About this dataset
- ·Covers 2022-12-26 – 2026-10-02
- ·132K rows (live estimate)
- ·Resolution: 15min
- ·Exports built fresh from the live database at purchase time
- ·Coverage report with every known gap disclosed (below)
₹2,499
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Sold by India Energy Atlas · Commercial license · cite: India Energy Atlas (energymap.in), compiled from ERPC DSM/RRAS/FRAS/SCED account files and Grid-India / state-SLDC frequency telemetry
Enterprise delivery
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Pro-forma invoicing and bank transfer available for institutional buyers.
About this dataset
The frequency of India's synchronous grid (50 Hz nominal) at true 15-minute resolution — 96 blocks per day, all-India. India has run as a single synchronous grid since December 2013, so one frequency series applies nationwide.
The measured history (Dec 2022 to Aug 2025) is reconstructed from the Eastern Regional Power Committee (ERPC) DSM/RRAS/FRAS/SCED settlement accounts — the block frequency the grid is actually settled against — and continues to real-time via the live mean of state-SLDC frequency telemetry. Each row carries the block-mean frequency, the signed deviation from 50 Hz, the IST block number (1-96) and the source that produced it.
Built for IEGC band-compliance analytics, DSM and ancillary-services studies, frequency-response and BESS modelling, and grid-stability research.
Coverage — measured, not promised
Measured 15-min blocks 2022-12-26 to 2025-08-31 from ERPC DSM accounts (973 days, 96 blocks/day; one 7-day gap 13-19 May 2024), then continued to real-time from the live SLDC-average feed. Earlier than Dec 2022 is not available from this source.
| grid_frequency | ||||||||||||||||||||||||||||||||||||||||||||||
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| 2022-12 | 2023-03 | 2023-06 | 2023-09 | 2023-12 | 2024-03 | 2024-06 | 2024-09 | 2024-12 | 2025-03 | 2025-06 | 2025-09 | 2025-12 | 2026-03 | 2026-06 | 2026-09 |
Known holes — disclosed, never hidden
- grid_frequency
- 1,29,541 rows
- 2022-12-25 – 2026-09-28
Coverage stats generated 2026-09-28 by the weekly sample-assets pipeline · 1,29,541 total rows
Data dictionary
| Column | Type | Description |
|---|---|---|
| block_start_utc | timestamptz | 15-min block start, UTC |
| block_start_ist | timestamptz | 15-min block start, IST (UTC+5:30) |
| block_no | int | IST time-block number 1-96 (block 1 = 00:00-00:15 IST) |
| frequency_hz | float | All-India grid frequency for the block, Hz (4 dp) |
| deviation_hz | float | Signed deviation from the 50.00 Hz reference |
| sample_count | int | Samples averaged into the block (1 for the measured ERPC seed) |
| source | text | erpc_dsm_15min (measured ERPC DSM seed) / derived_state_sldc_frequency (live SLDC-average) |
Caveats — read before you buy
- Compiled from ERPC public DSM/RRAS/FRAS/SCED account files; not an official Grid-India real-time feed.
- Two measurement methods are stitched: ERPC settlement-block frequency (history) and the mean of state-SLDC frequency readings (live tail). On a synchronous grid these agree closely; the `source` column marks which produced each block.
- One 7-day gap: 13-19 May 2024 (source files unavailable).
License & citation
Commercial
Cite as: India Energy Atlas (energymap.in), compiled from ERPC DSM/RRAS/FRAS/SCED account files and Grid-India / state-SLDC frequency telemetry
Frequently asked
What exactly do I get when I buy All-India Grid Frequency, 15-Minute Blocks?
A one-time export built fresh from the live India Energy Atlas database at purchase time, delivered as csv_gz via a private tokened download link, with a per-state/per-month coverage report and a data dictionary included. Measured 15-min blocks 2022-12-26 to 2025-08-31 from ERPC DSM accounts (973 days, 96 blocks/day; one 7-day gap 13-19 May 2024), then continued to real-time from the live SLDC-average feed. Earlier than Dec 2022 is not available from this source.
How is this licensed?
Commercial license for single-organization internal use. Attribution: India Energy Atlas (energymap.in), compiled from ERPC DSM/RRAS/FRAS/SCED account files and Grid-India / state-SLDC frequency telemetry. Redistribution or resale of the raw series is not permitted.
How fresh is the data and how are gaps handled?
The catalog shows live freshness straight from the source tables (15-minute server cache). Exports are built at purchase time, and every known multi-day gap is disclosed in the coverage report on this page — we never sell around a hole silently.
Can I configure the date range and states?
Yes — the configurator lets you pick the time window, states and format before checkout, and the price scales with the window you pick.
Do you offer pro-forma invoices or bank transfer?
Yes. Institutional buyers can request a pro-forma invoice and pay by bank transfer; the order unlocks automatically once payment is marked received. Stripe checkout (cards/UPI) is available for self-serve purchases.
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← All datasets·Source: India Energy Atlas · api.energymap.in · coverage and samples regenerated weekly