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Lighting without emissions.


Introducing Scotia SunMast™. The first grid-connected solar light for zero-emission street lighting. Feeds green electricity into the grid Cuts emissions and generates income Fail-safe system: works without batteries Can be used with any luminaire or light source Fully compliant with EN40 standards


Computer generated image depicting Scotia SunMast ™


What is the SunMast™? The Scotia SunMast™ is a solar-powered outdoor lighting column designed to help cities and businesses achieve the environmental goal of zero-emission street lighting. The SunMast™ uses PV solar cells integrated in the body of the mast to generate renewable energy and provide a source of revenue to offset the cost of electricity. The system supplies power to the grid during the day and imports what it needs at night, creating the potential for zero-energy lighting or a net energy gain.

Financial benefits Enables clients to derive revenue via solar feed-in tariffs Reduces operational cost of street lighting Helps to alleviate future energy cost increases

Environmental benefits Reduces the carbon footprint of street lighting by 80-100% Helps businesses and local authorities meet carbon reduction targets

Social benefits Enables roads to be lit without compromise to safety or quality Optimises existing infrastructure, avoids conflicts with other land uses Empowers communities to generate their own energy Inconspicuous energy solution, blends into street environment

www.scotialight.com

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How the SunMast™ works. Connected to the grid, the Scotia SunMast™ is the only solar lighting solution suitable for illuminating roads and highways in line with European norms and regulations.

Power station by day. The SunMast™ uses a new type of PV solar cell especially developed for lower-light applications and integration into vertical structures. The cells don’t require direct sunlight and are designed to work well under cloud cover.

Daylight strikes the photovoltaic cells and is converted to electricity.

Even in the UK and Northern Europe, a SunMast™ has the potential to produce more energy than it requires for lighting.

An inverter in the base of the mast converts the electricity from DC to AC for export to the grid. There are no batteries – all power is exported.

Electricity grid

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Why not use batteries? The SunMast™ doesn’t use batteries because of the demand for a fail-safe and compliant road lighting solution. Battery-powered systems struggle to store enough power to keep a street light running through the night, and require regular replacement since they have a limited lifetime. By connecting to the grid, the SunMast™ overcomes the challenge of storing power and ensures reliable operation throughout the night.

Street light by night. A grid-connected system is essentially two different systems with no direct connection between the PV panels and the lighting components. None of the power generated by the SunMast™ is used by the light source directly.

Power for lighting is imported from the grid in the normal way.

Electricity grid

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The features.

Fully compatible system Can be used with any type of luminaire or light source (e.g. HID, CFL or LEDs).

High energy yield High-performance PVs work under cloud cover.

All weather protection

Upgradeable system

IP66 rated, operational in temperatures from –25°C to +60°C.

PV panels can be replaced as technology develops.

Fully norm compliant

Self-cleaning

Designed according to EN40 / BS40. Vandalism IK class 8, EN / BS 50102. MCS accredited solar panels. G83 certified inverter included.

Vertical design allows dirt and debris to wash off during rainfall.

Performance warranty

Remote monitoring and lighting control system available on request.

Accurate monitoring of energy balance

20 years on solar components.

No batteries Fail-safe, grid-connected system.

Standard installation All PV panels, cables and inverters pre-installed within the mast. No extra column installation equipment is required.

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Computer generated image depicting Scotia SunMast ™


The performance. Potential for zero-energy street lighting Ove

86% r

Example: London, UK SunMast™ WP480

us

Electricity produced per year:

0

50

of e

nerg

regeed can by nera e ted

218* kWh

Electricity consumed per year:

253† kWh

100

200

150

250

300

350

kWh per year

106 % Ove

r

Example: Munich, Germany SunMast™ WP480

u

Electricity produced per year:

Electricity consumed per year: 0

50

100

of e

ner

g s regeed can by ne r e at ed

150

270* kWh

253† kWh 200

250

300

350

kWh per year

134 % Ove

r

of use energy rege d can b ne e

Example: Rome, Italy SunMast™ WP480

rate

d

Electricity produced per year:

Electricity consumed per year: 0

50

100

150

340* kWh

253† kWh 200

250

300

350

kWh per year

Assumptions * Calculation based on an 8.8m Scotia SunMast™ WP480 installed in an unshaded, south-facing location † Electricity consumption based on the following assumptions: lamp wattage: 90W; burn hours/day: 11; dimming factor: 30%

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SunMast™ annual performance per city by mast height

12.2m

SunMast™ WP720 Height: 12.2m Power (Wp): 720

10.5m

SunMast™ WP600 Height: 10.5m Power (Wp): 600

8.8m

SunMast™ WP480 Height: 8.8m Power (Wp): 480

London, UK

C0

2

avo

C0

id

189 ed p/a kg

SunMast™ WP720

2

avo

id

157 ed p/a kg

*

SunMast™ WP600

*

C0

2

avo

ide

124 d p/a* kg

SunMast™ WP480

Europe

kWh

kWh

kWh

London

332

276

218

Berlin

365

304

241

Helsinki

376

314

249

Copenhagen

378

314

251

Paris

383

319

253

Munich

408

340

270

Milan

421

350

278

Rome

511

427

340

Madrid

512

428

341

Middle East

kWh

kWh

kWh

Kuwait

526

444

354

Doha

535

449

358

Dubai

543

456

363

Cairo

564

468

373

* Based on standard kWh to kg CO2 conversion factor of 0.568

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Case study

Bella Center P5 Car Park, Copenhagen. Scotia put its solar-powered outdoor lighting columns under the scrutiny of some of the world’s leading environmentalists at the Copenhagen Climate Conference, to demonstrate the feasibility of emissions-free lighting even at northern latitudes.

_ Client: Bella Center _ Lighting design: Scotia ApS _ Luminaire design: 3XN Architects _ Luminaire manufacture: EWO _ Engineering: Grontmij Carl Bro

The project was conceived to support the Bella Center in its efforts to reduce its carbon footprint in the run up to the UN climate conference, held in Copenhagen December 2009. The goal was to provide Scandinavia’s largest conference centre with an attractive, well-lit outdoor environment – but without contributing any carbon emissions. A total of 7 SunMast™ WP480s were used each able to generate 251 kWh per year and fitted with two 60W LED luminaires. The result is a fully compliant lighting system that generates more power than it consumes with a reduction in CO2 emissions of 1 tonne per year.

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“The benefits of solar power are no longer limited by geography or climate.”

Total annual yield for project:

Total annual consumption: 0

200

400

600

800

1000

1200

1757 kWh

1687 kWh 1600

1800

kWh per year

Energy production

Energy consumption

SunMast™ WP480 Annual yield per mast: 251 kWh No. of masts in project: 7

Lamp type: 2 × 60W LED No. of hours ON per day: 5.5 Annual electricity consumed per mast: 241 kWh

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Frequently asked questions. Does it work in cloud or low light conditions? Yes. The cells in the masts are a new kind of low-light sensitive PV cells that don’t require direct sunlight, and in fact work well under cloud cover. It is possible for a SunMast™ to generate all the energy needs of a streetlight – even in northern Europe. Does the system require batteries? No, the system is connected to the national power grid. At night, when the cells in the mast are not generating energy, electricity is bought from the utility company in the normal way. By day, all energy is exported and sold to the grid. How often do the solar panels need cleaning? Due to the vertical positioning of the panels, normal rainfall prevents the accumulation of dirt and debris. Why not use batteries? We have opted not to use batteries because of the demand for a fail-safe and compliant road lighting solution. Battery-powered systems struggle to store enough power to keep a street light running through the night, and require regular replacement since they have a limited lifetime. By connecting to the grid, the SunMast™ overcomes the challenge of storing power and ensures reliable operation throughout the night. Do the solar panels actually power the lights? No. A grid-connected system is essentially two different systems. There is no direct connection between the PV system and the lamp. None of the energy generated is directly used by the light source. Can power be generated by the east and west faces? Yes. Situated for example in London, the east and west faces each produce around 75% of the south face, so combined, the east and west faces generate 50% more energy than the south face alone. What sort of projects are suitable for SunMast™ installations? The SunMast™ is intended for use on roads and highways. The most important aspect to consider is the location of the site. Solar masts must receive as much light as possible. The best location for solar PV is in exposed areas. Shadows cast by trees and neighbouring buildings must be avoided. Can the mast generate more electricity than the lamp requires? It depends. The electricity produced by the solar cells is a way of compensating for the electricity that the lamp consumes. Whether it does so partially or completely depends on the application and what steps are taken to minimize energy consumption. But with the right use of lamps and controls, it is quite possible to achieve a net gain of electricity. Is the SunMast™ complicated to install? No, the SunMast™ is installed in the same way as other non-solar lighting masts. And electrical installation follows the same procedure as other solar installations. How long can I earn money on a SunMast™ system? A FiT period is guaranteed for a period of up to 25 years in most countries.

