VER Monitoring Report Version I VCS Standard

Transcription

1 VER Monitoring Report Version I VCS Standard Date: 31 st March 2008 Monitoring Period: 31 st October 2006 to 24 th March 2008 (Inclusive of both days) Project Site Rithwik Power Projects Limited Tekulapally, Penuballi Mandal Khammam District Andhra Pradesh Telephone: Fax: Corporate Office Rithwik Power Projects Limited Velcan Renewable Energy Pvt. Ltd 19/1, Vittal Mallya Road Bangalore Phone: Fax:

2 CONTENT 1 CURRENT STATUS OF THE PROJECT EXECUTIVE SUMMARY OF THE VER MONITORING AND VERIFICATION PROCESS SUSTAINABILITY: SOCIAL, ECONOMIC AND ENVIRONMENTAL EFFECTS MONITORING PERIOD MONITORED PARAMETERS ACCORDING TO THE MONITORING PLAN VER CALCULATION EMISSION REDUCTION CO 2 EMISSIONS FROM ON-SITE FUEL CONSUMPTION OF COAL FOR CO-FIRING EMISSIONS DUE TO ELECTRICITY IMPORTS FROM GRID EMISSION REDUCTION CALCULATIONS FUEL CONSUMPTION POWER GENERATION, EXPORT, AND IMPORT EMISSION REDUCTIONS MONITORING OF SURPLUS BIOMASS SPECIFIC CONSUMPTION OF FUEL SUMMARY OF EMISSION REDUCTIONS MEASURES TO ENSURE THE RESULTS / UNCERTAINTY ANALYSIS UNCERTAINTY LEVEL CALIBRATION PROCEDURES ACCURACY LEVELS ROLES AND RESPONSIBILITIES CDM TEAM MEMBERS ANNEX I: EXAMPLE OF DAILY MONITORING REPORT

3 1 CURRENT STATUS OF THE PROJECT Rithwik Power Projects Limited (RPPL) is a 6 MW biomass based power plant at Tekulapally Village, Penuballi Mandal, Khammam District, Andhra Pradesh, India. The plant was commissioned and is in operation since 22 nd November The project has been completed with major equipments supplied as follows: Sl No. Equipment Supplier 1 Boiler Thermax Babcock and Wilcox Limited 2 T.G. Set Siemens 3 Balance of Plant Shriram EPC Limited 4 Fuel Handling System Hyquip Projects Pvt Ltd 5 R O Plant Doshion exchange and chemical industries ltd 6 Cooling Treatment Plant Shriram towertech Ltd 7 ESP Andrew Yule and Company Limited First synchronization of the project with 133/32 KV sub station at Penuballi (AP TRANSCO grid) was performed on 22 nd November 2002 after trial operations and obtaining permission for commercial operations. The project was taken over by Velcan Renewable Energy Pvt. Ltd. (VREI) on 31 st October Thus the monitoring period is from October 31 st 2006 to March 24 th The plant uses biomass fuels like wood residues, rice husk, cotton stalk, maize waste, bagasse and other biomass fuels such as coconut waste, sawdust, groundnut shells, palm oil brunches, and redgram stalk. Coal was used though lesser than the permitted quantity. Since December 2006, no coal has been used for co-firing. 2

4 2 Executive Summary of the VER Monitoring and Verification Process The monitoring and verification for Verified Emission Reduction (VERs) is for the period 31 st October 2006 to 24 th March During this period, electricity generated using biomass was supplied to the grid thus substituting the fossil fuels dominated by conventional energy. The VER calculation is prepared in accordance to the Monitoring Plan given in the PDD. Based on the monitoring methodology, the project emissions from usage of coal for co-firing and import of electricity from the grid are considered. Plant has exported 50,080,100 kwh to APTRANSCO grid and has consumed almost 94,047 t of biomass and 3070 t of coal from 31 st October 2006 to 24 th March As per the PDD calculation, emission reduction for 31 st October 2006 to 24 th March 2008 is 37,479 tco 2 e. 3

