CtrlS — NTPC Green Energy Renewable Power MoUCtrlS Datacenters Limited and NTPC Green Energy Limited · pan-India · 2,000 MW+

On 31 October 2025 in New Delhi, NTPC Green Energy Limited and CtrlS Datacenters signed a memorandum to explore renewable energy projects of 2 GW or more, supplying round-the-clock power on a pan-India basis for CtrlS's captive consumption. The MoU runs for two years. It contains no tariff, no site, no land, no transmission arrangement and no data-centre capacity. Gridvik records it because it is the clearest public signal of how India's largest Rated-4 operator intends to keep its racks powered — and because the number in the headline is roughly three times what it will actually deliver at the meter.

1At a glance

2What the memorandum says

The language is careful and worth reading literally. The two firms will explore business opportunities of mutual interest towards developing renewable projects of 2 GW or more, for the supply of round-the-clock renewable power to CtrlS data centres on a pan-India basis for captive consumption. Development may be greenfield or through acquisitions — an important detail, because an acquisition path means the 2 GW could be bought rather than built, and could arrive years earlier than a greenfield schedule implies.

Both firms commit to working together to plan and implement the capacity. That is the entire substance of it. No financial or timeline detail was released at signing, and none has been released since.

There is a second, less-noticed number in the same week. The Union cabinet committee on economic affairs raised NTPC's permitted investment in NTPC Green Energy and its subsidiaries from an earlier ceiling of ₹7,500 crore to ₹20,000 crore, to support capacity addition against NTPC Green's 60 GW by 2032 target. That is the money behind the mandate — and it is not earmarked for CtrlS.

3Two gigawatts of what

This is the number that matters and almost nobody runs it. A gigawatt of solar in India produces at a capacity utilisation factor of roughly 22–25%. Wind runs 28–35%. A blended round-the-clock package without storage therefore delivers something close to 30% of nameplate as average output, and nothing at all for the eight hours after sunset.

So 2,000 MW of announced renewable capacity is roughly 600 MW of average power — before any storage is added, and before transmission losses. Round-the-clock supply is a stronger promise than plain renewable supply: it obliges the seller to firm the output, which in practice means batteries or pumped storage, which is not mentioned in the announcement. If storage is added, less than 2,000 MW of generation fits in the same envelope.

4Two power tracks, one operator

CtrlS is assembling its electricity from two directions at once, and the order matters.

Read together, the sequence is coherent. First a green-power framework, then a sovereign-scale equity partner, then grid-side debt for the largest single campus. None of the three is a power purchase agreement. All three are commitments to try, and the equipment that gets ordered sits downstream of whichever one converts first.

The tractable signal for a supplier is not the 2 GW. It is that CtrlS has now committed publicly to a captive, round-the-clock, renewable-heavy power model at national scale. That model needs storage, switchgear, high-voltage substations and transmission interconnection at every campus — none of which are announced, all of which have to exist before a single additional megawatt of IT load can be energised.

5Timeline

• 31 October 2025
  NTPC Green Energy and CtrlS sign the memorandum in New Delhi for 2 GW or more of round-the-clock renewable capacity, captive, pan-India, greenfield or acquired. Two-year term.
• 1–4 November 2025
  NTPC Green Energy, CtrlS and NTPC’s own disclosure to the exchanges carry the same facts. No tariff, no site, no schedule in any of them.
• November 2025
  The Union cabinet committee on economic affairs raises NTPC’s permitted investment in its green subsidiaries from ₹7,500 crore to ₹20,000 crore.
• 17 June 2026
  CtrlS closes the ₹7,000 crore Canada Pension Plan transaction. The power framework is not mentioned in it.
• 22 October 2026
  No power purchase agreement, no site, no land, no storage contract and no transmission arrangement has been published in the eleven months since signing.
• 31 October 2027
  The memorandum lapses on its current terms unless extended. That is twelve months from this record.

6What this changes for a vendor

Gridvik does not publish private contact data. The rows above with a lock are the paid layer.

7Assumptions and method

8Limits and open questions

9Sources

This record was compiled entirely from publicly available sources, cross-checked against one another.