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RLMM vs ALMM: wind, hybrid & co-located projects in 2026

Which list governs which component when a tender mixes wind and solar — the wind turbine model list for turbines, ALMM for modules, who maintains each, and what an EPC must verify before bidding.

By the SuryaHub team Updated 20 June 2026 12 min read
TL;DR for EPCs
  • ALMM governs the solar modules; the wind model list governs the wind turbines.
  • In a hybrid plant, each list follows its own component — read the tender for both by name.
  • The wind list and ALMM are maintained separately (MNRE / NIWE for wind — verify).
  • Co-located and hybrid differ in structure, but the list still follows the component.
  • Both lists approve specific models, on a specific date — not whole companies.
  • The wind list name, owner and status are point-in-time — verify against the current MNRE / NIWE list.

Hybrid and co-located tenders trip up EPCs who only know the solar rule. The solar side is ALMM. The wind side runs on its own model list. Get them mixed up and you can quote a turbine or module that the tender will not accept. This guide maps each list to its component, so you bid the right hardware the first time.

What RLMM is — the wind-turbine analogue of ALMM

RLMM is the wind side counterpart of ALMM: a list of approved wind turbine models and the manufacturers behind them. The name often used is the Revised List of Models and Manufacturers. Just as solar tenders restrict you to approved modules, wind tenders restrict you to approved turbine models. Only listed models can go into the project.

Why a separate list exists for wind

Wind turbines are large, complex machines with their own type-certification and testing path. A solar module list cannot speak to a turbine's rotor, gearbox or generator. So the wind sector keeps its own approved-model list, built on wind-specific certification. The idea is the same as ALMM — buyers want proven, tested equipment — but the engineering behind it is different.

Verify the current name and status first

The wind model list's exact name, owner and status are point-in-time facts. They have changed before and can change again. Treat any name in this guide as a starting point, then verify it against the current MNRE / NIWE list before you rely on it for a bid. Never quote a turbine on the strength of an old list.

What ALMM is — the solar module list

ALMM is the Approved List of Models and Manufacturers for solar, and it governs solar PV modules. A model must appear on ALMM for many government-linked solar tenders to accept it. The list names specific module models from specific makers, not whole companies, so two models from one factory can have different status.

List-I, modules and cells

The familiar ALMM list for modules is often called List-I. Over time the policy has signalled a move toward an approved-cell list as well, so the rule can reach further up the supply chain. For a hybrid plant's solar block, confirm whether your tender binds only the module or the cell too. Our ALMM list explained guide breaks this down.

Which list governs which component in a hybrid plant

In a hybrid plant, the wind list governs the wind turbines and ALMM governs the solar modules. That is the whole rule in one line: each list follows its own component. There is no single list that covers a wind-solar plant end to end. You check each block against its own list.

The table below lays the two lists side by side so you can see the split at a glance. Use it as a first reference, then confirm the live details in the actual tender and on the government pages.

Full name
Wind (RLMM): Revised List of Models and Manufacturers (verify current name)
Solar (ALMM): Approved List of Models and Manufacturers
What it governs
Wind (RLMM): Wind turbine models and their manufacturers
Solar (ALMM): Solar PV modules and, by phase, solar cells
Maintained by
Wind (RLMM): MNRE / NIWE (verify current owner)
Solar (ALMM): MNRE
Applies to which component
Wind (RLMM): The wind turbine generators in a project
Solar (ALMM): The solar modules in a project
Status (point-in-time)
Wind (RLMM): Verify against the current MNRE / NIWE list
Solar (ALMM): Active and enforced for many tenders
The wind list name, owner and status are point-in-time — verify against the current MNRE / NIWE list. Source: MNRE and NIWE (verify).

One plant, two checks

Think of a hybrid plant as two compliance jobs under one contract. The turbines pass or fail on the wind list. The modules pass or fail on ALMM. A turbine being approved tells you nothing about your module, and the reverse is also true. Run both checks, keep the evidence for both, and you avoid a nasty surprise at supply.

