What is SUNREF ?

Understanding SUNREF Mauritius

Downloadable Documents

SUNREF Mauritius Brochure

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Guide for Project Preparation and Submission

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List of Eligible Materials and Equipment (LEME)

This pre-established list provides a precise description of the eligible technologies for climate change mitigation and adaptation projects

LEME Download Links: LEME Adaptation Download 2.2 MB | LEME Mitigation Download 4.2 MB

No Ref. Best Available Technology (BAT) Objective Applications Minimum Performance Criteria / Minimum requirements Download Links
A Water resource management
A.1 Rainwater collection for domestic use
A.1.2 Water tank Reduce consumption of drinking water for non-drinking purposes

Install to collect rain water from the roof and gutters

Decrease of overall water consumption (10% minimum) or % of non-potable use provided by collected water (20% minimum)

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A.2 Water runoff collection
A.2.1 Retention basin Collect runoff water for local non-drinking usage instead of resorting to utility facilities

Underground structure of runoff water with regulated drainage system under green areas, sports field, or for smaller volumes at private homes

Decrease of overall water consumption (10% minimum) or % of non-potable use provided by collected water (20% minimum)

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B Water demand management
B.1 Technologies for improving water efficiency (domestic use)
B.1.1 tap aerator Reduce potable water consumption

Installed on each tap (domestic and industrial used)

Decrease of water consumption (30% minimum)

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B.1.2 efficient shower Reduce potable water consumption

Installed on each shower (domestic and industrial used)

Decrease of water consumption (30% minimum)

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B.1.3 Water savers for WC tank Reduce potable water consumption

Installed on each toilet (domestic and industrial used)

Decrease of water consumption (30% minimum)

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B.1.4 rainwater system to provide flushing water to the toilet Reduce potable water consumption

Implement for new construction (private ou industrial)

Decrease of water consumption (30% minimum)

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B.1.5 timed tap Reduce potable water consumption

Implement for new construction (private ou industrial)

Decrease of water consumption (30% minimum)

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B.1.6 limited flow systems (flanges) Reduce potable water consumption

Implement for new construction (private ou industrial)

Decrease of water consumption (30% minimum)

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B.1.7 double stop mixers (sinks) Reduce potable water consumption

Implement for new construction (private ou industrial)

Decrease of water consumption (30% minimum)

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B.1.8 Thermostatic mixing valves (showers) Reduce potable water consumption

Implement for new construction (private ou industrial)

Decrease of water consumption (30% minimum)

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B.1.9 Water-saving dishwasher models Reduce potable water consumption

To be installed on each tap (domestic and industrial used)

To be installed on each tap (domestic and industrial used)

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B.2 Techniques for improving water efficiency for agricultural / landscape use (including water-saving irrigation techniques)
B.2.1 Micro-irrigation or drip irrigation Water the plantations as close as possible. Limit water losses by evaporation, splashing, ...)

Drip irrigation with subsurface pipes

Decrease of overall water consumption (10% minimum) or % of non-potable use provided by collected water (20% minimum)

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B.2.2 Lateral move irrigation system Limit water losses

Sugar cane application and large exploitation

Decrease of overall water consumption (10% minimum) or % of non-potable use provided by collected water (20% minimum)

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B.3 Techniques de réutilisation des effluents traitées
B.3.1 Microstation, with tertiary treatment Used treated effluent for irrigation purposes. Reduction of potable water consumption

Domestic used and indutrial use

Mauritius standards for reused in irrigation + supplier performance (on technical specifications)

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B.4 CIP (Cleaning In Place)
B.4.1 CIP (Cleaning In Place) with recirculation process The CIP is an automic system for installation cleaning without proceeding to dismantling all the equipment

Industrial Use: beverage industry, agrofood industries, diary product activities

Decrease of water consumption by 70% in relation with cleaning processes and chemical reagent consumption by at least 40%, from return of experiences (technical littérature) when recirculation configuration is implemented

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C
C.3 Protected crops
C.3.1 Defense techniques (windbreaker, nets, etc.) High reduction of water consumption and capacity building towards a resilient crop production system

