report on goris town street lighting system · four specific activities: (i) organization of energy...

The RA Ministry of Nature Protection

“Green Urban Lighting” UNDP-GEF/00074869 project

REPORT On Goris Town Street Lighting System

YEREVAN - 2015

2 “Green Urban Lighting” UNDP-GEF/00074869 project

CONTENT 1. Background ................................................................................................................................. 3

2. Purpose of the monitoring missions ........................................................................................ 4

3. Description of the municipal lighting infrastructure ............................................................... 4

Street lighting infrastructure .................................................................................................. 4

Duration of system operation ................................................................................................ 5

Capital and operation costs .................................................................................................. 6

Operation and maintenance of the system ......................................................................... 6

Technical condition of the system ........................................................................................ 7

Procurement of equipment .................................................................................................... 7

Development plans ................................................................................................................. 7

Audit of the system ................................................................................................................. 7

4. Description of proposed pilot streets ....................................................................................... 7

6. Proposal on the pilot street lighting systems improvement ............................................... 12

Syunik and Qristaphor Streets ............................................................................................ 12

Mashtots Street ..................................................................................................................... 13

7. Recommendations on the proposed pilot project................................................................ 14

8. Improvement of the whole municipal lighting system ......................................................... 15

9. Indoor lighting system of Goris .............................................................................................. 16

10. Development program for architectural lighting of Goris ................................................. 16


1. Background Urban lighting is a considerable source of municipal GHG emissions and one of the main items of municipal budget costs. At the same time urban lighting sector has significant potential for energy saving along with buildings and transport sectors. In 2014, the UNDP and the Global Environment Facility in joint cooperation with the Ministry of Nature Protection of the Republic of Armenia and the Yerevan Municipality initiated the Green Urban Lighting Project in Armenia with the overarching aim to save energy and to reduce emissions of greenhouse gases by increasing energy efficiency of municipal lighting in the cities of Armenia via implementation of municipal investment programs and national policies. The focus of the project is on urban lighting sector, which covers all lighting installations managed and paid for by municipalities, such as lighting of streets, outside public areas, illumination of city buildings, lighting system in municipally-owned and operated buildings and facilities, and yards in residential areas. The objective of the project is to be achieved through implementation of the following four specific activities: (i) organization of energy audits of municipal lighting systems, development of plans for energy efficient upgrades of the studied urban lighting systems and raising awareness and building capacities of the relevant target groups of stakeholders on modern energy efficient lighting technologies and solutions; (ii) implementation of demonstration projects aimed at increasing energy efficiency and reliability of urban lighting systems as well as improving the quality of illumination; (iii) creation of relevant financial and institutional mechanisms for continuous application of modern energy efficient technologies in urban lighting sector, and, (iv) development and enforcement of national policy, norms and standards of energy efficient lighting. Within the scope of the second activity, the project team assists municipalities in conducting the energy audit of outdoor and indoor lighting systems, developing recommendations for the energy efficient upgrade of the systems, identification and implementation of demonstration projects as well as subsequent monitoring of the pilot streets. The pilot projects are aimed at demonstration of greenhouse gas emission reduction advantages and cost saving benefits of energy efficient lighting technologies. The organization and implementation of pilot projects include the following stages: (i) signing Statement of Intent1 with a target municipality and any 3rd party interested to cooperate and co-finance implementation pilot projects or upgrade programs, (ii) evaluation and analysis of baseline and pilot parameters, e.g. illumination level of the streets; (iii) full replacement of existing inefficient lighting fixtures with new energy efficient LED-based ones along with implementation of required renovation works to ensure proper installation and operation; (iv) monitoring of the levels of illumination and energy consumption; (v) evaluation of cost savings and calculation of the annual savings to be transferred to the special account of the revolving fund; (vi) dissemination of the pilots’ achieved results. The Municipality of Goris requested UNDP project to study the existing municipal lighting system of the town to: (i) provide recommendations on energy efficient modernization of the system, and (ii) identify possibility of implementation of a pilot project on introduction of new energy efficient outdoor lighting technology on one (or more) of the municipal streets.

1 SoI is a framework document that sets scope and timing for cooperation between involved parties aimed at assessment of municipal lighting system, implementation of pilot projects and establishment of municipal revolving fund for financing energy efficient projects in municipal lighting sector.


