| Physical Data | 1960 | 1970 | 1980 | 1990 | 1999 |
|---|---|---|---|---|---|
| Units sold (million units) | 121 | 540 | 1316 | 2899 | 4960 |
| Maximum Demand MVA | 29 | 111 | 258 | 546 | 1065 |
| High Tension Mains KM's | 326 | 700 | 1000 | 1437 | 2473 |
| Low Tension Mains KM's | 418 | 841 | 1143 | 1671 | 2644 |
| No. of Substations | 226 | 718 | 1446 | 2257 | 3657 |
| No. of Consumers (in '000) | 80 | 260 | 598 | 1210 | 1894 |
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