Crop cultivation / SmartAgri

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C.3.3 Tunnel greenhouse High reduction of water consumption and capacity building towards a resilient crop production system

Crop cultivation / SmartAgri

4.35m rigde height 2.4m front beam height

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C.3.4 Tropic greenhouse High reduction of water consumption and capacity building towards a resilient crop production system

Crop cultivation / SmartAgri

Crop cultivation / SmartAgri

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C.3.5 Classic greenhouse High reduction of water consumption and capacity building towards a resilient crop production system

Crop cultivation / SmartAgri

Crop cultivation / SmartAgri

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C.3.6 Flat Net house High reduction of water consumption and capacity building towards a resilient crop production system

Crop cultivation / SmartAgri

roof height 4.0m No trellising support

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C.3.7 Total Net house High reduction of water consumption and capacity building towards a resilient crop production system

Crop cultivation / SmartAgri

roof height 5.1m Trellising support

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No Ref. Best Available Technology (BAT) Objective Applications Minimum Performance Criteria / Minimum requirements Download Links
A Improve thermal performances of building enveloppe
A.1 Roofs and walls: retrofiting or new building
A.1.1 Insulated metal Panels Polyurethane / polycyanurate foam , Extruded polystyrene, Glass wool Improvment of roof and wall insulation on open framing structures

Existing or new industrial buildings(example : air conditionned production plants, warehouses)

Roof : U< 0,4 W/m2 °C , Walls : U<0,5 W/m2 °C + Reflective or clear colored external coating

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A.1.2 Extruded or expanded polystyrene panels, polyurethane panels, spray polyurethane foam , glass wool, rock wool panels or rolls Improvement of roof insulation on concrete flat roofs and walls

All air conditionned buildings : Offices or apartment buildings, hotels hospitals, production plants…

Roof : U< 0,4 W/m2 °C , under the waterproof covering Walls : U<0,5 W/m2 °C

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A.2.2 Adhesive film sticked on existing windows for reducing the heat transfer in the building Reduction of thermal transfert through windows

Retrofit of all kind of air-conditionned buildings; windows exposed to direct sunshine

Solar energy reflection >50 %

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A.2.3 External Shading devices : blinds, window covers , Horizontal or vertical sun protections in facade Protection against direct sunshine (panels or other protecxtion devices)

New or retrofit of all kind of air-conditionned buildings; protection type depends of the sunshine exposure

To avoid the direct sunshine on the more exposed facade (s) in all season. The coverage ratio of the sunshine protection devices will be under 50%of the total surface in most cases.

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A.2 Windows
A.2.1 Double-glazing window with low SHGC glass Improvement of thermal transfert through windows

New or retrofit of all kind of air-conditionned buildings; windows exposed to direct sunshine

Global U factor ≤ 2 W/m2°K, Low E coating, SHGC (solar heat gain coefficient)<0,5

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A.2.2 Adhesive film sticked on existing windows for reducing the heat transfer in the building Reduction of thermal transfert through windows

Retrofit of all kind of air-conditionned buildings; windows exposed to direct sunshine

Solar energy reflection >50 %

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A.2.3 External Shading devices : blinds, window covers , Horizontal or vertical sun protections in facade Protection against direct sunshine (panels or other protecxtion devices)

New or retrofit of all kind of air-conditionned buildings; protection type depends of the sunshine exposure

To avoid the direct sunshine on the more exposed facade (s) in all season. The coverage ratio of the sunshine protection devices will be under 50%of the total surface in most cases.

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B Improve HVAC&Refrigeration System performances
B.1 Individual aand medium sacae air conditionning systems up to 100 kW
B.1.1 Monosplit air cooled with inverter P cooling <20 KW. Monosplit cooling power for households should be under 5,0 kW/unit Reduce the electric consumption by replacing '' no inverter'' air conditioners

For small air conditionned spaces (housing, offices, retail stores….)

For small air conditionned spaces (housing, offices, retail stores….)