2. Purpose of the monitoring missions In order to provide recommendations on improvement of the street lighting system as well as identify potential pilot projects, careful assessment of the existing situation (baseline parameters measurement) shall be performed. This approach implies collection of detailed information on the municipal street lighting system to assess overall performance and need for improvements. With this purpose the project’s monitoring team visited Goris on February and November 2015. The work of experts was assisted by Mr. Garegin Parsyan, the Municipal Architect and Head of Urban Development and Utility Department of Goris Municipality and Mr. Nelson Miraqyan, Senior Specialist of same department of Goris Municipality. The project team collected and analyzed information on technical and financial aspects of the municipal street lighting system as well as carried out monitoring (actual on-site measurements) of baseline parameters of the lighting systems (illumination level and uniformity) for a number of streets proposed by the municipality. Some selected photos of measurement process are introduced below. The present report summarizes the key findings and conclusions made based on the obtained information and collected data.

3. Description of the municipal lighting infrastructure Street lighting infrastructure Table 1: Currently illuminated municipal facilities N Facilities Number N Facilities Number 1 Streets 24 4 Monuments 1 2 Yards 10 5 Churches 2 3 Parks 1 6 Municipal buildings (Town Hall) 1

Table 2: The level of street illumination

Illumination Fully illuminated (100%)

Partially illuminated (60-70%)

Not illuminated (0%)

Number of streets 14 10 5 Share of streets 48% 35% 17%

Table 3: Information on number and types of poles, fixtures and lamps

N Poles Fixtures - ЖКУ Lamps

Type QTY Type QTY Type Power, W QTY 1 Metallic 850* Aluminum (USSR) 204 Mercury (OSRAM) 250 478 2 Wooden 107 Plastic (YUGUR) 553 Mercury (OMEGA) 250 374

3 Plastic (INTEL) 200 High-pressure sodium (HPS) 170 20

4 High-pressure sodium (HPS) 70 50

5 Light emitting diodes (LED) 60 35

Total 957 957 957 Note: *) 215 metallic poles were installed in 2012


Below some photos of typical ЖКУ-type fixtures as well as LED luminaries installed on Goris streets are introduced. Photo 1: Plastic and aluminum case fixtures and LED street light luminaries in Goris

Power consumption of the municipal lighting system is metered by the 99 electric double-tariff meters installed either in power substations or in distribution boxes. Table 4: Street lighting power consumption meter N Meter Number 1 “Mercuri” 12 2 CEM – 1 20 3 CO – 2 7 4 CO – U 446 21 5 CEM – 1B 9 6 CO – EE6705 2 7 CO – 5 3 8 CO – 2M2 13 9 Double-tariff meters (installed in 2012-2014) 12

Duration of system operation Average annual duration of street lighting system operation is 1755 hours. The seasonal duration of operation is represented below. • Summer (3 months): 3 hours per day (285 hours/year) • Winter (4 months): 6 hours per day (720 hours/year) • Spring and autumn (5 months): 5 hours per day (750 hours/year)


Capital and operation costs Payments against power consumption are made based on existing electricity tariff set by the Public Services Regulatory Commission of RA in August 2015.

• Day time tariff (from 07:00 to 23:00) – 48.78 AMD/kWh • Night time tariff (from 23:00 to 07:00) – 38.78 AMD/kWh

Table 5: Annual power consumption by the street illumination system and associated operational costs

Parameter 2012 2013 2014 Annual power consumption, kWh 328114 356420 370193 Annual energy costs, mln AMD 8.623 10.958 13.544 Annual operational costs, mln AMD including 2.3 2.3 2.3 Salary 0.7 0.7 0.7 Materials 1.6 1.6 1.6

