Solar Resource Mapping in Pakistan SITE EVALUATION REPORT July 2015 This report was prepared by the consultants listed on the following pages, under contract to The World Bank. It is one of several outputs from the solar Resource Mapping and Geospatial Planning Pakistan [Project ID: P146140]. This activity is funded and supported by the Energy Sector Management Assistance Program (ESMAP), a multi-donor trust fund administered by The World Bank, under a global initiative on Renewable Energy Resource Mapping. Further details on the initiative can be obtained from the ESMAP website. This document is an interim output from the above-mentioned project. Users are strongly advised to exercise caution when utilizing the information and data contained, as this has not been subject to full peer review. The final, validated, peer reviewed output from this project will be the Pakistan Solar Atlas, which will be published once the project is completed. 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ESMAP – Renewable Energy Resource Mapping Initiative - Solar Resource Mapping for Pakistan – Site evaluation report: Quaid-e-Azam Solar Park, Bahawalpur Responsible Authors Birk Kraas (CSP Services) Christoph Schillings (DLR) Qazi Sabir (PITCO) DOC: SiteEvalReport_QASP_2014-06 Author Contact Information: CSP Services GmbH Friedrich-Ebert-Ufer 30 51143 Köln/Cologne, Germany e-mail: b.kraas@cspservices.de 02 July 2014 CSP Services GmbH Birk Kraas Friedrich-Ebert-Ufer 30 51143 Cologne, Germany Phone: +49 2203 959003 6 Mob.: +49 162 9373484 b.kraas@cspservices.de DLR Dr. Christoph Schillings Pfaffenwaldring 38-40 70563 Stuttgart, Germany Phone: +49 711 6862 784 christoph.schillings@dlr.de PITCO: Qazi Sabir Phone: +92 (42) 36363751 qazi.sabir@pitcopk.com – ESMAP Pakistan – confidential - 2 SiteEvalReport_QASP_2014-06 Contents 1 Executive Summary.............................................................................. 4 2 Procedure and tasks of the site visit .................................................... 5 3 Site visit results ................................................................................... 6 3.1 Overview, description of the site and surroundings ................................. 6 3.2 Local support, maintenance staff and future hardware use ....................... 7 3.3 Site evaluation .................................................................................. 8 Coordinates ................................................................................. 8 Checklist for evaluation of the situation of and at the site ................... 8 Shadings and Reflections ............................................................. 11 4 Conclusion ......................................................................................... 15 – ESMAP Pakistan – confidential - 3 SiteEvalReport_QASP_2014-06 1 Executive Summary A team of AEDB (Alternative Energy Development Board of Pakistan), WBG (World Bank Group) and the solar vendor consortium for the ESMAP Pakistan Solar Resource Mapping Project visited the Quaid-e-Azam Solar Park (under construction) near Bahawalpur on June 05, 2014. The goal was to evaluate if the location is suitable for the installation of a solar ground measurement station in the framework of the project. The site that has been examined is on the rooftop of the main Quaid-e-Azam Solar Park office building, which was still under construction at the time of the visit. The site is recommended for the installation of a Tier 1 or 2 meteorological station (CSP Services MHP/MDI automatic weather station). Shading of sensors is negligible, physical conditions for installation are comfortable and maintenance personnel is available among the Solar Park staff. The local stakeholder expressed his interest and willingness to facilitate a meteorological station at his premises. – ESMAP Pakistan – confidential - 4 SiteEvalReport_QASP_2014-06 2 Procedure and tasks of the site visit The following tasks have been performed for the site visit, following the procedure from the site visit manual: 1. Recording of exact geographic coordinates of the site(s) and orientations 2. Photographic documentation of the site - Overview of site and location, - panoramic 360 degrees round view from the site for identification of potential obstacles blocking the sun path 3. Check of availability, strength and potential providers of GSM network at the site 4. Audit of local staff to clarify all relevant information (see checklist) 5. Information of local staff at the site about the project, its aim and required tasks for realization and clarification of availability and prospected quality of the required support from their side 6. In-office evaluation of results and compilation of this report – ESMAP Pakistan – confidential - 5 SiteEvalReport_QASP_2014-06 3 Site visit results The results of the site visit and its evaluation is presented in the following section. 3.1 Overview, description of the site and surroundings Figure 1: Location overview (Google Maps View) Figure 2: Aerial View (Google Earth View) Quaid-e-Azam Solar Park is located in the southeast of the city of Bahawalpur. The whole area is sparsely vegetated and dry, situated on the western border of Thar desert. In the surrounding areas, agricultural terrain with artificial irrigation is expanding, beginning in a distance of about 5 km. The terrain is entirely flat. – ESMAP Pakistan – confidential - 6 SiteEvalReport_QASP_2014-06 At Quaid-e-Azam solar park, solar power projects will be implemented with up to 20x50 MW of capacity. The first 100 MW of photovoltaic installation is under construction. According to local stakeholder representatives, construction of this project shall be terminated by the end of 2014. 