Request for Information (RFI) Solar and wind energy solutions for UNDP Offices, programmes and projects. (UNDP/PSO Ref )

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1 Request for Information (RFI) Solar and wind energy solutions for UNDP Offices, programmes and projects (UNDP/PSO Ref ) a) Background The ( UNDP ) is the UN s global development agency. UNDP is an organization with a far-reaching advocacy and capacity building impact. Further information may be found at b) Scope of the RFI Substantial progress has been achieved in moving UNDP towards greener operations both at HQ and in many Country Offices and Regional Canters. Several offices have launched greening initiatives to target activities and investments that reduce UNDP s consumption of and reliance on fossil fuels while providing other benefits such a security improvements, productivity, cost saving and staff wellbeing. Lack of stable and reliable power in a number of UNDP Country Offices present a large challenge which has disrupted operations regularly, subsequently impacting on delivery. To address the situation, most of the country offices affected have resorted to installing diesel generators for backup purposes, with extreme cases where above 80% of office power requirements is supplied by diesel generators. For the long term, diesel generators are not sustainable due to a number of reasons, top of which are high running costs, and impact on the environment (air pollution). To address the needs, UNDP is conducting a market research to identify what solar and wind solutions are available in the market. c) Requirements Bidders are kindly requested to provide us with the following information for the below LOTS. Kindly note that the LOT specifications are a preliminary draft and, therefore, it should be used as guidance and not as rigid/fixed requirements. - If you can supply any of the LOTS described below in sections c.i), c.ii), c.iii), c.iv), c.v), c.vi), c.vii), c.viii), c.ix) or propose an equivalent alternative. - If there are any specific requirements that cannot technically be met (please provide a technical reason/explanation to justify this). - Technical details and specifications of your products in accordance with each LOT specifications including any recommended deviations or amendments to the existing specifications below. - Indicative prices of the main components under each respective LOTS that you can supply. - Whether you would be interested in being invited to tender for such LOTS when we next have the need. - Quality assurance/certificates/standards of the products that you can offer. - Standard warranty details including duration of warranty for the main components. Page 1 of 7

2 c.i) LOT 1: Hybrid/grid connected PV system ( kwp) A complete grid connected PV system with battery storage is requested for permanent office power supply (as a turn-key project adapted to the specific UNDP country office). The size range ( kwp) indicates the total PV array power of interest taking into consideration that large systems may be composed of smaller subsystems. The grid type could be the national grid or a local grid established by a spinning generator. The system should replace (part of) the energy normally purchased via the grid supply. As the rules and regulations for local generation can differ from country to country, the system must be configurable to at least the following settings: - PV self-consumption and export of excess energy (Net metering scheme) - PV self-consumption without any export to the grid (Energy saving mode) Smart power management must be integrated in the inverter with the following operating modes: PV power directly to all loads (Grid is on) PV excess energy to the battery (Grid on or off) Battery charging from grid or generator if battery SOC is critically low (Grid on) Power from battery to critical (limited) loads via the inverter (Grid off) The hybrid inverter will charge a battery and deliver 3 phase AC power (50 Hz/230/400V) for critical loads within the office building. If grid power fails, the critical loads will run as long as there is sufficient battery capacity. The system will then send a signal for generator(s) start-up in case of low battery and no grid available. If the grid is present, the battery will be topped up by the grid above critical state of charge in order not to compromise battery life. Please notice that grid power quality may vary, so the inverters must be well protected against overvoltage, spikes and harmonics. Fault-ride-through option (by minor grid failures) will be an advantage. The hybrid PV systems will be assembled and installed by the vendor or his affiliates. The hybrid inverter(s) must monitor and display the following input/output powers: PV array, Grid, Battery, Generator, loads. The inverter must connect to the internet for surveillance of its operation and for general performance monitoring. In addition to the inverter, irradiance and temperature values must be monitored by the system. Specific requirements for PV modules: PV modules must be certified according to standards IEC for crystalline or IEC for thin film modules. Preferably, modules should also meet the requirements of IEC ed 2.0 Salt mist corrosion testing of photovoltaic (PV) modules. Modules with low derating factor in hot climates are preferred. Specific requirements for batteries: Useful capacity kwh. Deep cycle, sealed lead-acid or Lithium based (with BMS). The battery must be mounted in an external enclosure/container. In case of Lithium based battery, the battery unit must include a battery management system. Number of guaranteed DOD: >2000 Specific requirements for mounting systems: 3 mounting options are allowed: Roof mount, ground mount or parking lot shade system. Array inclination angle degrees depending on site. East/west combined orientation may be used. Aluminium or galvanized steel structure with stainless steel screws for connection of PV modules. All mounting systems must be designed for wind speeds up to 200 km/h Page 2 of 7