All costs associated with operation and maintenance of the municipal lighting system are covered from the municipal budget only. However, in 2014 the Regional Administration of Syunik Marz provided financial support to the municipality to compensate almost 17% increase of electricity tariff in August 2014. The compensation was provided for the six-month period in 2014 after change of tariff. In 2012 the municipality jointly with Zangezur Copper Molybdenum Plant installed 250 new luminaires (some of them were installed on existing poles, whereas, the rest (majority) on newly installed poles). In 2013 the municipality installed 36 new poles and 180 luminaires in the area of the municipal park. Total cost of installation was 28 mln AMD (12 mln provided by the municipality and 16 mln provided by the Plant). Operation and maintenance of the system Before May 1, 2015, the municipal lighting system in Goris was operated by “Goris Tntesutyun” municipal company. However, in May 2015, based on competitive bidding HD Media Group LLC was contracted by the Municipality to perform the municipal lighting system operation services only. According to the contract, the new company receives fixed payment from the Municipality for ensuring proper operation of the street lighting system. One of the key requirements is timely replacement of damaged lamps and fixtures. Hence, the profit of the company directly depends on quantity and cost of replaced equipment: if the company procures quality equipment, frequency of replacements may be low and profits may emerge. On the other hand, if low quality equipment is procured, the company may incur losses through growing expenditure, even exceeding the Municipality’s allotment, due to the reiterating necessity to replace the damaged lamps. In such a way, incentive for installation of quality lamps and fixtures is set through the contract. At the same time, the company has nothing to do with payment for electricity consumption: electricity bills are still paid by the Municipality. Hence, the company has no direct interest in reducing power consumption (e.g. via improving energy efficacy of the system) because this has no influence on the company profit. Checking of technical conditions of the system and damage identifications are performed via daily observation of the street lighting system.


Commutation (switching on and off) of the street lighting systems is performed by means of time relays and photo elements installed into 34 control boxes. The control boxes have been provided by the Municipality of Vienne (a sister city of Goris in France). No remote control of supervision equipment is installed to control the street lighting system. Technical condition of the system The current street lighting infrastructure of Goris consists predominantly of outdated, inefficient and partially damaged poles, cables and luminaires installed in the Soviet period and some new equipment installed recently thanks to municipal and donor funding. Table 6: Technical condition of the street lighting system (1 – very poor and 5 very good)

Equipment Technical conditions Fixtures 3 and 5* Poles 2 and 5* Electricity meters 5 Cables and ditches 3 and 4

Note: score 5 is given to the recently installed equipment. Procurement of equipment Procurement of equipment necessary for operation and maintenance of the system is performed by the operating company. Procurement associated with installation of new lighting is performed by companies selected through tenders organized by the Municipality in accordance with the requirements of state procurement procedures. The bid with the lowest proposed price wins a tender. Development plans By the end of 2015 the municipality is planning to introduce illumination systems (about 120 luminaires) on the following streets: (1) Mashtots; (2) Tumanyan and (3) Satyan. Also 3 yards and 1 monument will be illuminated within the same period. Audit of the system No technical or energy audit of the municipal lighting system has been performed so far.

4. Description of proposed pilot streets Two streets were proposed by the municipality for inclusion into the pilots under the Project. Below information on baseline parameters and recommended energy efficient improvements for the two streets are described in details. Noteworthy, the final decision on implementation of pilot projects will be made by the project management based on available information and in line with the project objectives. Syunik and Qristaphor Streets are interstate roads that are mainly passed by cars and trucks travelling from Iran to Armenia and back (part of M2 interstate highway). Qristaphor street is continuation of Syunik street. The streets were illuminated only recently, in 2014, using 250 W mercury lamps (an outdated technology of low energy efficiency). Given relatively high intensity of traffic and importance of the streets their illumination period is the longest in the city. Hence, inclusion of the streets into the pilot scheme may ensure maximum energy saving in comparison with other considered options.


Photo 2: Syunik Street lighting system and day and night time Mashtots Street is the main street that passes the historical part of the city. A number of hotels, stores etc. are located on the street. The street is very popular with tourists and from that perspective it represents interest for inclusion into the pilot scheme. However, the current technical condition of the street lighting system is very poor. Majority of fixtures are old and even damaged with no lamps inside. Some poles are missing or damaged.

Photo 3: Views of Mashtots Street The street is illuminated very poorly. Given the baseline illumination level of the street it is hard to expect substantial (if any) energy savings from implementation of the pilot project. Thus, any project proposal on energy efficient modernization of the lighting system for this particular street may be considered in combination with improvements of the existing infrastructure i.e. installation of missing pole, fixing of damaged poles and fixtures, check and rehabilitation (if needed) of the feeding system and other works. This means that introduction of modern energy efficient LED based illumination system on this street will


be associated with additional expenses for improvement of existing infrastructure that shall be co-financed by the municipality. In addition of the above mentioned 3 streets the expert team also visited Azatutyan street where old HPS street lights had already been replaced with LED luminaries by other program. During the visit the team organized measurements of illumination level and uniformity.