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B.1.2 Multisplits air cooled with inverters and with an unique extenal unit up to 100 kW Reduce the electric consumtion by replacing air-conditioners in the configuration of several monosplit units in the same building) with the inverter design. By a diffrent design (only one outdoor equipment)

For buildings requiring several units (5 units maximum) in small scale offices or housing)

At least Energy Efficiency class : SEER > 5,10 fo Class A, Class A+ mass market. Products Class A++ or A+++ if available on the market could be promoted.

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B.2 Medium range air conditionning systems above 100 kW
B.2.1 Variable refrigerant flow (VRF) ou variable refrigerant volume (VRV) units above 100 KW Reduce the electric consumption by replacing existing monosplit, multisplit or small chilled water-air conditionned systems. The design is either under the '' variable refrigerant flow or variable refrigerant volume'' VRF ou VRV concept for systems above 100 kW in most cases.

For medium size buildings, up to 40 rooms (housing, offices, hotels, hospitals…)

SEER ≥ 5,1 VSD ; or varaible speed drive

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B.3 Efficient refrigeration systems
B.3.2 Water cooled high efficiency chillers. And water cooled chillers to achieve higher SEER (in Port bassins for example, at rather low depths) Reduce electricity consumption of chillers and pumps by replacing existing air cooled or water cooled chillers by more efficient systems in termes of EER)

Large public and private air conditionned office buildings, hotels, hospitals and small scale industries

Eurovent class A SEER from 5,1 to 8 (water cooling) . Hydrocarbon HFC refrigerants only.

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B.3.1 Air cooled high efficiency chillers Reduce electricity consumption of chillers and pumps by replacing existing air cooled or water cooled chillers

Large public and private air conditionned office buildings, hotels, hospitals

Eurovent class A EER> 3,1 or Inverter ESEER >4,5 Hydrocarbon HFC refrigerants only

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B.3.3 Absorption/adsorption refrigeration Systems considering their high cost of investments (case by case demo projects) and their expected EER Replace existing water cooled chiller ,to benefit from free energy produced by waste in industrial process or solar heating panels. As far as solar energy conversion is concerned, the EER should be achievable at the required levels through demo projects.

Industrial plants, hotels, hospitals equipped with solar heating panels

Only when free energy is available (heat recovery or solar energy). Back up systems could be necessary .

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B.4 Large range air conditionning systems - cooling towers and Advanced cooling systems
B.4.1 High efficiency dry cooling tower with high efficiency fans and motors, VSD Reduce electricity consumption by replacing existing dry cooling tower

Large air conditionning installations with water chiller ; industrial plants, large office buildings, hotels, hospitals

At least IE2 class efficiency motor , VSD

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B.4.2 High efficiency evaporative cooling tower , mini IE2 fan motors and VSD High efficiency evaporative cooling tower , mini IE2 fan motors and VSD

Large air conditionning installations with water chiller ; industrial plants, large office buildings, hotels, hospitals

At least IE2 class efficiency motor, VSD

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B.4.3 High efficiency evaporative cooling tower with hybrid condenser , mini IE2 fan motors and VSD Reduce electricity consumption by replacing existing dry cooling or evaporative tower

Large air conditionning installations with water chiller ; industrial plants, large office buildings, hotels, hospitals

At least IE2 class efficiency motor, VSD (variable speed drive)

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B.4.4 Alternative cooling systems for large scale buildings (commercial malls), agrofood industries and commercial logistics. Choice of refrigerants according to Greenhouse impacts and energy efficiency targets Using refigerants like the R448a in cooling systems or the NH3 and CO2 refrigerants (natural fluids) to reduce energy consumption by 20% and have a reduced Global Warming Power (ratio: GWP level). Selection criteria refer to comments.

Large scale cooling installations of commercial centres and hypermarkets (60% of total electricity consumption for cooling). Industries in the agrofood sector as the commercial logistics having to retrofit the exiting facilities.

