Solar Resource Mapping in Pakistan SITE EVALUATION REPOR.7.,)$+ %+ 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: Tando Jam Pakistan Meteorological Department Responsible Authors Birk Kraas (CSP Services) Christoph Schillings (DLR) Qazi Sabir (PITCO) DOC: SiteEvalReport_TandPMD_2014-08 Author Contact Information: CSP Services GmbH Friedrich-Ebert-Ufer 30 51143 Köln/Cologne, Germany e-mail: b.kraas@cspservices.de 21 August 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_TandPMD_2014-08 Contents 1 Executive Summary.............................................................................. 4 2 Procedure and tasks of the site visit .................................................... 4 3 Site visit results ................................................................................... 5 3.1 Overview, description of the site and surroundings ................................. 5 3.2 Local support, maintenance staff and future hardware use ....................... 6 3.3 Site 1 (roof top) ................................................................................. 7 Coordinates ................................................................................. 7 Checklist for evaluation of the situation of and at the site ................... 7 Shadings and Reflections ............................................................... 9 4 Conclusion ......................................................................................... 13 – ESMAP Pakistan – confidential - 3 SiteEvalReport_TandPMD_2014-08 1 Executive Summary A team of the solar vendor consortium for the ESMAP Pakistan Solar Resource Mapping Project visited the Pakistan Meteorological Department (PMD) AgroMet office on the campus of Sindh Agriculture University on August 08, 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. One site on the office rooftop has been examined. 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 - 4 SiteEvalReport_TandPMD_2014-08 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) The PMD AgroMet office on the campus of Sindh Agriculture University is located on the eastern border of the campus. To the east and south, there is open, irrigated agricultural area regularly crossed by irrigation canals. The first of these are located in a distance of 1.5 and 3 km. The campus and the town of Tando Jam are located to the north and west of the site.. – ESMAP Pakistan – confidential - 5 SiteEvalReport_TandPMD_2014-08 Tando Jam is located 12 km to the east of Hyderabad, just a few kilometres into the irrigated area of the Indus valley. Hyderabad is located on the Indus river directly north of the junction of the Indus with Baran river which comes from the west, from the Khirtar mountain range which commence about 30 km west of the city. To the east lies the vast Indus valley with its large irrigated agricultural areas. 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 and 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 PMD representatives. Qualification of local staff for the task is assumed to be given, since PMD is the official department of meteorology with corresponding staff and there is already meteorological equipment present and operating under their control. The data from this instrumentation could potentially be an extra input for cross-check of the ground measurement data within the ESMAP campaign. Future hardware use (sustainability) The meteorological station from the ESMAP project would be a good complementary station to the existing PMD meteorological station. The station would likely be used actively in future for the national measurement network of PMD and the value added therefore be increased. Contact Information The local contact for the site is  Mr. Ahsaan Regional Agromet Centre, Tandojam +92 333 3032961  Khalid Kazi Meteorologist – Pakistan Meteorological Department +92 321 3093860  Abid Laghari Meteorological Assistant – Pakistan Meteorological Department +92 332 0303263 – ESMAP Pakistan – confidential - 6 SiteEvalReport_TandPMD_2014-08 3.3 Site 1 (roof top) Coordinates N 25.4229° E 68.5431°, altitude 25 m above mean sea level Site 1 is located on the roof of the PMD office building on the University campus. Figure 3: View from Site 1 to the North Figure 4: View from Site 1 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 on site. Table 1: Site checklist for site 1 Criteria/Measure Yes / No Notes - Rooftop, exactly Dimensions i Minimum area 10 × 10 m² 10x10 not available. Firm natural groundii No Ground typeiii Concrete Horizontally levellediv Yes Excavation for foundations - Casting Blocks Surface are preferred possiblev Fencing of the site possiblevi Yes No drifting sand/snowvii No No flooding possibleviii No – ESMAP Pakistan – confidential - 7 SiteEvalReport_TandPMD_2014-08 Obstructions Yes See Panoramic Pictures If