MADRID

onyxsolar

ROI_CURTAIN_WALL_MADRID_CRYSTALLINE

MADRID

PAYBACK

PERIOD

at less than

IRR

Annual Retutn

ENERGY

COST

using Onyx Solar

4 years 29% 0,04 €


INTRODUCTION

This document is feasibility report of the Onyx Solar Low-e photovoltaic glass for its integration in the four façades and

the skylight of a building of 3.242 SQM.

This is the first and only glass in the market that generates free electricity for your building while providing thermal and

acoustical insulation, day lighting and sun control, as required by design. This combination of active and passive

properties leads to outstanding return on the investments. The low-e photovoltaic glass is the only architectural glass

that pays itself due to the energy savings derived from a high performing building envelope plus the electricity

generated by the glass, which is used for self-consumption. With Onyx Solar photovoltaic glass you will benefit from

having the same rate of energy cost for the building despite the continuing increase in the local electricity price. In

fact, you are ensuring your energy cost at less than 0,04 € per kWh over the next 30 years.

2

The following figures and graphs reflect the average reduction in energy demand and cost per square meter of

Onyx Solar glass installed. This is a comparison between a conventional Insulated Glass Unit (clear glass/air

chamber/clear glass) and our Photovoltaic Insulated Glass Unit, which provides a very low-risk investment with a

great yield during the entire lifetime of the building.

Review the document and Review the document and see how much you can save in your building energy cost.

www.onyxsolar.com

LOW-E PHOTOVOLTAIC GLASS. AWARDED AS THE MOST INNOVATIVE GLASS PRODUCT OF 2015


ENERGY SAVINGS

ENERGY COST WITH ONYX SOLAR GLASS (EUR/kWh) 0,04 €

Electricity cost guaranteed for the next 30 years.

REDUCTION IN HVAC ENERGY DEMAND (%) 102%

M aximum reduction in HVAC energy demand in this city.

AVERAGE REDUCTION OF ENERGY DEMAND (EUR/sqm) 1.091 €

Average reduction of energy demand per square foot of Glass from energy generation and the HVAC savings in 30 years.

RETURN ON INVESTMENT

IRR (30 years) (%) 29%

3

Internal Rate of Return: average annual return during the first 30 years of the investment.

IRR (20 years) (%) 29%

Internal Rate of Return: average annual return during the first 20 years of the investment.

IRR (10 years) (%) 26%

Internal Rate of Return: average annual return during the first 10 years of the investment.

PAYBACK PERIOD (years) 4

Time required for the return on the investment.

TIMES THE INVESTMENT (period of 30 years) (times) 11

Number of times that the amount invested is received during the invesment period of 30 years. (Average Reduction of Energy

Demand /Investment)

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LOW-E PHOTOVOLTAIC GLASS. AWARDED AS THE MOST INNOVATIVE GLASS PRODUCT OF 2015


Constructive Solution:

CURTAIN WALL + SKYLIGHT

Location:

MADRID

Total Construction Area (sq.meter) 3.242

Total Glass Surface Area (sq.meter) 2.464

Windows to Wall Ratio 70%

REDUCTION IN ENERGY DEMAND

Energy demand of the building in HVAC

without Onyx Solar PV glass in 30 Years

(Average increase of energy price until 2020: 8,18%)

(Average increase of energy from 2020: 1%)

TOTAL REDUCTION OF ENERGY DEMAND

IN 30 YEARS

PHOTOVOLTAIC ENERGY

= +

PRODUCTION

IN 30 YEARS

ENERGY SAVINGS INDUCED

BY THERMAL ENVELOPE

IN 30 YEARS

3.644.540 € 9.677.100 kWh

GLASS CONFIGURATION

T otal reduction of energy demand due to the generation Amount of Energy that our glass produce Amount of Energy that our glass save

of energy and the savings in HVAC

due to its photovoltaic properties

due to its passive properties

(EUR) (kWh) % (EUR) (kWh) (EUR) (kWh)