5 3 Sustainability: Social, economic and environmental effects a. Social well being: The project activity is leading to alleviation of poverty by establishing direct and indirect employment benefits. During normal operation, almost 120 persons are working on the site of RPPL from which 60 are people with low or no qualification. The huge quantity of biomass required by RPPL, also provides employment for transportation and handling from the fields or mills to the power plant. Finally, the biomass power generation is also providing ample indirect opportunities for employment in manufacture, installation and maintenance operations linked to the project activity. Thereby, since its commissioning date, the power plant has been contributing to support the employment in the local area. On a wider scale, the plant has also contributed to the improvement of the infrastructure in and around the plant area. This includes improvement of electricity quality, frequency and availability as the electricity is fed into a deficit grid. b. Economic well being: Biomass resource is the first expenditure of the plant activity (60% of the turn-over is dedicated to biomass procurement). The procurement of the raw material has generated a great surplus of resources to the farmers around. Before RPPL commissioning, agri-residues were valorised at quite low rates or even, burnt on open fields. During normal operation, Rithwik power plant is injecting into the local area around Rs. 6 crores per year (around 1.2 million $) in raw material procurement. This amount corresponds to extra-activity for the local activity since without the plant the raw material will have no or low value. Secondly, the generated electricity is currently fed into the Southern region grid of India through local grid, improving consequently the grid frequency and availability of electricity to the local urban and rural habitants. These improvements contribute to the reduction of power shortage and so, support the economical growth of the area. The collection and handling of crop residues to the plant is generating additional revenue for the farmers and mills operators. In other words, the plant is generating commercial value to crop residues enabling the farmers to get a better price for their produce augmenting their income. This also prevents the migration of the rural people toward cities by creating 4

6 employment opportunities. The plant has also created business opportunities for local stakeholders such as bankers, consultants, suppliers, manufacturers, contractors etc. c - Environmental well being : The electricity generated does not lead to GHG net emissions. In fact, biomass combustion and growth and associated CO 2 consumption and release can be treated as a cyclic process resulting in no net increase of CO 2 in the atmosphere. This 0- carbon content power fed into the grid contributes to the decrease of the conventionally fossil fuel based power generation of the grid. Moreover, the use of biomass instead of coal for power generation results in reduction in the emission of sulphur oxides and other pollutants, thereby improving local environmental conditions. RPPL power plant has commissioned all the required equipment for pollution mitigation such as Electrostatic precipitator for ash collection, water treatment plant and green cover around the site. 5

7 4 Monitoring Period The monitoring period is from 31 st October 2006 to 24 th March 2008 (inclusive of both days). The 24 th of every month is the meter reading day for RPPL. 6

8 5 Monitored Parameters according to the Monitoring Plan According to the PDD the following parameters are being recorded. i. Baseline Emission Factor: The baseline emission factor has been determined ex-ante and the baseline emission factor is tco 2 /MhW. ii. Power Export and Import: Power exported to the grid and imported from the grid is monitored every month from energy meters installed at APTRANSCO sub station. A joint meter reading for the energy exported and imported to the Grid is recorded by representatives of APTRANSCO and RPPL and the readings are jointly signed by both the parties. These meter readings are the basis for the invoices raised by RPPL and constitutes the main evidence for energy export and import. iii. Coal consumption: The coal in receipt in the plant was consumed though lesser than that prescribed by the NEDCAP. The coal procured from Singareni Collieries Company Limited (SCCL) during the month of November has been considered as coal consumed. iv. Biomass Consumption:. Since December 2006, weekly consolidated statement is being prepared for biomass procurement and consumption and sent to H.O. for verification and comments if any, as shown in Annex I. The consumption of fuels during operation is arrived by using the matter balance method which is more accurate and auditable. Consumption = Initial stock + delivery final stock v. Biomass Calorific value: Average GCV is frequently measured on site with a bomb calorimeter. The measurement of GCV is used to check the quality of the fuel and to estimate the Plant Heat Rate of the unit. 7

9 vi. Calorific value of coal: The highest GCV value for the coal grade given by Ministry of Coal (source: has been converted to NCV using 0.95 conversion rate based on IPCC good practice guidance 1. The gross calorific value considered for the coal grade is as follows: Grade GCV (Kcal/ NCV (Kcal/ Kg) Kg) (GCV * 0.95) C D E F G Source: This method is conservative due to the following reasons: o The high end value of GCV for the coal grade supplied is considered o The NCV calculations are conservative as the moisture content is considered as just 5%. 1 / Page 4 / Page 25 / page15.html / Page 3 8