Hybrid vs co-located projects — does the rule change?

The list rule does not change between hybrid and co-located projects; the list still follows the component. What changes is how the project is packaged. Knowing the difference helps you read the tender and the agreements correctly, but it does not move the wind turbine off the wind list or the module off ALMM.

What a hybrid project is

A hybrid project combines wind and solar generation, usually behind one connection point and one power agreement. The two sources share infrastructure and often a single tender. The aim is steadier output, since wind and sun peak at different times. Inside that one project, wind turbines still answer to the wind list and modules still answer to ALMM.

What a co-located project is

A co-located project places separate wind and solar plants on or near the same site, often under separate agreements or owners. They may share land or a substation but stay distinct on paper. Again the list follows the component: the wind plant uses the wind list, the solar plant uses ALMM. The packaging differs; the compliance logic holds.

Why the label still matters

The hybrid or co-located label drives the contract structure, the metering and which tender clauses apply to which block. Read it so you know where each list requirement sits in the document. See which projects ALMM applies to for how solar-side applicability is decided.

Who maintains each list

MNRE maintains ALMM for solar modules, while the wind turbine model list sits with MNRE and the National Institute of Wind Energy (NIWE). They are different functions because solar modules and wind turbines need different certification. Knowing the owner tells you where to verify status and where to chase a listing problem.

MNRE and the solar list

The Ministry of New and Renewable Energy (MNRE) issues the orders that create and update ALMM. When ALMM scope or timing changes, it changes through an MNRE order. So MNRE is your source of truth for what ALMM covers and when a phase starts. Always read the latest order rather than a summary.

NIWE and the wind list

The National Institute of Wind Energy (NIWE) handles wind turbine type certification and the wind model listing function under MNRE policy. Because the exact name and ownership of the wind list can change, NIWE's own page is where you confirm the current position. Treat NIWE as the place to verify, not a fixed fact you can quote from memory.

How tenders cite each list

Tenders cite each list by name and tie it to the matching component, so a hybrid tender can name the wind list for turbines and ALMM for modules in the same document. The clause usually says the equipment must come from the relevant approved list as on a stated date. Your job is to find both clauses and read them carefully.

Search the document for both lists

Do a plain text search of the tender for the wind list and for ALMM. A hybrid tender that only names one list may still expect the other by reference, so read the technical and eligibility sections fully. Our guide to SECI, NTPC and CPSU clauses shows how the solar wording typically reads.

Watch the open-access angle

If the project sells through open access or wheeling rather than a central tender, the rules can be read differently. See open access and wheeling rules before you assume a list applies or does not apply to a private hybrid plant.

Batteries, inverters and balance of plant

ALMM today centres on solar PV modules, so whether it reaches inverters, batteries or other balance of plant depends on the specific MNRE order in force. Hybrid plants often add storage and power-electronics, and these items may sit outside the module list. Do not assume the whole plant is covered by one rule.

Storage in a hybrid plant

Batteries are common in wind-solar hybrids that promise firm or peak power. Whether a battery must come from any approved list depends on the tender and the current policy, not on ALMM by default. Check the storage clause separately. Our ALMM scope guide for inverters, wind and batteries covers what is and is not in scope today.

Inverters and shared infrastructure

Inverters, transformers and the shared substation sit in their own standards world, often governed by BIS and tender technical specs rather than an approved-model list. Quote them against the tender specification and the relevant BIS standards. Keep these checks separate from your module and turbine list checks so nothing falls through the gap.

What an EPC must check before bidding

Before bidding a hybrid or co-located tender, an EPC must confirm both lists apply to the right components and that each specific model is listed on the required date. The checklist below turns that into concrete steps. Run it on every mixed tender, because the cost of a wrong assumption lands at supply, when it is hardest to fix.

1

Read the tender for both lists

A hybrid tender can name the wind list for turbines and ALMM for modules. Search the document for each by name before you cost anything.

2

Confirm the wind list name and owner

The wind model list and its maintaining body change over time. Verify the exact current name and scope against the MNRE / NIWE page, not memory.