4

1

Clear glass + 12mm air chamber + clear glass

0 0 0% 0 0 0 0

Monocrystalline silicon photovoltaic cells with a

2

transparency degree of 38% + 12mm air chamber + clear

2.687.011 € 7.134.637 74% 1.944.251 € 5.162.437 742.760 € 1.972.200

glass

Monocrystalline silicon photovoltaic cells with a

3

transparency degree of 38% + 12mm argon chamber + lowe

2.858.295 € 7.589.437 78% 1.944.251 € 5.162.437 914.044 € 2.427.000

glass

= +

Monocrystalline silicon photovoltaic cells with a

4

transparency degree of 15% + 12mm air chamber + clear

3.454.644 € 9.172.882 95% 2.662.397 € 7.069.282 792.247 € 2.103.600

glass

Monocrystalline silicon photovoltaic cells with a

5

transparency degree of 15% +12mm argon chamber + lowe

glass

3.707.165 € 9.843.382 102% 2.662.397 € 7.069.282 1.044.767 € 2.774.100

* T otal reduction of energy demand/Energy demand of the building in HVAC without Onyx Solar

Please visit our Technical Guide for more information about other glass configurations available and our complete products range

www.onyxsolar.com

LOW-E PHOTOVOLTAIC GLASS. AWARDED AS THE MOST INNOVATIVE GLASS PRODUCT OF 2015


4.000.000 €

3.500.000 €

TOTAL REDUCTION IN ENERGY DEMAND (EUR)

PHOTOVOLTAIC ENERGY PRODUCTION + ENERGY SAVINGS INDUCED BY THERMAL ENVELOPE

3.707.165 €

3.454.644 €

3.000.000 €

2.500.000 €

2.000.000 €

NO

REDUCTION

IN ENERGY

DEMAND

2.687.011 €

Energy Savings

2.858.295 €

Energy Savings

Energy Savings

Energy Savings

5

1.500.000 €

PV Energy Production

PV Energy Production

1.000.000 €

PV Energy Production

PV Energy Production

500.000 €

0 €

Clear Glass + Air Chamber +

Clear Glass

38% Semi-Transparent PV Glass

+ Air Chamber + Clear Glass

PV Energy Production

38% Semi-Transparent PV Glass

+ Argon Chamber + Low-e

Glass

Energy Savings

15% Transparent PV Glass + Air

Chamber + Clear Glass

15% Transparent PV Glass +

Argon Chamber + Low-e Glass

www.onyxsolar.com

LOW-E PHOTOVOLTAIC GLASS. AWARDED AS THE MOST INNOVATIVE GLASS PRODUCT OF 2015


REDUCTION IN HVAC ENERGY DEMAND (%)

120%

100%

80%

60%

NO

REDUCTION

IN HVAC

ENERGY

DEMAND

74%

78%

95%

102%

6

40%

20%

0%

Clear Glass + Air Chamber +

Clear Glass

38% Semi-Transparent PV Glass

+ Air Chamber + Clear Glass

38% Semi-Transparent PV Glass

+ Argon Chamber + Low-e

Glass

15% Transparent PV Glass + Air

Chamber + Clear Glass

15% Transparent PV Glass +

Argon Chamber + Low-e Glass

www.onyxsolar.com

LOW-E PHOTOVOLTAIC GLASS. AWARDED AS THE MOST INNOVATIVE GLASS PRODUCT OF 2015


TOTAL REDUCTION IN ENERGY DEMAND

9.843.382

kWh

TOTAL LIGHTING POINTS OPERATING 4 HOURS PER DAY

18.728

lights/year*

AVOIDED CO 2 EMMISIONS

BARRELS OF OIL SAVED

6.595.066

Kg CO2

7

5.808 Barrels

ELECTRIC CAR MILEAGE THANKS TO THE ENERGY GENERATED

72.913.871 Km

* Calculated with energy efficient light bulbs of 12W (light-emitting diode equiv alent to a traditional incandescent light bulb of 100W)