10 6 VER Calculation 6.1 Emission reduction According to the Project Design Document, the emission reductions produced by the project activity are calculated as following: Where: ER = EG EF elec, y y ER elec,y is the emission reductions due to displacement of electricity during the year y in tonnes of CO 2 EG y is the net electricity supplied through APTRANSCO to southern grid EF y is the emission factor in current generation mix for the electricity displaced due to the project activity during the year y in tones CO 2 /MWh = 0.86 CO 2 /MWh y 6.2 CO 2 emissions from on-site fuel consumption of coal for co-firing GHG emissions occurring within the project boundary due to on-site burning of coal for co-firing is calculated using the following formula: Coal y = Q NCV coali y i EF, CO2, i i E OXID Where: E coaly are the emissions due to coal burning from the project activity during the year y in tons of CO 2 Q coali,y is the quantity of coal of batch i combusted during the year y to sustain the combustion of the biomass residues in the boiler during the year in tons NCV i is the net calorific value of the coal of batch i in TJ per ton EFCO 2i is the CO 2 emission factor per unit of energy of the coal of type i in tons of CO 2 per TJ (95.81 as per India s First National Communication to the UNFCCC 2 ) OXID i is the oxidation factor of the coal (1 oxidation factor is included within the standard factor given by IPCC guidelines) i 6.3 Emissions due to electricity imports from grid During failure of the home load, there are imports of electricity from the grid. The emissions due to import were determined based on the monthly imports shown by the meter at the substation. The amount of electricity imported was multiplied by the grid factor (0.86 tco 2 /MWh) to determine project emissions due to import of electricity from grid

11 6.4 Emission Reduction Calculations Finally the VER generation is calculated as following: VER y = ERelec, y E coal y Where: VER y is the emissions reduction of the project activity during the year y in tonnes of CO 2, ER elec,y is the emission reductions due to displacement of electricity during the year y in tonnes of CO 2, E coal,y is the emission arising out of combustion of fossil fuel (Coal) due to co-firing during the year y 10

12 7 Fuel Consumption 11

13 8 Power Generation, Export, and Import 12

14 9 Emission Reductions 13

15 10 Monitoring of surplus biomass As per the guidelines of the UNFCCC (EB 28), surplus of biomass availability should be at least 25% in a radius of 50 km around the project activity in order to neglect the leakage due to biomass competition. The percentage of excess of biomass was calculated as following: Biomass available % Excess of Biomass = ( 1) 100 Biomass used (power plants including project activity) To show that there is no competing use of biomass the project participant needs to evaluate if there is a surplus of the biomass in the region of the project activity, which is not utilized. If it is demonstrated that the quantity of available biomass in the region, is at least 25% larger than the quantity of biomass that is utilized including the project activity, then this source of leakage can be neglected otherwise this leakage shall be estimated and deducted from the emission reductions. Based on a systematic study conducted by Indian Institute of Science, which involved mapping of surplus biomass for energy generation, it can be seen that from surplus crop residue biomass available in Khammam district, 41.5 MW power can be generated. Currently only 29 MWe of power is being generated from biomass plants in the district. Thus the availability of surplus biomass is far more than the utility for power production. A detailed calculation of the percentage of excess of biomass is enclosed (renewability.xls). Thus, no leakage due to competitive use of biomass residue needs to be considered. 14

16 11 Specific consumption of fuel According to AMS I.D, Version 12, EB 33, the projects consuming biomass, a specific fuel consumption of each type of fuel to be used should be specified ex-ante. The consumption of each type fuel shall be monitored. The amount of electricity generated calculated using specific consumption of fuel and amount of each type of biomass used shall be compared to the amount of electricity generated on-site. The lower of two values should be considered to calculate emission reductions. The electricity generation using specific fuel consumption and the amount of biomass fuel is as follows: Rice husk Wood waste Agricultural waste Total Specific Consumption of fuel (t/mwh) Biomass Consumption 44,325 31,946 17,775 94,047 Total Electricity generation (KWh) 29,014,721 20,190,325 8,626,407 57,831,453 Total electricity generated as per the energy meter (KWh) 57,521,250 The electricity generated as per the meter is 57,521,250 KWh. Since this is lower than that calculated based on the specific fuel consumption, the same is considered for emission reduction calculations. 15