Figure 1: Allocation of Mashtots, Syunik, Qristaphor and Ankakhutyan streets on map

Table 7: The characteristics of the pilot streets

N Parameters Unit of Measure

Pilot Streets Syunik Mashtots Qristaphor

1. Length km 2.9 2 0.85 2. Number of poles pcs 78 55 21 3. Type of fixtures Aluminum and plastic (ЖКУ) 4. Type of bulb Mercury (OSRAM) 5. Power of existing luminaire W 250 6. Number of luminaires pcs 78 48* 21 7. Average distance between poles m 37 37** 40 8. Location of poles One-sided 9. Height of poles m 8 8 8

10. Height of luminaires suspension m 7.5 9.5 7.5 11. Arms angle of lean to horizon ° 10 - 15 12. Arm overhang m 1 1 1 13. Location of arms One per pole 14. Diameter of arms mm 48 & 42 42 42 15. Quantity of luminaires on the pole pcs 1 1 1 16. Class of the street (СП52.13330.2011) В1 В2 B1 17. Width of the street m 10 8 10

18. Number of traffic lanes in each direction 1 1 1

19. Average distance from street curb m 1 1 1 Note: *) total number of poles is 55; however only 48 poles are equipped with luminaires

**) average distance is calculated considering also 7 existing poles without fixtures.

Mashtots Street

Syunik Street

Ankakhutyan Street

Qristaphor Street


5. Measuring of luminance level for three streets The streets proposed by the municipality were monitored by the project team in night time in order to measure the luminance level of the street surface. Measurements were made using a UA 1010BS type lux meter and pedometer and GPS device in accordance with the methodology used by the project for other monitoring missions. Photo 4: Measurement of street illumination level and distances between poles

Particularly, measurements of street surface luminance level were performed between the poles for the following three zones: (i) along the street side where lighting poles are installed; (ii) along the center of the street; (iii) along the street side opposite to the lighting poles. Measurements were performed once per each 3 - 4 meters. So depending on a street length, from 21 to 36 measurement points was selected. The measurement scheme with indication of above-described 3 zones and measurement points is introduced in the below drawing.

Figure 2: The street Illuminance level measurement scheme The results of measurements are summarizes in the tables below.

Measurement points

Lighting pole


Table 8: The results of measurements in Syunik Street of Goris town City: GORIS

Street: Syunik LUMINAIRE 250W Mercury Height of poles: 8 m

Average distance between two poles: 32 m

Street width:10 m Date&time: 09.02.2015

at 21:25 Number of lines: 2

ZONE 3 4.8 4.6 4.4 3.0 2.5 1.8 1.6 1.5 1.9 2.5 3.7 4.7 ZONE 2 9.6 8.3 5.7 3.5 2.1 1.9 2.0 2.4 3.4 5.7 8.4 9.3 ZONE 1 11.0 11.0 7.5 4.0 2.7 2.0 2.0 2.4 3.6 6.4 12.0 14.0

Poles: # 29 # 30 GPS coor-dinates:

39030.907 046020.081 Eav = 4.94 lx , Uo = 0.30, UI = 0.35 39030.891

046020.099

Table 9: The results of measurements in Ankakhutyan Street of Goris town

Table 10: The results of measurements in Mashtots Street of Goris town City: Street: Mashtots LUMINAIRE

70W HPS Height of poles 8 m

Distance between two poles: 23 m

GORIS Street width: 8 m Date/time: 09.02.2015 at 22:50 Number of lines: 2

ZONE 3 2.0 1.8 1.7 1.5 1.8 2.0 2.3 ZONE 2 9.0 7.1 6.0 6.0 6.8 7.8 9.4 ZONE 1 16.6 15.6 6.8 5.3 6.2 15.9 20.7

Poles: # 632 # 633 GPS coordinates:

390303.20 046020.710 Eav = 7.25 lx , Uo = 0.28, UI = 0.10 39030.309

046020.717 Table 11: The results of measurements in Qristaphor Street of Goris town

City: Street: Ankakhutyan

LUMINAIRE LED Height of poles: 8 m

Average distance between two poles: 36 m

GORIS Street width: 13 m Date&time: 09.02.2015

at 22:00 Number of lines: 4

ZONE 3 3.8 3.8 2.5 3.3 3.1 3.2 2.6 3.0 3.5 3.8 ZONE 2 10.6 8.2 5.5 7.0 6.0 4.7 3.4 5.0 7.6 8.3 ZONE 1 33.4 17.8 12.8 6.0 5.0 4.2 5.3 7.9 11.0 19.6