3.2 Local support, maintenance staff and future hardware use The availability of qualified staff for the regular local maintenance (cleaning of sensors and other parts, visual inspection, surveillance of equipment) and the institutional support of the involved stakeholder are directly relevant for the success of the ESMAP project measurement campaign. Future use of the equipment after the ESMAP project termination is another issue to be considered in order to provide maximum sustainability of the project. Local support and maintenance staff Local staff is available from the solar park operator company, Punjab Industrial Estates Development and Management Company. Representatives confirmed to be willing to perform maintenance tasks throughout the 24 months of the measurement campaign. A short briefing about the required tasks and their frequency of occurrence has been given to the company representatives. Qualification of local staff should be sufficient for station maintenance since engineers and educated staff will be present at the site. The company also stated to provide the site preparation (civil works) free of cost. Future hardware use (sustainability) At QA Solar Park, the station will immediately provide added value to the local development company. Reliable measurements can help securing finance for the planned solar power projects, they can further help in selecting the best technology, in engineering of the power plants and in surveillance of existing solar power installations. Therefore, future hardware use can be taken as granted. Contact Information The local contact for the site is  Engr. Aamir Taufique Project Director, Punjab Industrial Estates Development and Management Company Tel: +92-322-4004333 email: aamir.taufique@yahoo.com – ESMAP Pakistan – confidential - 7 SiteEvalReport_QASP_2014-06 3.3 Site evaluation Coordinates N 29.3253° E 71.8187°, altitude 120 m above mean sea level The site is located on the roof top of the QA Solar Park central office (under construction). Figure 3: View from Site to the North Figure 4: View from Site to the South Checklist for evaluation of the situation of and at the site The following checklist has been filled at the site visit and is completed by interviewing stakeholders (QA Solar Park staff) on site. Table 1: Site checklist for site 1 Criteria/Measure Yes / No Notes Dimensionsi Minimum area 10 × 10 m² yes Firm natural groundii no Surface Ground typeiii paved Horizontally levellediv yes – ESMAP Pakistan – confidential - 8 SiteEvalReport_QASP_2014-06 Not necessary, Excavation for foundations drilling/casting is possiblev possible Fencing of the site possiblevi Not necessary No drifting sand/snowvii no No flooding possibleviii no Obstructions See Panoramic View Figure 5 If yes, note direction, distance and approx. heightix Reflections or light sourcesx no Industrial areas or power yes Solar Park plantsxi construction site Sources of smoke or vaporxii no Quarry or minexiii no yes Dirt roads, shall Main road, dirt road, trackxiv be asphalted no Large distance, Surroundings Airportsxv ~15 km Settlements, towns, cityxvi no ~10 km from site Agricultural areaxvii no ~10 km from site Swamp, lake, river, oceanxviii no Sand dunesxix yes Animal populationsxx no Occurrence of snowfallxxi no Temperatures below freezing no pointxxii Otherxxiii - Accessibility Accessible by carxxiv yes GSM coverage 2G network availablexxv yes All 5 providers Grid power Electricity availablexxvi yes Land use rights Permit availablexxvii yes Operation permit Permit availablexxviii yes – ESMAP Pakistan – confidential - 9 SiteEvalReport_QASP_2014-06 No underground or overhead no electrical lines, pipelines or Security similar xxix Measures against theft or No Security service vandalism required?xxx guards the site Regarding the aspects covered by the checklist, the site is well suited for the installation of a ground measurement station. The installation on the rooftop is a good option since it will be less affected by construction on the site and it is close to the maintenance staff; safety of the equipment against human or animal influences is given on the guarded site. The surroundings lack any large industrial facility thus no negative impacts on irradiation and measurement conditions is stated. All roads in the surroundings will be asphalted and then not heavily dust-emitting; large water bodies and irrigation canals are at least several kilometres distant. Permission to use the site can be given directly by the resident stakeholder. The current construction will likely emit certain quantities of dust and aerosols, but will only affect the first 2-3 months of measurement. Further solar power projects construction may occur within the next two years, but the emissions should be tolerable. – ESMAP Pakistan – confidential - 10 SiteEvalReport_QASP_2014-06 Shadings and Reflections Panoramic View The picture in Figure 5 shows a panoramic view with a centered south view, North is on the left and right edge of the picture. Blue markers show the North, South, East