Alpana HPP www.energy.gov.ge Alpana HPP is located in Racha-Lechkhumi and Kvemo Svaneti region, Ambrolauri district, village Kveda Sairme on river Rioni. www.energy.gov.ge Installed Capacity - 70.6 MW Average Annual Generation – 356.82 GW/h Regulation Type – Run-off-the-river Capacity Usage Ratio – 57.7% www.energy.gov.ge Construction Cost – 105.9 million USD Construction Period – 3 years Domestic Tariff – 4.8 USc/kWh Export Tariff – 8 USc/kWh Project IRR – 16% Project NPV – 53 million USD Equity IRR – 24 % Equity NPV – 57 million USD Payback Period – 9 years Note: All the calculations are based on preliminary assumptions. Therefore any clarifications will cause appropriate changes in the final results. www.energy.gov.ge Site Location: - Racha-Lechkhumi and Kvemo Svaneti region, Ambrolauri district, village Kveda Sairme Name of the River: Rioni GPS Coordinates: X=324189 Y= 4713750 - HPP Type: Diversion, Run-off-the-river Site Description: Head unit, diversion pressure tunnel, surge tank, turbine conduit, power house, tailrace channel. Head unit conveys low crest spillway dam, height - 7.0m, which ensures maximum water discharge, reinforced concrete water intake and silt basin with sluice. Diversion is represented by 7.0m diameter, 8.3km long pressure tunnel. Reinforced concrete surge tank is located at the end of the diversion, diameter - 9.0m. Turbine conduit is 5.0m long metal faced tunnel. Power house dimensions 12.0x30.0m, height - 18.0m. Tailrace channel conveys three covered channels, which are reinforced concrete constructions, dimensions - 5.0x4.0m, length - 100m - each. www.energy.gov.ge Technical Parameters Installed Capacity Average Annual output Autumn-winter (Oct-March) generation Capacity usage ratio/Efficiency Type of regulation Scheme of energetic usage potential Hydrology Hydrological Data (number of years) Year of the average multi annual discharge Catchment area High water flow Average water flow Low water flow PMF (1%) Rated water discharge Maximum gross head Minimum gross head Reservoir Full supply level (FSL) Minimum Operation level (MOL) Total volume at FSL Active reservoir level Dam Type Crest Elevation MW GWh GWh % 70.6 356.82 105.94 57.7 Run-off-the-river Full Year Year km2 m3/sec m3/sec m3/sec m3/sec m3/sec m 58 1966 2521.00 110.00 90.1 72.1 1193.0 128.84 71.0 m 60.00 masl masl mln. m3 mln. m3 438 Unnecessary Unnecessary Unnecessary masl Low Crest 438 www.energy.gov.ge Spillway Type Crest Elevation Length of spillway crest Reservoir elevation during PMF Spillway capacity at reservoir level PMF Water intake Sill elevation Stop log type and number Quantity Sluice or bottom spillway Type and number Quantity Dimensions (w x h) or (d) Diversion Type of diversion Dimensions (w; l) or (d; l) Stilling basin or shaft Dimensions (w x l) or (d ) Powerhouse Type Dimensions (w x h x l) Elevation of tailrace outlet sill Tailrace Type Dimensions (w x h) Elevation of outlet sill masl m masl m3/sec masl Surface 431.0 45.0 439.5 1193.0 unit 434.0 Flat surface 4 unit m Bottom 3 3.0x2.0 m Tunnel 7,0; 8300 m 9.0 m masl Above-ground 12x18x30 370.20 m masl Covered channel 5x4 364.70 www.energy.gov.ge Turbines/Generators Turbine Type and number Rated discharge Rated output Maximum output Generator Type Generator nominal output Generator nominal output Transformers Type Number Nominal power Transformer dimensions (l x w x h) Seismic background of the construction site Richter scale MW rpm F. HL 160-LJ-300; 3 42.95 24.4 27.1 SF 25-18/4250 24.54 333 unit MVA m Three-phase 3 26.1 5,8x3,5x5,3 Magnitude 6.9 m3/sec MW MW Economic - Financial Parameters Costing Duration of the construction Investment per 1 kV Investment per 1 kV/h Revenue per USD spent (Average price new HPP - 4,8 cents) Estimated carbon credit generation mln. USD Year Thousand USD USD USD T. 105.9 3.00 1.50 0.30 0.18 124.9 Social and Environmental Parameters Special environmental requirements Social Impact Additional workplace; Development of infrastructure Ecological risks Low Transmission lines Parameters Distance to inter connection point Infrastructure Existing roads Roads to be constructed kV km 110 0.70 km Paved 0.50 www.energy.gov.ge Number of observed years - 58 Chosen year - 1966 www.energy.gov.ge www.energy.gov.ge www.energy.gov.ge www.energy.gov.ge www.energy.gov.ge www.energy.gov.ge
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