History of Tata Hydro-Electric Power Supply Comp. Ltd.

1910

- The Comp. was incorporated on 7th November, at Mumbai. The Company generate & supply Electricity. The Tata Hydro-Electric Power System comprises the Tata Hydro-Electric Power Supply Co., Ltd., the Andhra Valley Power Supply Co. Ltd., & the Tata Power Co., Ltd.

- Rs 200 per share received as application & allotment money on both pref. & equity shares up to 30th June 1911. 1,250 No. of equity shares allotted as fully paid-up.

1930

- Partly paid shares were fully paid up. 1,917 pref. shares were allotted as fully paid up for consideration other than cash & 1,562 pref. & 12,028 shares subscribed for in cash. Equity & shares subdivided.

1953

- 60,000 Right Equity shares issued at par in prop. 1:3. Only Rs 75 per share called & paid up.

1955

- Balance of Rs 25 per share called up on the 60,000 equity shares.

1961

- The Comp. together with its two associated companies decided to enter into a partnership arrangement with Ebasco India, Ltd., for the establishment in India of consulting engineering firm by name of `Tata-Ebasco Consulting Engineering Services'.

1967

- 24,000 right equity shares issued at par in prop. 1:10.

1969

- A new Comp. under the name Chemical Terminal Trombay, Ltd., was formed, in participation with other Tata Companies & Elephanta India Private Ltd., with the object to installation of storage tanks on a part of Company ash disposal area at Trombay & the laying of a pipeline connecting the storage tanks with the Mumbai Port Trust pier at Pir Pau.

1975

- 22,000 bonus shares issued in prop. 1.12.

1980

- The Comp. set up a new manufacturing facility at Bangalore, for commercial production of electronic items designed by its R&D lab.

1981

- 3,50,000 No. of equity shares issued at par to public in June 1981. 20,000 No. of equity shares issued to financial institutions on part conversion of 11% Fifth debentures [1981-88s].

1984

- The Capacity of set No. 1 at Bhira was uprated from 22 MW to 25 MW.

- The Comp. cancelled its 89,280-7% non-redeemable preference shares of Rs 100 each with effect from 1st April & allotted to the holders of these preference shares 89,280-15% secured non-convertible debentures of Rs 100 each in the proportion 1:1.

- The Comp. also privately placed with UTI 15%, [Ist Seriess], 11% [VIth Seriess] & 14% [VIIth Seriess] debentures. The sixth & seventh series debentures are redeemable at par in ten semi-annual instalments ending on 7th October 1995.

1986

- Forfeiture on 80 equity shares annulled, 1,44,910 No. of equity shares allotted at par to financial institutions upon conversion of loans.

1987

- A new double circuit 22/110 KV transmission line was constructed in North Mumbai from Borivli to Malad to meet the requirements of Municipal Corporation of Greater Mumbai besides meeting loads in Kandivili, Malad, etc. It was commissioned during 1988-89. The transmission & distribution network was also strengthened to maintain reliability of power supply by installation of 2 x 200 MVA, 220/110 KV interconnecting transformers at Trombay, a new 22 KV indoor switchgear at Saki, new capacitor banks at Saki & Kalyan etc.

- The Company proposals of 220/110 KV switching station & new 110 KV receiving station at Grant Road were cleared by State & Central Governments. The Comp. undertook to install a 180 MW combined cycle plant at Trombay using gas turbines.

1988

- A generator stator weighing 260 tonnes supplied by KWU W. Germany was lifted into position along with the boiler drum from BHEL, Trichy. A 110 KV oil filled cables for bulk transmission of power from Carnac to Backbay was laid to feed BEST receiving station.

- The Comp. in participation with Tata Projects Ltd., undertook to construct a 600 bed Grade i hotel at Tashkant [USSRs].

1989

- It was proposed to upgrade the transmission lines from Bhira to Dharavi from 110 KV to 220 KV. It was commissioned by March 1995.

- A new 110/22 KV sub-station was commissioned at Malad; power transformer capacity was augmented by 135 MVA in the area & new 22 KV outlets were commissioned at Kandivli, Malad, Ambivli & at 11KV at Versova.

- Six new outlets for BEST at 33 KV from Carnac receiving stations were also commissioned during the year.

- Approval from the state & the Central Governments were also received for installation of gas based 180 MW combined cycle plant at Trombay at a cost of Rs 212 crores to supplement the generating capacity in the state.

- The Companies are also associated with Siemens in the erection and commissioning of mechanical & electrical equipment for 4 x 130 MW gas turbines & 2 x 150 MW steam turbines at NTPC combined cycle power plant at Dadri in Uttar Pradesh.

- 2,085 forfeited equity shares reissued. [Prem. Rs 200s]

1990

- The Thermal Unit was shut down for 9 weeks for boiler re-certification & overhaul & reblading of four stages of the stationary side of IP turbine.

