive more than one REC credit for every MWh generated through a multiplier. We have explained how these multipliers work later in the guide.

What Exactly Does The REC Certificate Contain?

An REC Energy Certificate does not contain or deliver physical electricity. Instead, it carries the renewable attribute associated with that electricity.

The REC system therefore separates renewable generation into two components:

This separation allows the electricity and its environmental value to be sold to different buyers. A renewable generator can sell the physical power through the grid while transferring the REC credits to an entity that needs to meet a renewable energy obligation or target.

Why Was the REC Mechanism Introduced in India?

India introduced the REC mechanism to make renewable energy available through a national market, even when the electricity itself cannot be purchased directly from a renewable generator.

The system addresses three major challenges.

1. Renewable resources are unevenly distributed: Solar, wind, and hydropower potential varies widely across India. Some states can generate large amounts of renewable electricity, while others have a limited project capacity. The REC market bridges this gap. A renewable generator in one state can receive REC certificates for eligible generation, while an obligated entity in another state can purchase those certificates to meet its renewable energy requirement.
2. Direct renewable power is not always available: Many DISCOMs, factories, and open-access consumers cannot meet their entire renewable requirement through direct procurement. They may face challenges such as limited renewable generation in their region, lack of suitable land for a captive power plant, difficulty signing a long-term renewable Power Purchase Agreement, and a shortfall between renewable power purchased and the required target. Renewable Energy Certificates (RECs) provide an alternative way to cover this shortfall and meet Renewable Purchase Obligation (RPO) or Renewable Consumption Obligation (RCO) requirements.
3. Renewable generators need additional revenue: A generator can receive revenue for the physical electricity and additional revenue for the environmental attribute, where eligible. The official objective is to promote renewable energy while helping obligated entities meet RPO requirements despite geographic mismatches.

How Do Renewable Energy Certificates Work in India?

The REC process converts verified renewable electricity generation into energy certificates that can be separately traded and used for compliance or eligible renewable energy claims.

Here’s how it works:

• Step 1 – Renewable electricity is generated: An eligible wind, hydro, or solar renewable energy project produces clean electricity and supplies it to the grid.
• Step 2 – Generation is metered and verified: The relevant load dispatch center or authorized agency confirms how much renewable electricity was generated and injected into the grid.
• Step 3 – The entity receives accreditation: The designated State Agency checks the project’s eligibility and grants accreditation under the REC mechanism.
• Step 4 – The entity registers with the Central Agency: The accredited entity registers on the national REC Registry in India before applying for certificates.
• Step 5 – RECs are issued: Renewable Energy Certificates are credited against the project’s verified and eligible renewable electricity generation.
• Step 6 – Certificates are sold or transferred: The generator sells the RECs through an authorized power exchange or electricity trader.
• Step 7 – The buyer uses the Renewable Energy Certificate in India: The certificate may be used to meet an RPO, RCO, or another eligible renewable energy requirement.
• Step 8 – The certificate is redeemed or extinguished: Once claimed, the REC is permanently cancelled in the Registry so it cannot be sold or used again.

Who Issues Renewable Energy Certificates in India?

A common misconception is that the REC Registry issues certificates independently. In practice, the National Load Despatch Centre (NLDC) acts as the Central Agency under the regulations of the Central Electricity Regulatory Commission (CERC).

It formally issues RECs, while several other bodies, listed below, handle accreditation, verification, trading, and record-keeping.

• Central Electricity Regulatory Commission (CERC): Creates and updates the regulations governing the REC mechanism in India.
• National Load Despatch Centre (NLDC): Acts as the Central Agency. It registers eligible entities, issues RECs, maintains the REC Registry, and records certificate transactions.
• State Agencies: Accredit eligible renewable energy entities located within their respective states.
• State Load Despatch Centres (SLDCs): Verify and account for renewable electricity generated by intra-state projects.
• Regional Load Despatch Centres (RLDCs): Verify and account for generation from projects connected to the inter-state transmission system.
• Renewable Energy Certificate Registry of India: Records the issuance, ownership, inventory, transfer, and redemption of every REC certificate. It is the registry platform operated by the Central Agency.
• Indian Energy Exchange (IEX) and Power Exchange India Limited (PXIL): Provide authorized platforms for exchange-based REC transactions.
• Electricity traders: Assist with REC transfers through routes permitted under the regulations.