At least increase of 20% of the energy efficiencvy Replacing the polluting fluids such as CFCs, and HFC (R404a and R507a). The range of fluids is quite large. The GWP is the main criteria (base 0: natural fluids)

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B.5 Pumping equipements
B.5.1 High efficiency pump (Motor and pump integrated or non integrated) Replace electricity consumption bu replacing existing pump

For or pumps having a high duration of functioning

at least IE3 class efficiency motor or IE2 class+VSD (variable speed drive)

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B.6 Air handling units
B.6.1 High efficiency air handling unit (AHU) Reducing electricity consumption by replacing existing AHU

HVAC for large spaces

At least IE2 class efficiency motor equipped withVSD (variable speed drive)

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B.6.2 Air handling unit with cold recovery Reducing electricity consumption by replacing existing AHU

Places with high occupation when an important renewal of air is needed

plate heat exchanger or thermal wheel

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B.7 Water chilled water storage (Thermal storage) system
B.7.1 Cold chilled water storage (thermal storage) systems include regulation devices, supervision equipements…) to have high performance ratio Store energy produced as free energy at a low cost to postpone its use during the peak hours (peak demand)

Hotels, hospitals and places needing continuous air conditioning

Minimum chilled water capacity of storage : at least 2 hours of nominal hourly production of the main chiller (indicative value)

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C Reduce energy consumption to produce hot water
C.1 Solar water heaters
C.1.1 Vaccuum tube collectors. Produce hot water from solar energy for sanitary or industrial uses.

When domestic hot water is needed (hotels, hospitals, private houses)

EN 12975-1, ISO 9806, EN 12976, EN 12977

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C.1.2 Flate plate collectors Flate plate collectors

When domestic hot water is needed (hotels, hospitals, private houses)

EN 12975-1, ISO 9806, EN 12976, EN 12977

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C.1.3 Heat pumps for the production of hot water for households or large scale facilities within the residential sector or hotels Heat Pumps: producing hot water of households or large scale facilities with high SEER above 4, leading to high electricity efficiency and avoiding constraints linked to large roof surface needed for thermal solar panels

Heat Pumps: Domestic hot water (households) and large scale implementation (hotel sctor) with already case-studies available (hotel sector)

The investment shall not replace existing solar heating device. SCOP ≥ 4,2 which leads to 70-75% of electricity savings (reference: electric water heating) Storage tanks of 150-300 l for households Storage tanks of 2 000 l to 15 000 l for the hotel sector

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C.2 Heat recovery
C.2.1 Heat recovery exchanger on chiller condensers. Recover heat from hot gases before chiller condenser to produce hot water for sanitary or industrial uses

When there is simultaneous need for air conditioning

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C.2.2 Heat recovery on air compressor Recover heat from hot compressed air to produce hot water for sanitary use

Generally, for the satisfaction of the needs for hot water of the toilets of the staff

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D Improve lighting system efficiency
D.1 Lamps, fixtures and ballasts
D.1.1 Led lamps: led downlight fixtures. Replace lamps and fixtures existing lamps by more efficient and sustainable led equipped devices.

When the durations of lighting are important (commercial premises, halls and circulations in hotels and hospitals)

LED Lighting (Power Density: 2,5 W/m2-100lux)

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D.1.2 Connected supervision (web) of street lighting systems using LED lamps with real time monitoring Electricity savings through low energy consumption strategies with LED (lamps) and connected monitoring devices to adapt the lightling power in real time for the best service

Smart cities with new lighting implementation strategy and in urban renewal programmes (on selected sites)

At least 60% electricity savings (reference: existing street lighting systems)

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E Reduce electricity consumption by monitoring and Control System implementation
E.1 Lighting , HVAC control system and Advanced Cooling systems
E.1.1 Occupancy sensors Reduce lighting and air conditionning consumption by implementing occupancy control systems

Hotels, offices, corridors

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E.1.2 Energy saving switch for hotel Reduce the electric consumption by automatic cut of the supply of the main electrical devices

Hotels

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E.1.3 Window air Conditioning shut-off Switch Automatic stop of functioning of air conditioning when windows are opened

Generally for any window in air-conditioned places

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E.1.4 DALI (Digital adressable lighting interface) Decrease of electricity consumption of electricity by an optimized management of lighting

Mainly for offices or large halls

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E.1.5 Building management system associated with data collection Computerized data collection of energy consumption parameters such as flows, electric power, temperatures, pressure in ordrer to manage anf optimize lighting, HVAC and Cooling systems

For any complex air conditioning installation and cooling applications in the commercial centres as an example.