Poles: # 464 # 465 GPS coor-dinates:

39030.884 046020.202 Eav = 7.40 lx , Uo = 0.35, UI = 0.08 39030.865

046020218

City: Street: Qristaphor LUMINAIRE 250W Mercury

Height of poles: 8 m Average distance between two poles:

40 m

GORIS Street width: 10 m Date&time: 06.11.2015 at

21:25 Number of lines: 2

ZONE 3 3.5 3 2 2 3 1.5 1.9 2.5 2.5 5 ZONE 2 9 7 4 3 2.5 2.4 3.4 5.7 7.5 9.3 ZONE 1 10 9 6 3 3.5 2.4 3.6 6.4 10 12

Poles: # 5 # 6 GPS coor-dinates: Eav = 4.89 lx , Uo = 0.31, UI = 0.19


Table 12: Results of street illumination level measurements in Goris town

N Street Class Average luminance, (Eav, Lx)

Total uniformity (Uo)

Longitudinal uniformity (Ul)

Required Actual Required Actual Required Actual

1 Syunik В1 15 4.9 0.4 0.30 0.60 0.35

2 Qristaphor B1 15 4.9 0.4 0.31 0.60 0.19

3 Ankakhutyan В2 10 7.4 0.4 0.35 0.50 0.07

4 Mashtots В2 10 7.3 0.4 0.28 0.50 0.10

The results of the measurements on the pilot streets show that in all monitored streets the existing luminance level is well below the required level set by the norms. 6. Proposal on the pilot street lighting systems improvement As per request of the Goris Municipality, proposals for street lighting system improvement are made for Syunik, Mashtots and Qristaphor streets. Syunik and Qristaphor Streets Calculations performed via DIALux software showed that proper luminance of the Syunik and Qristaphor streets can be ensured via installation of LED based street lighting fixtures with the capacity of 110W (14.100 lumen). The Municipality of Goris proposed to install additional 12 lighting fixtures that shall be placed on the beginning of Syunik street (section from Artsakh and Yerevanyan street intersection). Accordingly these lighting poles will be installed by the municipality. To ensure proper illumination of Qristaphor street the project expert team proposed to install an additional pole between poles N7 and N8 because distance between there poles is very long (83m). In such a way within the scope of the proposed pilot project the project will provide the municipality of Goris with 112 luminaries. The municipality in its turn shall install additional 13 poles. Along with this the municipality shall ensure renovation of damaged poles as well as adjust angle and length of arms in line with the project team recommendations. Table 13: Key parameters of the baseline and pilot scenarios for Syunik and Qristaphor Streets of Goris town

Parameters Unit Baseline (existing situation)

Project (after

modernization) Benefits

Type of lamps and fixtures - Mercury LED Modernization Total number of fixtures pcs 99 112 Power of a single fixture W 2851 110 175 (62%) Lamp luminous flux Lm 56002 14100 8500 Installed capacity of the system kW 28.2 12.3 15.9 Annual power consumption MWh 49.5 21.6 27.9 Annual energy costs3 USD 4980 2174.6 2805.7 Annual O&M costs USD 5004 - 500 GHG emission5 tCO2 22 9.6 12.4 Illuminance level (norm - 10) Lx 4.9 15 10.1


Cost of one luminary (with transport) USD 280 Total cost of new LED fixtures USD - 31360 -

Note: 1) total capacity with ignitor 2) data from www.osram.com for HWL 250 W 225 V E40 type high intensity discharge lamp 3) AMD/USD rate: 485 4) O&M costs conditionally estimated as 10% of annual energy costs 5) Greed emission factor: 0.444 kg CO2/kWh The key parameters of the proposed pilot project are introduced in the table 14. Table 14: Key parameters and benefits of the proposed pilot project for the identified two streets

N Description Unit Syunik Qristaphor 1 Average width of streets m 10 2 Height of poles m 8