www.onyxsolar.com

LOW-E PHOTOVOLTAIC GLASS. AWARDED AS THE MOST INNOVATIVE GLASS PRODUCT OF 2015


ONYX SOLAR PHOTOVOLTAIC GLASS

Year 1

2

3

4

5

6

7

8

9

10

11

12

13

14

15

16

17

18

19

20

21

22

23

24

25

26

27

28

29

Year 30

ENERGY COST WITH

ONYX SOLAR GLASS

Electricity cost guaranteed

for the next 30 years

(Amount to invest / T otal

reduction of energy demand

in kWh)

ENERGY COST PER KWh

CURRENT ELECTRICITY

COST

Local electricitity tariff per

kWh in 2015

ENERY COST

REDUCTION PER kWh

Savings in the electricity

expense generated from the

reduction in energy demand

0,45 €

0,40 €

AFFIX YOUR ENERGY COST FOR THE NEXT 30 YEARS AT LESS THAN:

0,04 € PER kWh

1

2

3

4

5

Glass configuration (EUR/kWh) (EUR/kWh) %

Clear glass + 1/2" air chamber + clear

glass

Monocrystalline silicon

photovoltaic cells with a

transparency degree of 38% +

12mm air chamber + clear glass

Monocrystalline silicon photovoltaic

cells with a transparency degree of

38% + 12mm argon chamber + low-e

glass

Monocrystalline silicon photovoltaic

cells with a transparency degree of

15% + 12mm air chamber + clear

glass

Monocrystalline silicon photovoltaic

cells with a transparency degree of

15% +12mm argon chamber + low-e

glass

Without Onyx Solar Glass there are no savings in energy cost.

0,04 € 0,24 € 85%

0,04 € 0,24 € 84%

0,04 € 0,24 € 84%

0,04 € 0,24 € 84%

0,35 €

0,30 €

0,25 €

0,20 €

0,15 €

0,10 €

0,05 €

- €

SAVINGS

ENERGY COST WITH ONYX SOLAR GLASS LOCAL ELECTRICITY COST

8

www.onyxsolar.com

LOW-E PHOTOVOLTAIC GLASS. AWARDED AS THE MOST INNOVATIVE GLASS PRODUCT OF 2015


ONYX SOLAR LOW-E PV GLASS

RETURN ON INVESTMENT

AVERAGE

REDUCTION OF

ENERGY DEMAND

AMOUNT TO INVEST

PAYBACK PERIOD

IRR

TIMES THE

INVESTMENT

Average reduction of energy

demand per square meter of

Glass from energy

generation and the HVAC

savings in 30 years

Investment needed to add

Photovoltaic Properties to

each SQM of Glass and the

Cost for the Balance of

System

T ime required for the return

on the investment

Internal Rate of Return:

average annual return during

the first 30 years of the

investment

Number of times that the

amount invested is received

during the invesment period

of 30 years

(Average

Reduction of Energy

Demand /Investment )

GLASS CONFIGURATION (EUR/SQM) (EUR/SQM) years

% times

1

Clear glass + 12mm air chamber +

clear glass

Without Onyx Solar Glass there is no additional reduction in energy demand, so no Return on the Investment is received