3 c.ii) LOT 2: Solar PV off-grid systems 2-10 kw This is a stand-alone PV kit for non-grid areas. The system should be able to power a typical small office with computers, lamps, printer, internet router and other equipment, in some cases air-con as well. The daily energy demand and climate will vary from case to case. In some regions, there will not be sufficient sunlight during all months to run the offices on solar energy only so an external generator or small wind turbine may therefore be installed as a supplement to the PV systems. The system will be optimized for each individual case, and therefore, the supplier must be able to supply different PV array sizes and different battery packages for a given system configuration. The PV kits will be assembled according to supplier s manual on site, -thus a clear step by step description is mandatory. The systems will be installed in existing buildings, by local electricians, usually with the PV array on the roof and the battery bank in an external weather proof enclosure. Power is to be delivered as single or 3 phase AC, usually 50 Hz/230/400V. A 12 V DC outlet - direct or via converter - would be an advantage, but is not mandatory. The office appliances are not part of the requirement. The system controller must have the ability to start an external generator in case of low battery level/high power demand. Minimum content of the kit: Modules, batteries, cabling, switches, fuses, charge regulator, standalone inverter, module roof mounting fixtures and mounting/operating instructions in English. Specific requirements for PV modules: PV modules must be certified according to standards IEC for crystalline or IEC for thin film modules. Preferably, modules should also meet the requirements of IEC ed 2.0 Salt mist corrosion testing of photovoltaic (PV) modules. Modules with low derating factor in hot climates are preferred. Specific requirements for batteries: Deep cycle sealed lead acid or Lithium Iron Phosphate type. In case of Lithium based battery, the battery unit must include a battery management system. Number of guaranteed DOD: >2000 Specific requirements for inverter/charger: MPPT charging, true sine wave inverter, auto shutdown when there is no AC load, conversion efficiency minimum 93%. c.iii) LOT 3: Container based transportable PV stand-alone system (factory built) A Turnkey PV system for mobile power supply in remote areas is requested. The daily energy demand and climate will vary from case to case, and in some regions, there will not be sufficient light during all months to run on solar energy only so an external generator or small wind turbine may therefore in some cases be installed as a supplement to the PV system. Energy is delivered as single or 3 phase AC power, usually 50 Hz/230/400V. The office appliances are not part of the delivery, except lamps inside the container. Minimum content of this requirement: preassembled container including PV modules, batteries, cabling, switches, fuses, charge regulator, standalone inverter, container roof mounting fixtures and mounting/operating instructions in English. During transportation the modules could be packed in the container and installed at the destination or they may be folded along the wall and roof. The container should be a standard 10 or 20 size cargo container. Specific requirements for PV modules: PV modules must be certified according to standards IEC for crystalline or IEC for thin film modules. Preferably, modules should also meet Page 3 of 7

4 the requirements of IEC ed 2.0 Salt mist corrosion testing of photovoltaic (PV) modules. Modules with low derating factor in hot climates are preferred. Specific requirements for batteries: Deep cycle sealed lead acid or Lithium Iron Phosphate type. In case of Lithium based battery, the battery unit must include a battery management system. Number of guaranteed DOD: >2000 Specific requirements for inverter/charger: MPPT charging, true sine wave inverter, auto shutdown when there is no AC load, conversion efficiency minimum 93%. c.iv) LOT 4: Street lamps The street lamps are for permanent or temporary installation in camps, parking lots and other outdoor areas where some light is required during the dark hours. -The lamps must automatically switch on during dark hours and optionally they could have energy saving feature by on/off with motion sensor control. - The lamps will include PV array, battery, LED light source and all necessary control equipment. - The lamps must be delivered as a simple kit including everything, except for the foundation. A clear and visual mounting and operation manual in English is mandatory, as the lamps will be installed by local contractors. The typical (indicative) size would be pole height 6-8 m, 50 W PV panel and 2000 Lumen LED lamp. -Batteries must be free of maintenance and suitable for operation in a hot climate. -Batteries should preferably be mounted at ground level or (in hot climates) buried for overheating protection. Minimum specifications: - Pole height above ground: 6 m, galvanized steel or aluminium - Lamp: 1000 Lumen white LED source with reflector and UV resistant transparent cover - Luminous efficiency 100 Lumen/Watt - LED life: Hours - PV panel: 40 Wp, crystalline silicon with tempered glass - Battery: Deep cycle, maintenance free, useful capacity 300 Wh - Fuses, charge regulator and all other electrical parts shall be integrated and IP 64 protected - Automatic plus manual on/off switch - Galvanized steel or concrete foundation - Designed for wind load 40 m/s - Integrated lightning protection Page 4 of 7