and West direction as well as horizon height. The sun paths throughout the year are displayed in the picture, revealing if any objects on the horizon are imposing an obstruction to the direct solar irradiance. Figure 5: Panoramic View with North, South, horizon line and monthly sun paths with the corresponding position at full hours marked From the panoramic view, it is visible that even at low sun angles around sun rise and sunset, no remarkable obstacles on the horizon are blocking the sun except for a few items such as a power line mast and water tank in the northeast. Shading Table for Sun Elevations >0° Figure 6: Shading Table for Sun Elevations >0° – ESMAP Pakistan – confidential - 11 SiteEvalReport_QASP_2014-06 Figure 6 shows the shading table throughout the year. It becomes clear that throughout the year, there is practically no shading except for some short periods at sunrise in the months of March-May and August-September. Shading Table for Sun Elevations >5° Figure 7: Shading Table for Sun Elevations >5° Figure 7 shows the shading table after excluding Sun Elevations smaller than 5° above horizon. At these low angles, measurement uncertainty of satellite and ground measurement is elevated due to the large cosine error, and the data from these periods is therefore excluded from the satellite data adjustment and validation. Also from the view of any solar power installation (PV or CSP), sun elevation smaller than 5° is usually not contributing to electricity or heat generation due to shading, unfavorable incidence angles and low irradiance intensity. Subsequently, all further graphs and evaluations refer to sun elevations larger than 5°, as the main aim of the measurements on ground is the adjustment of the long-term satellite data. From the graph, it is visible that shading at sun elevations above 5° is not present. – ESMAP Pakistan – confidential - 12 SiteEvalReport_QASP_2014-06 Direct Shading Impact Figure 8 shows the impact of shading on direct normal irradiation (DNI). DNI is modeled according to Bird (Bird et al., 1991) as a theoretical clear-sky DNI throughout the year and can be interpreted as the maximum solar resource. The impact of shading on this figure is therefore the maximum quantitative impact shading could have on solar resource. Figure 8: Shading Impact on BirdDNI for Sun Elevations >5° Obviously, there is no impact of shading when restricting the evaluation to sun evaluations above 5° as there is no shading present. Figure 9: Shading Impact for Sun Elevations >5° Figure 9 shows the impact of direct shading due to the reported obstructions. The left figure shows the percentage of time for all calendar months which is affected by – ESMAP Pakistan – confidential - 13 SiteEvalReport_QASP_2014-06 direct shading. The right figure shows the quantitative impact of shading on the Bird- DNI summarized for each month. Consequently, the shading-affected time and the BirdDNI reduction is zero. Diffuse Shading and Reflections No shading of diffuse radiation contributions and no reflections or artificial light sources are influencing the potentially installed sensors. Potential future solar power installations such as PV panels or mirror-bearing collectors will be below the sensor level and can therefore not reflect any irradiation towards the sensor. – ESMAP Pakistan – confidential - 14 SiteEvalReport_QASP_2014-06 4 Conclusion The surroundings of the location are suitable for the installation of a ground measurement station. No significant external influence from surrounding facilities on the overall meteorological and atmospherical conditions could be stated during the site visit except for the fact that the site will be subject to major construction works over the coming years. The local stakeholder confirmed his support and smooth operation and proper maintenance of the station is expected with high probability. Future use of the equipment after the two years measurement by the local stakeholder is taken as granted due to the expected benefit of a solar radiation measurement station on a solar power park. Shading effects are virtually negligible, since no shadings occur in the relevant sun elevations which will be used for the comparison of ground and satellite data. The roof allows for easy casting of foundations or drilling for bolts. The site is therefore recommended for the installation of a Tier 1 or 2 meteorological station. – ESMAP Pakistan – confidential - 15 SiteEvalReport_QASP_2014-06 Detailed description of checklist criteria: i A site with a minimum extension of 10 × 10 m² is required for the collocation of the meteorological measurement equipment, complying with the characteristics and criteria listed in the following. ii The site suitable for collocation of a meteorological station needs to have a firm ground in order to enable a secure fixation of the equipment on the ground, e.g. by ground anchors and guying ropes. iii Annotate here if the ground consists of firm and naturally grown soil or artificially (by man) filled soil, if it consists of bedrock, firm soil, loose soil or sand. iv Annotate here if the site is approximately horizontally levelled and flat. v Annotate here if it is possible and permitted to lay small foundations (4-5 foundations each approximately 1 × 1 m² and ~0.3 m deep). vi Annotate here if it is possible and permitted to fence the compound. vii Annotate here the terrain