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F Improve energy efficiency of electrical motors and promote renewale energy solutions (PV systems and solar pumps)
F.1 Electric motors
F.1.1 High efficiency low voltage motors Replace existing motors by efficient motor

For electrical motors with a high annual duration of functioning (for example more than 3000 hours per year)

P> 7,5 kW : mini IE3 Premium efficiency class criteria P<7,5 kW, mini IE2 High efficiency class criteria

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F.1.2 Variable Speed drive for AC induction motors 0,5 kW- 1 MW range Add Variable speed drive to an existing motor

Economically relevant if the regime of functioning is variable

For electrical motors with a high annual duration of functioning (for example more than 3000 hours per year)

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F.1.3 Variable speed drive for Synchronous motors 0,75kW- 500 Kw Add Variable speed drive to an existing motor

Economically relevant if the regime of functioning is variable

For electrical motors with a high annual duration of functioning (for example more than 3000 hours per year)

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F.2 PV Solar Systems
F.2.1 Photovoltaïc Systems with mono/polycrystalline PV panels, thin film panels, inverters, EMS or energy management systems PV plants on roofs or ground

Ground or roof top applications of different power size from 1-6 Kw households ; 6-100 Small – Medium scale fo both market: s grid feeding systems or auto-consumption systems

Electric efficiency ≥ 15 %
Total installed capacity ≤ 100 kWc (mono-polycrystalline panels)

Electric efficiency ≥ 15 %
Total installed capacity ≤ 100 kWc. (thin films)

Electric efficiency ≥ 15 %
Total installed capacity ≤ 100 kWc. (inversters)

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F 2.2 PV tracker for small/medium scale projects didn't prove to be beneficial for large projects (benefits/ costs ratio and return of investments) Small or medium scale if increased energy efficiency is matching overcosts of investments

Electric efficiency ≥ 15 % Total installed capacity ≤ 100 kWc.

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F.2.3 High efficiency Solar Pump. Pomps with PV direct drive

Electric efficiency ≥ 15 % Total installed capacity ≤ 100 kWc.

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G Improve performance of Compressed air system
G.1 Compressors
G.1.1 High efficiency Screw Air Compressor Replace reciprocating air compressor

For general uses, for workshops and industrial units

High efficiency motor IE2 class + VSD

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G.1 Compressed air dryers
G.2.1 Cycling Refrigerated air dryer or VSD compressor air dryer Replace air dryer by high efficiency equipment

For industrial uses requiring an medium dry air (dew compressed air: 3°C)

specific consumption ≤ 5 kWh/1000 m3 (air cooled) ≤ 3 kWh/1000 m3 (water cooled) HFC refrigerants only

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G.2.2 Absorption air dryer Replace air dryer in case of high quality and low volumes

For medical or food industrial uses requiring a clean and very dry air

Heatless type Required air quality class ≤3

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H Improve performance of steam production and steam network
H.1 Boilers
H.1.1 High efficiency steam boiler In case of new equipment or boiler house retrofit

For industrial and tertiary uses (laundries of hotel, hospitals)

Net thermal efficiency ≥ 92%

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H.1.2 Economiser (Non-condensing) Add to a standard boiler when a constant régime

To improve the efficiency on industrial boiler rooms working permanently to a high regime

Efficiency by up to 4%.