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Does the streetlight conform to road norms and standards? Yes. The SunMast™ is tested against EN40 norms for metal masts in Europe. Will it work in winter? Yes. The vertical placement of PV panels is adapted to low altitude sunlight, and even if there are only a few hours of daylight in the wintertime, the mast will still produce energy. How much electricity will a mast generate? The exact amount varies according to the height of the mast as well as factors such as latitude, orientation, weather, ambient temperature and even the proximity of reflective materials such as water, glass or snow. Scotia provides detailed analysis for projects in your area. Will it work in any environment? The mast is designed to function in all weathers including temperatures of up to 60°C. Wind loading issues are avoided by integrating the PVs into a streamlined vertical design, with no top-mounted panels. The system is IP66 rated and protected against impact and abrasion. How can I earn money on exporting electricity? Earning money on solar electricity is structured differently from country to country. In Europe a much used system is the feed-in tariff (FiT) system where producers of solar electricity are guaranteed a fixed price per kWh of electricity fed back into the grid under a multiyear contract. As the masts are connected to the grid wouldn’t it be better to centralise the PVs in a single solar installation? That is an option, but by adding PV systems to light columns we make use of structures which are already in place. The lighting columns serve a double purpose. In this way, installation costs are kept to a minimum. You could call a SunMast™ a distributed small scale BIPV system. Is it profitable? How much more expensive is a SunMast™ than a conventional mast? A SunMast™ is about double the price of a conventional streetlight. However, the SunMast™ allows you to benefit from feed-in tariffs. That means the PV system can pay for itself within 8-15 years depending on which country the system is installed. The remaining part of the FiT period will provide profits that will go towards the cost of the streetlight itself. And, by adding lighting controls to the system, further savings can be made on the electricity consumption benefitting the overall system economy. Don’t PV systems generate less energy than was used for their production? No. This is a myth. After approximately 1.5 to 3 years, a PV system will have generated as much energy as was needed to produce and install all its components. Over a PV system’s lifetime of more than 30 years, it will produce far more energy than was used to create it. How is the mast protected against vandalism? The bottom 2m of the SunMast™ are without panels to protect them from graffiti. All solar panels are laminated with toughened safety glass and are designed to withstand mechanical impact in accordance with the requirements of EN/IEC 61215 and EN/IEC 62262 IK08. To avoid theft, the panels are glued to the mast and cannot be removed without using special tools.

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About Scotia. Scotia is a Danish-based company that helps cities and businesses achieve the environmental goal of zero-emission street lighting. We design and supply grid-tied, solar streetlight systems that generate renewable energy as part of the urban environment, providing cities with a source of revenue to offset the rising cost of electricity. Based in Denmark since 2009, Scotia has established operations in the UK under the name Scotia Light Ltd in partnership with KN Group, one of the leading providers of renewable energy and engineering services to the UK and Republic of Ireland.


Head office: Scotia ApS Mejlgade 48C 8000 Aarhus C Denmark T: +45 3152 1379

UK office: Scotia Light Ltd 4 Chancerygate Business Centre South Ruislip Middlesex HA4 0JA T: +44 (0)208 845 9292

E: info@scotialight.com www.scotialight.com

Represented by:

Brochure design: Frontmedia Photography: © Adam Mørk © 2011 Scotia ApS. All rights reserved. Specifications are subject to change without notice.

This document has been digitally printed on Revive 100 Premium Uncoated paper which is made of 100% post consumer reclaimed material. The paper mill is certified to the ISO14001 environmental management standard.


Scotia SunMast