- The second 500 MW unit 6 at Trombay was trial synchronised with the grid on 23rd March.

- The Comp. took up two major generation projects, viz., 150MW Pumped Storage Unit at Bhira & a gas-based 180 MW Combined Cycle Plant at Trombay Thermal Power Station in case of major system disturbance and supply power to essential consumers, viz., Railways, BMC, BARC, etc.

- The Comp. also proposed to undertake overhauling & maintenance works on gas turbines at Uran in association with Kraftwerke Union, W. Germany.

- As per the agreement signed in October 1990, the Comp. was to seek clearance for World Bank/IFC loan amounting to $158 million by 30th September, 1991.

1991

- The generation at the Trombay thermal station suffered due to shortage of fuel particularly during the months October to December.

- With a view to upgrade & extend the life of plants, the Company proposed retrofitting of 150 MW Trombay Unit-4 to ensure efficient operation & utilisation of generators of Units 1, 2, & 3 as electrically driven synchronous condensors for power factor improvement.

- A new 110 KV substation comprising 2 x 90 MVA, 110/33 KV power transformers along with 33 KV indoor SF6 switchgear & supervisory control & data acquisition system was commissioned at Versova to feed the MCGB receiving station at Versova, Ambivli, Juhu etc.

- A new switching station comprising 3 x 250 MVA, 220/110/33 KV autotransformers, space saving 245 KV gas insulated switchgear and supervisory control & data acquisition system was established.

- The Comp. undertook the projects like: [is] Erection of fourth gas turbine unit at Dadri near Delhi [iis] KWU/Siemens awarded to the companies, [iiis] Undertook eletrical & i and C equipment installation works.

1992

- A modern 22 KV indoor SF6 switchgear was installed at Salsette and also a 60 MVAR new capacitor banks were installed at Versova & Malad. Apart from these, replacement of 110 KV oil circuit breakers by modern SF6 breakers at Kalyan, Ambernath, Vikhroli & Salsette receiving stations & extension of fibre optic communication network were also carried out.

- During April-May, the Comp. offered 8,01,143-14% secured redeemable partly convertible debentures of Rs 350 each on rights basis in the proportion 1 deb.: 1 equity shares held [all were taken ups]. Additional 1,20,171 debentures were allotted to retain oversubscription.

- Another 40,057 debentures were issued to the employees on an equitable basis [all were taken ups]. Additional 6,000 debentures were allotted to retain oversubscription.

- In addition 1,40,000 debentures were reserved for allotment to Tata Sons Ltd., Tata Industries Ltd., Investment Corporation of India Ltd., and Ewart Investments Ltd.

- Part-A of Rs 300 of face value of each debenture was to be converted into one equity share of Rs 100 each at a premium of Rs 200 per share on the expiry of 6 months from the date of allotment of debentures.

- Part-B of Rs 50 of face value of each debentures was to be redeemed on the expiry of 10 years from the date of allotment with an option to the Board to redeem the same at any time after years from the date of allotment of debentures.

- 11,07,379 No. of equity shares allotted on conversion of 14% debentures [including 1,792 shares allotted after 1st April, 1993.

- 2,11,266 No. of equity shares underlying Global Depository Shares allotted. 19,08,289 rights equity shares allotted [prem. Rs 200; prop. 1:1s] 8897 shares kept in abeyance.

1993

- The Comp. proposed to install 2 x 1.25 MW mini hydro generating units on the existing Bhivpuri tailrace channel by utilising available tailrace releases from existing power station.

- It was proposed to establish a 110 KV sub-station at Bandra-Kurla complex to meet power requirement of that area & also to establish a 110 KV power supply point at Mankhurd to meet additional load requirement of Central Railway.

- The first 120 MW steam turbine at Uran was synchronized & the second unit was scheduled for synchronization in August 1994.

1994

- The Trombay Unit-7 steam turbine generator was synchronised on 9th December, which generated 650 MUS with PLF of 61.9%.

- With a view to enhance the reliability of power supply to S. Mumbai, the Company look up a new 220 KV underground transmission system to Backbay Reclamation for a new 220 KV switching station.

- It was proposed to establish a 110 KV substation at Bandra-Kurala complex to meet the power requirement in S. Mumbai.

- Approval for use 90 MW pumped storage project at Bhivpuri not materialising the Comp. proposed to undertake 300 MW pumped storage project at Valvandi using westward flowing waters.

- During the year, the Comp. undertook the work of strengthening dams as per designs codes in respect of earthquakes. The Government of Maharashtra had accorded its permission for rebuilding a dam at Somwadi.

- The set No. 5 at Bhira was rehabilitated by changing the core and coils and was recommissioned along with a new more efficient 30 MVA generator transformer.

- At Vikhroli, an additional 90 MVA, 110/22 KV power transformer was taken into service to increase the reliability of power supply. Also, a new 25 MVA, 110/66 KV transformer at Parel was commissioned.