consists of drifting sand or snow. viii Annotate here if the terrain may run the risk to be flooded at heavy rain falls. ix Describe any object which exceeds 2 m height in the closer environment of the site and which might shade the measurement equipment on the site from direct sun at any time of the year or which obstructs parts of the sky dome. Describe in detail at least all such objects within 30 m distance as well as bigger objects up to at least 200 m distance from the site. As the sun at sun rise and sun set approaches the horizon in East and West direction (~±30 degrees depending on season), obstructions in these directions are of particular importance. Add sketches of the site environments where possible. Possible obstructing objects are: mountains, hills, buildings, skyscrapers, houses, industrial or commercial buildings, warehouses, churches/mosques or similar buildings (for religious or cultural activities), walls, bridges, towers, chimneys, wind energy plants, transmission masts, power poles, other poles or rods, cranes, street lights, greenhouses, trees, bushes, shrubberies, any other higher vegetation, or similar. Moreover, the view from the site towards the horizon should be documented by 360° photographs (see corresponding description) or a short movie taken from the site, starting in direction to the North over East, South, and West to North direction again. x Annotate if any reflecting surfaces like mirrors, glazing, shiny metal surfaces, PV panels, etc., or artificial light sources are in the environments and might cause reflections or radiation on the measurement equipment, influencing irradiation measurements. xi Annotate if any industrial production site or power plant is located in the environments of a few kilometers, which may cause emissions of smoke, vapor, dust or other aerosols. xii Annotate any source of smoke or water vapor columns located in the environments. xiii Annotate quarries or mines in the environments causing pollution by elevated dust. – ESMAP Pakistan – confidential - 16 SiteEvalReport_QASP_2014-06 xiv Annotate close by roads as they frequently cause increased sensor soiling by elevated dust settling down on the sensors, or increase the risk for theft or vandalism due to increased visibility. xv Annotate the presence of airports in the environments as exhaust gases of planes may influence the measurements. xvi Annotate the presence and size of settlements in the environments in order to judge potential influences on the measurements (personally or as secondary effects like smoke or dust) by man. xvii Annotate type and frequency (if possible) of agricultural activities in the environments in order to judge potential impacts on the measurements (e.g. elevated dust, etc.). xviii Annotate their potential presence in the environments in order to judge impacts on the measurements due to increased humidity, oxidation of the equipment, instability of the ground, etc. xix Annotate the presence of sand dunes in the proximities of some kilometers in order to judge potential deposition of sand on the equipment. xx Annotate if any animal population frequents the area which might have any impact on the measurements. Also take into account birds, termites, insects (bees, wasps, etc.), etc. xxi Annotate the occurrence and the frequency (if possible, may be estimated) of days with snowfall or remaining snow cover in order to design the power supply and version of the irradiation sensor(s). xxii Annotate the occurrence and the frequency (if possible, may be estimated) of days with temperatures below freezing point temperature (zero degrees Celsius) in order to design the equipment and judge potential impacts on the measurements. xxiii Annotate any other observations, occurrences or presences which you may estimate them causing potential impacts on the measurements. In the case of doubt about an influence, please annotate the observation. xxiv Annotate if the site is easily reachable by car in order to facilitate the transport of the equipment to the site. xxv Verify with your mobile phone or contacting a reliable local mobile phone network provider the availability of 2G network from different providers. If only 3G network (or higher) is available, verify with the network provider if GPRS connection in 2G mode is enabled. Check with your mobile phone by switching it manually to 2G connection only and test data connectivity via GPRS or EDGE. xxvi Annotate if electricity grid is available at the site for power supply. If information is available, annotate the voltage level and if grid stability issues are known for the site. xxvii Verify and annotate if the land use permits are conceded or given from the land owner. xxviii Verify and annotate if the permits to use the compound for operation of a meteorological station are conceded or given by law and local authorities. xxix Verify and annotate if no high voltage lines (exceeding 20 V) are crossing the compound neither as overhead line nor in the ground. Verify and annotate if no gas, water, remote heat or other pipeline are crossing the compound above or in the ground. – ESMAP Pakistan – confidential - 17 SiteEvalReport_QASP_2014-06 xxx Estimate the risk of theft or vandalism on the measurement equipment. Give an estimation of a safety guard or similar is required to watch the equipment. – ESMAP Pakistan – confidential - 18 SiteEvalReport_QASP_2014-06