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H.2 Burners
H.2.1 High efficiency forced draught type burner As a replacement of classic ventelle burner

Applicable to any burner of steam or hot water boiler having a high opérating regime

Efficiency up to 3 % of fuel energy consumption and 20% of electricity consumption CO < 40 mg/kWh, NOx≤ 120 mg/kWh Speed-controlled air fan motor, CO/O2 controler

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H.2.2 Oil burner manual or testing kit To allow a better regulation of burners and an improvement of the burner efficiency

Applicable to any steam or hot water boiler house

Energy saving : variable, up to 1 % of fuel energy consumption

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H.3 Insulation for plumbing and equipment
H.3.1 Removable insulating pads or valves and fittings To reduce heat losses of the steam network

Applicable to any steam boiler house

mini 50 mm thickness : Aluminium coated or silicone coated fiber glass or rockwool

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H.3.2 Fiber glass or foam glass pipe and fitting insulation To reduce heat losses of the steam network

Applicable to any steam or hot water boiler house

mini 50 mm thickess ; Metal coated fiber glass or rockwool

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I General process equipments
I.1 Fan
I.1.1 High efficiency fan Replace or retrofit of fans on industrial installations or HVAC

Applicable to high power fans and boosters in industry sector and cooling towers

at least IE3 class efficiency motor or IE2 class + VSD

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I.2 Pump
I.2.1 High efficiency pump Replace or retrofit of pumps on industrial installations or HVAC

Applicable to pumps for ice water networks, and cooling loops, as well as to the pumps for diverse uses in industry.

At least IE 2 class efficiency motor + VSD

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I.3 Heat pump
I.3.1 High efficient heat pump Production of hot water for sanitary or industrial use

For the production of medium-temperature hot water in the industry, and for the production of domestic hot water in the hotels and the hospitals

COP ≥ 5.10 5 (water to water type)
COP ≥ 3.8 (air to water type)

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I.4 Sensors and metering
I.4.1 Pressure, Temperature, Humidity, Mass flow rate, power, lumens. These sensors will be used for data collection and energy performance contracting Optimization of the energy use of equipments for monitoring objectives in the frame of energy performance schemes or energy management approaches

Applicable to all industrial processes and tertiary sectors considered as intensive energy consumers

CE marked ; Compatibility to EN 15500

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J Specific Process equipments
J.1 Coolrooms, refrigerated showcases and display cabinets
J.1.2 Reinforced wall and roof insulation Reduction of electricity consumption by retrofit of equipements

Applicable to cold rooms

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J.1.1 High efficiency coolrooms, refrigerated showcases and display cabinets Reduction of electricity consumption by more efficient new equipements

Applicable to all food stores and food cold rooms

Including reinforced wall and roof insulation, double glazing doors, high efficiency compressors and fans (VSD drive, electronic commuted), high efficiency led lighting

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J.1.3 Night blinds Reduction of electricity consumption by retrofit of equipements

Applicable to food displays

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K Renewable Energy: hydroelectricity
K.1 Micro / pico- hydroelectricity
K.1.1 Hydroelectric turbine Power of a few KW (pico) or up to 100 kW generators, alternators, EMS (energy management systems) Increase of the production by retrofit or replacement of equipments

Efficiency > 80% and 85% on generators and alternators

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L Urban Street furniture and PV systems for new services
L.1 Sustainable street furniture web-connected and with PV powered associated to battery storage Provide new neigborhood services with PV powered urban furniture not connected to the grid (E-Tree concept)

Charging smart phones or computers, water supply, lighting at night (LED), WIFI services with PC powered furnitures (1,5 to 7 kW per urban furniture)

PV panels should comply with the performance specifiactions (F 2,1) and lighting with LED adapted to this local application

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M E- Mobility solutions for companies, transport operators and leasing companies
M.1 E-Mobility developed by companies and transport operators Introduce E-mobility solutions for large scale applications excluding households

Transport, Industrial and leasing companies

Renewable Energy coverage of charging needs (power) with minimum of 20 kW for a fleet of corporate vehicules (charging point power of 20 kW and installed solar PV of 20 kW minimum).

PV system has to be connected to the grid via MSDG or 100% off-grid.

For residential, ONLY through leasing companies, PV system has to be connected to the grid via SSDG or 100% off-grid

Type of vehices: cars, vans and minibuses.

An electric car < 180 kw is eligible. All cars > 180 kW are considered as luxurious cars

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With the financial participation of

In partnership with

Implemented by