3

Check the model, not just the maker

Both lists approve specific models, not whole companies. A manufacturer can have one approved model and one that is not listed.

4

Check the effective date

A model must be on the relevant list on the date the tender requires — usually bid submission or supply. A future delisting can break your supply plan.

5

Separate module from cell scope

ALMM solar duties can extend from modules to cells in later phases. Confirm which component your tender actually binds for the solar block.

Keep the evidence on file

For each turbine model and each module model, keep a dated screenshot or extract showing it on the relevant list. When a buyer or auditor asks, you produce proof in seconds instead of scrambling. This habit also protects you if a model is delisted after you have committed, because you can show what the list said on the day you bid.

How SuryaHub helps you bid mixed tenders with confidence

Mixed tenders multiply the things you must track, and that is where work slips. SuryaHub keeps your approved wind and solar models, the tender clauses and the supply dates in one place, and runs each job through procurement and inventory and government workflows so a list change does not quietly break a bid. SuryaHub is pre-revenue; real pilots are Suryantra Energy and RGESPL, and every list figure here must still be verified against the current MNRE or NIWE list.

Track both lists on one platform

See how SuryaHub keeps approved models, clauses and supply dates aligned.

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Frequently asked questions

What is RLMM and how is it different from ALMM?+

RLMM is the wind side analogue of ALMM. ALMM, the Approved List of Models and Manufacturers, governs solar PV modules. The wind list governs wind turbine models. In a hybrid plant each list covers its own component. Verify the current wind list name and scope against the MNRE or NIWE page before you rely on it.

In a wind-solar hybrid project, which list governs which component?+

In a wind-solar hybrid project, the wind list governs the wind turbine models and ALMM governs the solar modules. The two lists are separate and apply to separate components. Read the tender for both by name, because a hybrid tender can cite each list for its own block of the plant.

Who maintains the wind turbine list and who maintains ALMM?+

MNRE maintains ALMM for solar modules. The wind turbine model list sits with MNRE and the National Institute of Wind Energy, or NIWE, which handles wind type certification. Ownership and the exact list name can change, so confirm the current maintaining body against the MNRE or NIWE page before bidding.

What is the difference between a co-located and a hybrid project?+

A hybrid project combines wind and solar generation, usually sharing one connection point and one tender. A co-located project places separate plants on or near the same site, often under separate agreements. The list rules still follow the component, so wind plant follows the wind list and solar plant follows ALMM in both cases.

Does ALMM cover batteries or inverters in a hybrid plant?+

ALMM today centres on solar PV modules. Whether it extends to inverters, batteries or other balance of plant depends on the specific MNRE order in force, which has changed over time. For a hybrid plant, check the current ALMM scope and the tender wording for each item rather than assuming everything is covered.

What must an EPC check before bidding a hybrid or co-located tender?+

An EPC must read the tender for both the wind list and ALMM by name, confirm the current wind list name and owner, check that each specific model is listed on the required date, and separate module scope from cell scope. Verify everything against the current MNRE or NIWE list, not from memory.

How does SuryaHub help with hybrid project compliance?+

SuryaHub keeps your approved wind and solar models, tender clauses and supply dates in one place, and runs procurement and government workflows so a list change does not break a bid. SuryaHub is pre-revenue; real pilots are Suryantra Energy and RGESPL, and list figures must still be verified against MNRE or NIWE.

Sources & references

The list functions, owners and scope below come from primary government sources. The wind list name, owner and status are point-in-time — always verify against the current MNRE and NIWE pages before you rely on them for a bid.

Written by the SuryaHub team · reviewed against MNRE, NISE & BIS sources · updated 20 June 2026.

Method: List functions and owners are taken from the government sources above and re-checked every 30 days. The wind list name, owner and status are point-in-time and must be verified against the current MNRE / NIWE list. SuryaHub is pre-revenue; only Suryantra Energy and RGESPL are real pilots.

Change log: 20 Jun 2026 — first published.

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