3 Height of fixture (photometric center height) m 9

4 Average distance between poles (m) m 37 40 5 Location of poles one sided 6 Arms angle to horizon degree 15 7 Arms overhang m 1.7 8 Luminaire number per pole pc 1 9 Luminaire power W 110 10 Illumination flux lm 14100 11 Average Illumination level (norm) cd/m2 0.89 (0.8) 0.82 (0.8) 12 Average uniformity (Uo) 0.50 (0.40) 0.47 (0.40) 13 Average longitudinal uniformity (UI) 0.71 (0.60) 0.66 (0.60) 14 Average horizontal illuminance (Eav) lx 15 15 15 Cost of one luminary (with transport) USD 280

16 Total number of luminaires to be replaced pc 90 22

17 Total procurement costs USD 25200 6160 Key outcomes of the proposed pilot

18 Annual power consumption reduction MWh 21.6 6.3

19 Annual energy costs saving USD 2176.4 629.3 20 GHG emission reduction tCO2 9.6 2.8 21 Simple payback period Year 9.5

Taking into consideration that fact that both Syunik and Qristaphor streets are main streets of the Goris municipality as well as interstate roads for Armenian – IRR traffic, the project expert team proposes to select these streets for implementation of the proposed pilot project. Mashtots Street Calculations performed via DIALux software showed that proper luminance of the Mashtots street with the current distance between poles of 37 m can be ensured via installation of LED based street lighting fixtures with the capacity of 100W (11500 lumen). This proposal implies fixing of the damaged poles and fixtures, to be executed by the municipality on its own expense.

http://www.osram.com/


However, this option does not seem to be an optimal solution both in terms of efficiency and costs. The project recommends reconstruction of the infrastructure of the street lighting system aimed to reduce the distance between lighting poles from 37 m to 30 meters. This implies replacement of existing 55 old lighting poles with 66 new poles of the same height. In the below tables key parameters of the baseline and the proposed pilot scenarios are presented. The street luminance level measurement was carried out at the section of the street that is illuminated with 70W HPS lamps, as per request of the municipality. However, the energy efficient modernization pilot could be implemented on the section illuminated with 250W HPS sodium lamps only. Hence, all estimations are made in comparison with 250W HPS based lighting system. Unfortunately, because the selected section was not illuminated on the measurement day, no data on Illuminance level of that section of the street exists, and exact quantitative comparison of luminance level between baseline and pilot systems is not possible. Using DIALux software, estimates for a new system were performed in accordance with indicators set forth by the effective norms. Table 15: Key parameters of the baseline and pilot scenarios for Mashtots Street of Goris town (for comparison, a luminaire of the same town was used in the estimations)

Parameter Unit Baseline (existing situation)

Project (after

modernization) Benefits

Type of lamps and fixtures - Mercury LED Modernization Number of fixtures pcs 66 66 Power of a single fixture W 2851 100 185 (65%) Lamp luminous flux Lm 56002 11500 5900 Installed capacity of the system kW 18.81 6.6 12.21 Annual power consumption MWh 33.0 11.6 21.4 Annual energy costs3 USD 3320 1165 2155 Annual O&M costs USD 3304 - 330 GHG emission tCO2 14.7 5.1 9.5 Cost of one luminary (with transport) USD 250

Total cost of new LED fixtures USD - 16500 - Simple pay back period year 7.4

Note: 1) total capacity with ignitor 2) data from www.osram.com for HWL 250 W 225 V E40 type high intensity discharge lamp 3) AMD/USD rate: 485 4) O&M costs conditionally estimated as 10% of annual energy costs 7. Recommendations on the proposed pilot project Syunik and Qristaphor streets are proposed as preferable option for the pilot accounting better condition of its lighting infrastructure, higher importance of the street and longer hours of its traffic and low efficiency of luminaries installed. The replacement of luminaries can ensure higher GHG emission reduction than in other streets. As mentioned in Section 6 the Municipality of Goris proposed to install additional 12 lighting poles that shall be placed on the beginning of Syunik street. Also additional pole will be installed on Qristaphor street between poles N7 and N8. This is needed to ensure