yes, note direction, distance and approx. heightix Reflections or light sourcesx - Industrial areas or power No plantsxi Sources of smoke or vaporxii No Quarry or minexiii No Main road, dirt road, trackxiv Paved Roads Airportsxv No Quite far. Yes Within Sindh Settlements, towns, cityxvi Agriculture Surroundings University area Yes Agricultural patches around Agricultural areaxvii the site. Visible in the panoramic view Swamp, lake, river, oceanxviii No Sand dunesxix No 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 Yes Little to no Grid power Electricity availablexxvi power outages. Yes Approval to be Land use rights Permit availablexxvii given by PMD Yes Approval to be Operation permit Permit availablexxviii given by PMD – ESMAP Pakistan – confidential - 8 SiteEvalReport_TandPMD_2014-08 No underground or overhead No electrical lines, pipelines or Security similar xxix Measures against theft or No vandalism required?xxx Take 360° photographs or Yes Cellphone 360° denotes the panoramic photo, indicate photographs north direction North directionxxxi Regarding the aspects covered by the checklist, site 1 is suited for the installation of a ground measurement station. The installation on a roof-top is a good option since it elevates the station above many obstacles; In the direct surroundings there are no industrial facilities which have a negative impact the measurement. Furthermore, the site is outside of the major town of Hyderabad, which is preferable for representativeness reasons for the larger area. All roads in the surroundings are paved and therefore not heavily dust-emitting; permits to install and operate the station can be given by the PMD. 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 the trees to the west are blocking the sun at sunset, and a few distant obstacles are present in the east. The impact is further analyzed in the following paragraphs. – ESMAP Pakistan – confidential - 9 SiteEvalReport_TandPMD_2014-08 Shading Table for Sun Elevations >0° Figure 6: Shading Table for Sun Elevations >0° Figure 6 shows the shading table throughout the year. The obstacles in the west are shading the sensor up to 1 h before sunset throughout the year and a few minutes in the morning after sunrise. – ESMAP Pakistan – confidential - 10 SiteEvalReport_TandPMD_2014-08 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 in the morning is no more existant. Shading still occurs in the evening, however, although the duration is much reduced. – ESMAP Pakistan – confidential - 11 SiteEvalReport_TandPMD_2014-08 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° From Figure 8, it is clearly visible that shadings in the evening have some visible impact almost throughout the year. 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 direct shading. In total, 1.9 % of the time is affected by direct shading, with up to – ESMAP Pakistan – confidential - 12 SiteEvalReport_TandPMD_2014-08 3% in the months of March and October. The right figure shows the quantitative impact of shading on the Bird-DNI summarized for each month. For the whole year, the reduction of the annual Bird-DNI sum due to direct shading is about 2.4 %, with peaks in March and October also. Diffuse Shading and Reflections Diffuse shading and reflections of any mentionable quantity are not to be expected since no large obstacles close to the site and no highly reflective surface above sensor height can be identified. 4 Conclusion The surroundings of the location are acceptable for the installation of a ground measurement station. No significant single external influence from surrounding facilities on the overall meteorological and atmospheric conditions could be stated during the site visit, and the location outside of the city is good for the representativeness of the measurements for the surroundings. These benefits outweigh the fact that the shading profile of the site is not optimal. The shadings are acceptable since their occurrence can be determined beforehand and the affected periods can be excluded from the model validation. 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 by the local stakeholder after the two years measurement campaign is also probable, the sustainability of installing a meteorological station at PMD AgroMet Office in Tando Jam is expected to be high. The site is recommended for the installation of a Tier 2 meteorological station – ESMAP Pakistan – confidential - 13 SiteEvalReport_TandPMD_2014-08 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 - 14 SiteEvalReport_TandPMD_2014-08 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 - 15 SiteEvalReport_TandPMD_2014-08 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. xxxi See section „Fehler! Verweisquelle konnte nicht gefunden werden.“ above. – ESMAP Pakistan – confidential - 16 SiteEvalReport_TandPMD_2014-08