Therefore, the NLDC, acting as the Central Agency, formally issues Renewable Energy Certificates in India after the entity and its generation have been verified.

What is the REC Registry in India?

The Renewable Energy Certificate Registry of India is the central digital system used to track every REC from issuance to redemption. It is maintained by the Central Agency and acts as the official record of all REC-related activity in India.

The Registry records:

• Registered and eligible entities
• RECs issued to generators
• Available certificate inventory
• Certificates blocked for transactions
• Ownership transfers
• Redeemed or extinguished certificates
• Complete transaction history

The REC Registry makes the certificate market transparent and prevents double counting.

Here’s why it is so important:

• Traceability: Each renewable energy certificate in India can be tracked through its full lifecycle.
• No double use: A redeemed certificate cannot be sold or claimed again.
• Audit trail: Every issuance, transfer, and redemption is recorded.
• Regulatory oversight: Authorities can monitor REC activity and compliance.
• Buyer verification: Buyers can confirm that a certificate has been properly redeemed.

REC Registry vs REC Certificate

The REC Registry and an REC certificate are closely connected, but they are not the same. The certificate is the tradable renewable attribute, while the Registry is the digital system that records and tracks it.

Here’s a side-by-side comparison of both:

Simply put, an REC is the certificate, while the REC Registry records who owns this certificate, how it is transferred, and when it is redeemed.

Who is Eligible to Receive RECs?

Renewable Energy Certificates are not issued to every entity that generates or purchases renewable electricity.

Under the REC Regulations, the following entities qualify:

• Renewable energy generating stations: Grid-connected systems and projects generating electricity from eligible sources such as solar, wind, hydro, biomass, or waste-to-energy.
• Captive generating stations: Renewable energy plants established primarily for the owner’s own electricity use.
• Renewable plants with self-consumption: A renewable plant may qualify even if it does not meet the formal definition of a captive generating plant, provided it has self-consumption and meets the other eligibility conditions.
• Distribution licensees: Electricity distribution companies that purchase renewable electricity beyond their Renewable Purchase Obligation (RPO).
• Open-access consumers: Consumers that purchase renewable electricity through open access beyond their RPO.

Eligibility Conditions

Here are the eligibility conditions that must be met to be eligible to receive an REC certificate:

• Tariff and RPO treatment: For the capacity seeking RECs, the tariff must not have been determined or adopted under Section 62 or Section 63 of the Electricity Act, or the electricity must not be sold or counted towards an obligated entity’s RPO.
• No double counting: Electricity already used by a buyer to meet its RPO cannot also earn tradable RECs.
• No concessional network charges: The renewable generating station must not have received waived or concessional transmission or wheeling charges for the eligible electricity.
• Grid connection: The renewable generating station must be connected to the grid.
• Self-consumption restrictions: Captive and other qualifying self-consuming renewable plants may receive RECs, but certificates issued against self-consumed electricity cannot be sold.
• Excess renewable procurement: Distribution licensees and open-access consumers are eligible only for renewable electricity purchased beyond their RPO, as certified by the concerned State Commission.
• Accreditation and registration: The entity must be accredited, or deemed to be accredited, and registered under the REC mechanism before certificates can be issued.

Can Every Rooftop Solar Owner earn RECs?

Installing commercial rooftop solar does not automatically entitle the owner to tradable Renewable Energy Certificates.

A rooftop solar plant may qualify only when:

• It is connected to the grid: Off-grid rooftop systems are not eligible under the REC mechanism.
• It meets the REC eligibility conditions: The electricity and its renewable attribute must not already be counted towards another entity’s Renewable Purchase Obligation or renewable claim.
• It is accredited and registered: The owner must complete accreditation with the appropriate agency and registration with the Central Agency.
• Its generation is properly recorded: Eligible electricity must be metered, verified, and included in the approved energy-accounting system.
• Self-consumption is treated correctly: Rooftop solar power plants with self-consumption may qualify under the amended regulations, but RECs issued against self-consumed electricity are not available for ordinary sale.

Therefore, a rooftop owner may be technically eligible, but earning and selling RECs is not automatic.

Who Buys RECs in India?