17 12 Summary of Emission Reductions Particulars Period (October 31 st th March 2008) CEF (tco 2 /MWh) Power export to the grid (KWh) 50,080,100 Baseline emissions (tco 2 ) 43,056 Project emissions* (tco 2 ) 5,577 Net emission reductions (tco 2 ) 37,479 *emissions due to import of electricity 16

18 11 Measures to ensure the results / uncertainty analysis 11.1 Uncertainty level The main parameters for calculation of emission reductions are the electricity exported to the grid, imports from the grid and the consumption of coal. The electricity exported to the grid and imported from the grid is recorded from the two independent energy meters viz: main meter and check meter, which is used for billing. In the event of main meter not in operation / fails, the reading of the check meter is used for billing. The uncertainty levels for these parameters are very low, as energy meter is calibrated yearly once as per the norms and regulations of APTRANSCO. The generation and export meter in the control room have also been calibrated and hence the uncertainty levels are low. The weigh bridge is also calibrated yearly once. Thus the estimation of biomass consumed also have high accuracy and low uncertainty levels. The total coal purchased during the crediting period is considered for project emissions. As it is a commercial transaction verified by both parties (SSC and RPPL), the uncertainty level is very low and the emissions reductions are conservative Calibration Procedures The calibration of energy meter at the substation is performed as per the requirement of APTRANSCO and the same is being done regularly on yearly basis. The calibration of equipments ensures minimum error within permissible limits. The tri-vector energy meter was calibrated by Electronics Test and Development Centre, Hyderabad, during the verification period which is a Government of India agency and is an accredited laboratory under national accreditation board for test and calibration laboratories. The weigh bridge is calibrated by the Office of the Controller of Legal Metrology, Government of Andhra Pradesh Accuracy levels The main meter was tested to be Good and with in the permissible ±0.02% accuracy. The measurement uncertainty estimations were carried out at 95% confidence level for a coverage factor of K=1.96 as per the national standards. Thus emission reduction estimation has high accuracy. 17

19 12 Roles and Responsibilities A CDM team has been formed within the RPPL for monitoring and verification of all the monitoring parameters as per the guidelines formulated in the Project Design Document. Qualified and trained people monitor the parameters and emission reduction calculations. In the complete implementation and monitoring Plan, RPPL is the sole agency responsible for implementation and monitoring CDM team members 1. Mr. Seshagiri Rao, General Manager 2. Mr.Ramakrishna, Accountant in charge 3. Dr. Sudha Padmanabha, CDM In-Charge 4. Mr. Jean Baptiste Curien, Staff Engineer 18

20 13 ANNEX I: Example of Daily Monitoring Report DAILY REPORT Date: 07/12/2006 A. POWER GENERATION DETAILS (units) GENRATED UNITS EXPORTED UNITS IMPORT UNITS HOME LOAD PARTICULARS Shift A Shift B Shift C Shift A Shift B Shift C Shift A Shift B Shift C Shift A Shift B Shift C FOR THE DAY PER SHIFT FOR THE DAY TOTAL Average power generated (gross) : 1.96 MW PLF (%) 7,5MW basis 26% GENRATED UNITS EXPORTED UNITS IMPORT UNITS HOME LOAD CUMULATIVE B. TECHNICAL COMMENTS CONCERNING THE DAY Plant stopped due to Economiser tube leakage at bottom header(tube No.9 from left to right of inside) C. FUEL SITUATION : (QUANTITY IN MTS) PARTICULARS RICE HUSK PALM OIL COCONUT WOOD REAPER COTTON STALK GROUNDNUT SHELL TABACCO BAGASSE COMB 1 COMB 2 COMB 3 TOTAL OPENING STOCK DELIVERY CONSUMPTION CLOSING STOCK D. FUEL DELIVERY : (QUANTITY IN MTS) PARTICULARS RICE HUSK PALM OIL COCONUT WOOD REAPER COTTON STALK GROUNDNUT SHELL TABACCO BAGASSE COMB 1 COMB 2 COMB 3 TOTAL QUANTITY AVERAGE PRICE AMOUNT PAID