- Assistance was provided by Comp. to Siemens at Malaysia for operation of 400 MW Serdang power plant, to Tata Honeywell limited at Adelaide Australia, Pne & to Tata Consultancy Engineers at Bangalore for design/development & for factory acceptance tests of the simulator for Electricity Trust of Southern Australia.

- Equity shares subdivided. 38,03200 No. of equity shares allotted on preferential basis to associate companies.

- Second phase of Trombay combined cycle power project viz. 60 MW steam turbine & associated equipment was commissioned. Also, installation of motor-generator, pump/turbine & main transformer was commissioned in the synchronous condenser mode.

1995

- The 150 MW Pumped storage unit was commissioned in the synchronous condenser mode. The Comp. undertook the work of modernisation and renovation of old 12 MW hydro units at Bhivpuri & Khopoli Generating Stations.

- 560 No. of equity shares issued.

1996

- The 150 MW pumped storage unit at Bhira was commissioned. At Bhira generating station five 25 MW units were refurbished by installation of new modern turbine runners of higher efficiency.

- The Comp. strengthened the existing network by installing new 22KV indoor switchgear at Vikhroli sub-station, by replacing old oil/air blast circuit brackers by modern 110 KV breakers at various sub-stations, by retrofitting & uprating of existing 22 KV ABCBs by 22/33 KV modern SF6 breakers, by installation of new numerical type relays on transmission lines & by installation of new micro processor based metering system by replacing existing electro-mechanical type meters.

- The Comp. installed a major 220 KV underground transmission system from Dharavi receiving station to Backbay, South Mumbai. The Company also undertook to implement a 22 KV receiving station at Bandra-Kurla Complex to provide power supply to various commercial consumers in the area. To improve the continuous & reliable power supply, the Company proposed to set up 220 KV switching stations at Parel & Mahalaxmi.

- During the year, the Government of Karanataka awarded the Multi-fuel based 80 MW power project to the Company.

- 3.62.5 MW thermal generating units at Trombay were converted into synchronous condensers with a 1-2 MW static frequency converter in the starting system. Also a 36 KV switchgear with vacuum circuit breakers were commissioned thereby introducing vacuum breaker technology in medium voltage distribution TEC system.

1997

- The Comp. constructed a substation at Borivli to improve the supply to suburban areas. The Comp. also undertook to implement a 220 KV underground Ring System along with a new sub-station at Backbay. A 110 KV sub-station at Mankhurd was set up to provide power supply to the Metropolitan Railway Authority.

- The Tatas have dropped their plant to merge the three Tata Electric Companies-Tata power Company, Andhra Valley & Power Comp. & Tata Hydro Electric Power Supply Company.

1998

- The public communication group of Siemens has bagged the prestigious contract worth over one million DM from Tata Hydro Electric Power Supply Comp. Ltd, Mumbai, for supply of specialised telecommunication aerial optical fibre cable.

- The Supreme Court today directed the Mumbai high court to expeditiously conclude hearing a petition by Tata Hydro-electric Power Supply Comp. Ltd, seeking restraint on a LPG bottling unit near its Trombay electric station.

- The Tata Power Supply company, licencees for supply of electricity to Greater Mumbai, had, in its petition, contended that the site of the LPG bottling plant operating its 20,000 metric tonne storage terminal near the Trombay station was not only hazardous but also against public interest.

- The Thermal units at Trombay achieved a thermal generation of 7670 [MUss] as compared to 7593 MUs in the previous year.

- The Comp. entered into an Joint Venture Agreement with Total Gas and Power India [a wholly owned subsidiary of Totals] for establishment of an LNG Terminal at Trombay.

1999

- The Comp. jointly with Andhra Valley & Tata Power has entered into financial lease agreements for assets taken on lease, of which the company share of cost of assets aggregates Rs. 1616.32 lakhs [31st March, 1998 - Rs. 1616.32 lakhss].

- The Wage Agreement entered into by Comp. with the employees, expired on 31st December, 1997 & a fresh Agreement is under negotiation.

- Crisil & ICRA have both awarded the highest rating AAA & LAAA respectively for Debentures upto Rs. 500 crores. During the year the Companies issued Debentures aggregating to Rs. 150 crores on private placement basis.

- The Companies have acquired a generating station consisting of 37.5 MW Unit at Wadi, Karnataka, in January 1999.

- The Comp. has undertaken to give a sharper focus to growth and enhancement of shareholder value.

- The Companies also propose to establish a new joint venture with Total of France for storage & distribution of Liquified Natural Gas in the State.

- The Power Purchase Agreement for 81.3 MW Diesel-based Power Plant at Belgaum, Karnataka was signed with Karnataka Electricity Board. The necessary statutory approvals are being obtained to commence the plant erection work.

2000

- Mr. S. Mukherji has resigned as Director effective from August 1.