REC buyers in India fall into two main groups. One includes entities that purchase REC certificates to meet a legal obligation, and the second includes organizations that buy them voluntarily to support renewable energy goals.

Let’s explore both:

• Obligated buyers: These entities buy RECs to meet their Renewable Purchase Obligation (RPO) or Renewable Consumption Obligation (RCO) when their direct renewable energy procurement falls short. They may include distribution companies, open-access consumers, and captive power consumers.
• Voluntary buyers: They purchase RECs by choice rather than because of a legal requirement. These are usually businesses working toward renewable electricity targets, sustainability and environmental reporting goals, investor or customer expectations, and corporate climate commitments. For these organizations, buying REC credits provides traceable proof that renewable electricity was generated on their behalf, even when they continue to receive physical power from the regular electricity grid.

Types of RECs and Certificate Multipliers

India’s REC framework has changed significantly. Earlier, certificates were divided into solar and non-solar categories. Today, RECs are technology-neutral. The renewable technology instead determines how many certificates may be issued for each megawatt-hour of eligible generation through an REC multiplier.

Solar and Non-solar RECs: the Older Classification

Under the earlier REC framework, certificates were divided into:

• Solar RECs: Issued against eligible solar electricity generation.
• Non-solar RECs: Issued against eligible wind, hydro, biomass, and other non-solar renewable generation.

The two categories were traded separately. However, the Central Electricity Regulatory Commission (CERC) removed this distinction under the 2022 REC Regulations, which came into force on 5 December 2022. The current market trades a single, technology-neutral REC.

Current Technology-Neutral and Multiplier-based Approach

The 2026 amendment introduced the multiplier system.

A multiplier determines the number of RECs an eligible project receives for each megawatt-hour of renewable electricity.

• Multiplier of 1: One REC is issued for each MWh.
• Multiplier of 1.5: 1.5 RECs are issued for each MWh.
• Multiplier of 3: Three RECs are issued for each MWh.
• Multiplier of 4: Four RECs are issued for each MWh.

Higher multipliers support technologies that have higher costs, lower commercial maturity, or greater ability to support the grid during peak demand.

Projects commissioned after the amendment took effect on 1 April 2026 receive the following multipliers:

How are RECs Bought and Sold in India?

Renewable Energy Certificates can be bought and sold through two permitted channels only. In both cases, the transfer is recorded in the REC Registry to ensure that certificate ownership remains traceable.

Here are both the approved ways.

1. Through power exchanges: REC trading currently takes place on the Indian Energy Exchange (IEX), Power Exchange India Limited (PXIL) and Hindustan Power Exchange (HPX). Buyers and sellers submit bids during trading sessions, and prices are determined through bidding.
2. Through electricity traders: Licensed electricity traders can assist with REC transfers at mutually agreed prices. The seller informs the Central Agency, the certificates are blocked in the REC Registry, and the trader reports the completed transaction so the ownership records can be updated.

How is the Price of an REC Decided?

The price of a Renewable Energy Certificate is not fixed by the Central Electricity Regulatory Commission (CERC). Under the current framework, it is determined by the market and can change with demand, supply, and trading activity.

• On power exchanges: Buyers and sellers submit bids, and the REC price is discovered through the exchange’s bidding process.
• Through electricity traders: The buyer and seller negotiate and mutually agree on the price, with the licensed trader enabling the transaction.

Unlike the earlier framework, the 2022 REC Regulations, amended in 2026, do not have a floor price or a maximum forbearance price. This allows buyers and sellers to determine the market value of REC certificates.

However, CERC can intervene when it observes:

• An abnormal increase or decrease in REC prices
• Sudden price volatility
• Unusually high or low transaction volumes

Why Are Renewable Energy Certificates Important?

Understanding ‘what are renewable energy certificates’ brings most users to the next obvious question: why are they so important? RECs matter because they create value for renewable generators, help obligated entities meet regulatory targets, and give businesses a verifiable way to support renewable electricity claims.

Let’s find out why these green energy certificates are so important.