5 c.v) LOT 5: PV refrigerator PV refrigerator (Separate freezing compartment is not required, but is allowed as an option): - Option 1: Portable system including PV + battery The requested PV driven general purpose refrigerator is a standalone unit with battery, and a PV panel that is sized for power supply in hot regions (max 43C). The refrigerator will typically be used for temporary used in the field - Option 2: Fixed 12 Vdc appliance. The requested PV driven general purpose refrigerator is a standalone unit without battery, and a PV panel that is sized for power supply in hot regions (max 43C). The refrigerator will be used as part of a 12V dc solar powered system. Minimum specifications for both options: - Volume: 40 litres cooling compartment - PV panel: 100 Wp (applicable to option 1) - Temp. performance: max 8 C internal temperature@ 40 C ambient - Accuracy of thermostat: +/- 2 C - Energy label: A+ or equivalent c.vi) LOT 6: PV ground water pump (submersible) The pump will run directly on a dedicated PV array, which is sized for the borehole depth, daily volume and the local climate. The pump system shall comprise the pump unit, cable and pipe for 100 m borehole, and a control unit. The regulator unit is connected directly to the PV array. Battery is not required. The typical supply of water from 50 m depth would be 20 m3/day but may vary from site to site ( m depth and m3 / day expected range. Village system 200 persons a 100 l/day = 20 m3/day). Water is pumped to a water tower that is supplied separately by third party together with the well itself. Minimum specifications: - Stainless steel low maintenance pump for direct PV Rated flow 4 50 m static head - Level switch for dry run protection - Borehole pipe: Polymer or G-I pipe 1.5 inches with fittings (50 m) - Submersible cable (50 m) - Earthing wire (50 m) - Steel rope, 5 mm (50 m). - Motor type: High efficiency permanent magnet, brushless - Pump controller with PV panel and/or wind power input. - Detailed installation and operation manual in English Page 5 of 7

6 c,vii) LOT 7 - Solar thermal appliances: solar cooker Simple box or panel cooker for relief camps or similar purpose, where there is no or little fuel available for cooking. The cooker may be used for baking, cooking or hygienization of drinking water. The hot zone should be protected from wind cooling by a temperature resistant glass or plastic cover. Some level of concentration of sunlight may be necessary, depending on climatic zone and use, but the units must operate without frequent adjustments for tracking the sun. The performance in full sun (1000 W/m2) should be at least: - Small size cooker/oven: 1 liter of water boiling after 60 minutes, stagnation temperature >150 C - Community size cooker/oven 50 liter of water boiling after 60 minutes, stagnation temperature c.viii) LOT 8 Solar thermal appliances: Solar thermosiphon domestic hot water system The request concerns simple self-circulating systems for domestic hot water preparation (community or family size). The solar appliance must comprise the complete system including tank, solar collectors and pipework. Integrated collector and storage solutions are allowed for use in non-freeze climates only. In temperate regions, freeze protection must be applied. The water heaters are to be used for preheating of hot water or as the only hot water source. Community size systems may be composed of smaller units connected in parallel, or configured with a central hot water tank. For large systems, the supplier must appoint a local installer who can do the correct sizing and installation work. Minimum specifications: - Capacity 200 litres. Tank must be resistant against corrosion (via coating or electrode) - Solar collector with direct or indirect water heating - Selective coated flat plate or vacuum tube collector 3 m2 - Protection against overheating(scalding) and freezing - The system must have an international recognize quality assurance certificate. - Operating and maintenance manual in English c.ix) LOT 9: Small scale wind turbine The request concerns a complete turnkey system including wind turbine and all planning and installation works. The requested wind turbine will be used as an additional power source in solar PV standalone systems, small diesel grids or for water pumping. The electric output of the wind turbine could be DC or AC and may be used directly or via a battery bank. The typical size would be a rated power of 3-6 kw and a hub height of m depending on local wind conditions. The wind turbine delivery includes the turbine with tower, control and cabling, but not foundation. It is assumed that most wind turbines will in general be installed in regions with moderate annual mean wind speed, however they must be constructed to survive wind speeds of at least 40 m/s. Only well proven models with at least 5 years documented field experience and certification by a recognized body will be accepted in this lot. The bidder is requested to offer one or two solutions within the given range. Minimum specification: - Rated power 3 kw@11 m/s - Rotor diameter 4 m - Tower height 10 m. It must be possible able to lower and raise the tower by means of a hand winch. - Cut-in wind speed less than 4 m/s. - Survival wind speed 40 m/s - The wind turbine system shall comply with IEC : ed3.0 ( ), in the appropriate sections for: Small wind turbines. Page 6 of 7

7 d) Additional documentation to be submitted Interested suppliers shall include the following set of documentation in their responses to this Request for Information: i. A brief profile of the company including size, location, areas of expertise, years in business, product range proving the capacity to supply and deliver the above mentioned goods. ii. Product brochures (including detailed technical information) for one, several or all LOTS specified in this RFI. iii. Information on projects implemented earlier with these products, including geographical location of projects, project financial value, date of completion, etc. iv. Audited financial statements for the last two years (Consolidated Balance Sheet, Profit & Loss, and Cash Flow statements). v. Complete contact details of the person/s to whom any further correspondence must be sent, including name, position, address and phone number. vi. Client s references. e) Submission details UNDP/PSO invites potential suppliers to submit product/equipment information. The response to the request for information should specify UNDP/PSO reference number and shall be received no later than Hrs, Copenhagen local time on Friday 27th March UNDP intends to use the outcome of this RFI to inform any possible upcoming procurement request to meet requirements in the above specified areas of need. Any requests for clarification about the contents of this Request for Information, in principle, shall not be answered. No phone calls will be accepted. Interested suppliers should forward their documentation by (max. 4.5 MB per message with no limits on number of messages), to the following addresses: Joaquin.Albiach and Blessing Kabasa joaquin.albiach@undp.org copying blessing.kabasa@undp.org (PSO) in collaboration with Office of Information Systems & Technology (OIST) Page 7 of 7