http://www.osram.com/


proper illumination in this section because actual distance between these poles is very high (83m). Hence, within the scope of the proposed pilot project GUL project will provide the municipality of Goris with 112 luminaries. The municipality in its turn shall install additional 13 poles. Along with this the municipality shall ensure renovation of damaged poles as well as adjust angle and length of arms. All necessary instructions regarding dimensions and proper installation of arms will be developed and provided by the project after selection of luminaries՛ supply company. Lighting system of Mashtots street needs improvement that will require co-financing from the municipal budget. Goris town municipality taking into account the street’s importance, including that for tourism, is willing to implement recommended improvements, i.e. installation of new poles and renovation of the feeding system, if the street is selected as a pilot one by UNDP-GEF project. 8. Improvement of the whole municipal lighting system Taking into consideration the results of measurements and evaluations for the above mentioned two pilot streets as well as baseline characteristics of the municipal street lighting system of Goris, the project team has developed recommendations on introduction of new lighting technologies to support the town municipality in decision-making as per achieving energy and costs saving. The proposed measures will contribute to reduction of GHG emissions in the lighting sector of Goris. It shall be noted that recommendations and assessment provided in this section are general and that more detailed analysis will be needed to define more precisely particular energy efficiency action for each street lighting system. In consultation with the technical team of the Goris Municipality it has been conditionally decided that the average width of all illuminated streets (i.e. 24 streets excluding 2 pilot streets) is 10 m. Also, for the purpose of assessment, it was decided that the height of lighting poles is 8 m and the average distance between poles is 35 m. Based on this basic data the expert team has identified two options i.e. LED and HPS based street luminaires that may be used to replace the existing 858 pieces of HPS, mercury-vapor and low quality LED street lighting lamps/luminaires.

Table 16: Key parameters of the proposed two options, their expected costs and benefits

N Description Unit LED Luminaire manufacturer OPTION A OPTION B*

1 Average width of streets m 10 10 2 Height of poles (photometric center height) m 8 8 3 Average distance between poles (m) m 35 35 4 Location of poles one sided one sided 5 Arms angle to horizon degree 10 10 6 Arms overhang m 1 1 7 Luminaire number per pole pc 1 1 8 Luminaire power W 81 90** 9 Illumination flux lm 8900 8387 10 Average Illumination level cd/m2 0.96 0.86 11 Average uniformity (Uo) 0.42 0.42 12 Average longitudinal uniformity (UI) 0.6 0.83


13 Average cost of one luminaire USD 240 180 14 Total number of luminaires to be replaced pc 858 858 15 Annual power consumption reduction MWh 272.2 258.6 16 Annual energy costs saving USD 27372 26009 17 Annual O&M costs USD 0 681 18 GHG emission reduction tCO2 120.8 114.8 19 Total procurement costs USD 205920 154440 20 Payback period year 6.6 5.3

Note: *) Option B – Quality fixture equipped with 70W HPS lamp **) Total capacity of luminary with igniter

As it is seen from the above table the system’s modernization is envisaged via installation of modern energy efficient LED (240 USD) or HPS based (180 USD) luminaires. Consequently, total investment from 15500 to 20600 USD may be requested to ensure replacement of all luminaires. Simple pay-back period for these two options varied from 5 to 7 years. More define estimations can be made only after detailed monitoring and measurement of each of streets. 9. Indoor lighting system of Goris Preliminary survey of the information on indoor lighting, e.g., in town hall, kindergartens, etc., shows that in the majority of such structures CFL or tube-type fluorescent lamps are used ensuring illumination of average quality and certain energy saving. Taking into consideration limited duration of operation of indoor illumination system and relatively low costs of these type of lamps, replacement of the existing system with new LED based lamps will not be economically justified. Application of LED technology may be reasonable only in case of long duration of indoor lighting system operation. The Municipality of Goris may introduce a list of municipal structures for which the project expert team may propose technical solution based on LED technology. Meanwhile it is suggested to carry out measurement for evaluation of illumination level in a number of municipal buildings where CFL and fluorescent lamps are used to understand potential for illumination improvement. 10. Development program for architectural lighting of Goris Goris has a number of perspective programs for tourism promotion. The city has been included into “Smart City” program of UNECE and is planning to develop its infrastructures in line with smart city concept. Together with the World Bank the city is planning to introduce architectural illumination of buildings as well as outdoor illumination of parks and gardens within the scope of tourism promotion efforts. The project team discussed perfectives of cooperation with the municipal administration in this field as well. As a result the project confirmed its readiness to provide technical and financial (co-financing) support to the municipality for proper implementation of architectural lighting projects. Particularly, the project team can support with development of light design and technical requirements for selection and procurement of quality illumination systems etc. as well as during installation and monitoring of the equipment performance.


Photo 5: Lighting system of the central park of Goris and one of the playgrounds

report on goris town street lighting system · four specific activities: (i) organization of energy...

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