• Why are RECs important for renewable generators? Eligible generators can earn revenue from selling physical electricity and separately selling the renewable attribute through RECs. This improves project economics and supports investment in renewable capacity.
• Why are RECs important for DISCOMs and obligated entities? Distribution companies and other obligated entities can use RECs to cover shortfalls in their Renewable Purchase Obligation (RPO) or Renewable Consumption Obligation (RCO). This helps them meet compliance targets when direct procurement is insufficient.
• Why are RECs important for businesses? Companies can buy RECs to support renewable electricity targets, sustainability reporting, and supply-chain commitments without owning a renewable power plant. The certificate provides a traceable record for an eligible renewable energy claim.
• Why are RECs important for the electricity market? The REC mechanism creates demand for renewable attributes across states. It allows renewable-energy-rich regions to supply REC certificates to buyers elsewhere. It also encourages investment in a wider range of clean-energy technologies.

Limitations of Renewable Energy Certificates

RECs are useful, but they have some limitations that buyers should understand.

• Limited additional impact: Buying low-priced certificates from existing projects may not always lead to new renewable capacity.
• Credibility depends on proper use: REC certificates must be correctly issued, transferred, and redeemed to support a valid claim.
• No substitute for efficiency: RECs do not reduce electricity consumption or replace energy-efficiency measures.
• Different from carbon credits: RECs represent renewable electricity, while carbon credits represent avoided or removed greenhouse-gas emissions.
• Eligibility can be complex: Tariffs, concessions, project structure, and applicable regulations can affect whether a project qualifies.
• Prices can fluctuate: REC prices vary with market demand, supply, and trading activity.

Conclusion

Solar renewable energy certificates can turn the renewable value of electricity into a traceable instrument that can be issued, traded, and claimed separately from physical power. They help generators earn from renewable attributes, allow obligated entities to meet RPO shortfalls, and give businesses a verified route to support clean-energy goals.

For commercial and industrial businesses, RECs, however, are one option within a wider renewable energy strategy. On-site rooftop solar installation helps reduce electricity costs by up to 70% and increase the share of power sourced directly from renewable energy. Intrigued? Book a free solar consultation call with SolarSquare now to assess the right commercial or industrial solar system for your business.

FAQs

How long is an REC valid?

An REC remains valid until it is redeemed. The 15-year rule applies to the project’s certificate multiplier, not to the validity of individual certificates. After 15 years, the project generally receives one REC per MWh of eligible generation.

Why do renewable energy certificates matter?

RECs allow renewable attributes to be transferred across regions. They help obligated entities meet Renewable Purchase Obligation requirements and give voluntary buyers traceable proof for eligible renewable electricity claims.

Are RECs and carbon credits the same?

No, they’re different. An REC represents the renewable attribute of 1 MWh of electricity, while a carbon credit represents one metric ton of greenhouse-gas emissions reduced, avoided, or removed.

Are REC and renewable energy credit the same?

Yes, these terms can be used interchangeably. However, the official term used under India’s CERC framework is Renewable Energy Certificate.

What is the difference between an REC and a PPA?

A Power Purchase Agreement (PPA) is a contract for purchasing electricity from a generator. An REC, on the other hand, transfers the renewable attribute associated with electricity without delivering the physical power itself.

What happens when a solar generator sells its RECs?

The generator can retain the revenue earned from selling the physical electricity, but the renewable attribute passes to the REC buyer. The generator can no longer claim that same renewable benefit.

Can an REC be sold more than once?

No. Once an REC is exchanged and used, it is redeemed and extinguished in the Registry. This prevents the same renewable attribute from being traded or claimed again.

What is the difference between an REC and an I-REC?

An Indian REC is issued under CERC regulations and can be used within India’s domestic REC and compliance framework. An I-REC for Electricity, or I-REC(E), is an international Energy Attribute Certificate used in multiple countries.

Do RECs provide physical renewable electricity?

No, an REC transfers only the renewable attribute of the electricity. The buyer continues to receive physical electricity through the regular grid.

Where are RECs traded?

RECs can be traded through CERC-approved power exchanges or licensed electricity traders. Current exchange-based trading takes place on the Indian Energy Exchange, Power Exchange India Limited, and Hindustan Power Exchange.

What is a solar renewable energy certificate?

A solar Renewable Energy Certificate is proof that eligible electricity was generated from a solar power project. One REC corresponds to 1 MWh, or 1,000 units, of renewable electricity. Under India’s older framework, solar RECs were a separate category from non-solar RECs. The current REC framework is technology-neutral. Therefore, solar projects receive regular RECs rather than a separately traded solar certificate.