2

Monocrystalline silicon

photovoltaic cells with a

transparency degree of 38% +

1.090,51 € 102,57 € < 4 29%* 11 BEST CHOICE

9

12mm air chamber + clear glass

Monocrystalline silicon photovoltaic

3

cells with a transparency degree of

38% + 12mm argon chamber + low-e

1.160,02 € 114,57 € < 4 28% 10 BEST CHOICE

glass

Monocrystalline silicon photovoltaic

4

cells with a transparency degree of

15% + 12mm air chamber + clear

1.402,05 € 141,15 € < 4 28% 10 BEST CHOICE

glass

Monocrystalline silicon photovoltaic

5

cells with a transparency degree of

15% +12mm argon chamber + low-e

1.504,53 € 153,15 € < 4 28% 10 BEST CHOICE

glass

* IRR at: ·5 YEARS: 12% · 10 YEARS: 26% · 20 YEARS: 29% · 30 YEARS: 29%

www.onyxsolar.com

LOW-E PHOTOVOLTAIC GLASS. AWARDED AS THE MOST INNOVATIVE GLASS PRODUCT OF 2015


AVERAGE REDUCTION OF ENERGY DEMAND Vs. AMOUNT TO INVEST

(EUR/SQM)

1.600 €

1.400 €

1.200 €

1.000 €

10

800 €

600 €

NO RETURN ON

INVESTMENT

400 €

200 €

- €

Clear Glass + Air Chamber +

Clear Glass

38% Semi-Transparent PV Glass

+ Air Chamber + Clear Glass

38% Semi-Transparent PV Glass

+ Argon Chamber + Low-e

Glass

15% Transparent PV Glass + Air

Chamber + Clear Glass

15% Transparent PV Glass +

Argon Chamber + Low-e Glass

AVERAGE REDUCTIONOF ENERGY DEMAND (EUR/SQM)

AMOUNT TO INVEST (EUR/SQM)

www.onyxsolar.com

LOW-E PHOTOVOLTAIC GLASS. AWARDED AS THE MOST INNOVATIVE GLASS PRODUCT OF 2015


OTHER ADVANTAGES OF BIPV AND GREEN BUILDING DESIGN

Green Building design is becoming a great interest for real estate companies today. This is especially true within the business model where the leasing

tenants are responsible of operating and managing the building. Qualitative facts such as return on investment, enhanced indoor comfort and

productivity level due to the radiation filtration with optimal natural light contribute in earning Green certifications such as LEED and BREAM. The return on

investment is a key feature of the BIPV that is associated with the company’s commitment in preserving the environment.

Other economic benefits of the BIPV are as the following (source: www.usgbc.com):

Operating costs decrease 8-9%

Building value increases 7,5%

Return on investment improves 6,6%

Occupancy rate increases 3,5%

Rent ratio increases 3%

11

Saving money with the BIPV is made possible by its multifunctional characteristic in which it distributes the produced solar electricity, improves thermal

insulation, and reduces the use of artificial lighting with the optimal amount of sunlight indoors. Consequently, the building will also eliminate a significant

amount of CO2 emission.

The generated solar electricity will feed the building’s electricity consumption, thereby reducing the kVA needed from other conventional sources. This

will also result in minimizing the peak load and peak demand for the HVAC and the lightings.

In conjunction with the ability to save energy as well as to generate it, you will be given a peace of mind in knowing that the building’s energy cost will

remain minimal.

www.onyxsolar.com

LOW-E PHOTOVOLTAIC GLASS. AWARDED AS THE MOST INNOVATIVE GLASS PRODUCT OF 2015


HYPOTHESIS AND ASSUMPTIONS

Location

MADRID

T otal Construction Area (sq.meter) 3.242

Windows to Wall Ratio 70%

T otal Glass Surface Area (sq.meter) 2.464

Local Electricity Cost 0,24 €

Variation in Electricity Cost until 2020 8,18%

Variation in Electricity Cost from 2020 1,00%

- Electricity prices were obtained from EUROSTAT (second semester 2014)

(http://ec.europa.eu/eurostat/statisticsexplained/index.php/File:Half_yearly_electricity_and_gas_prices_EUR_new

.png).

-The electricity price increase was calculated with data obtained from

Eurostat. Up to year 2020, the average price increase is at 8,18% for the

buildings with annual consumption under 500 MWh, during the last 10

years in SPAIN (electricity price in 2004S1: 10,79 cents EUR/Kwh;

electricity price in 2014S1: 21,65 cents EUR/Kwh)

(http://ec.europa.eu/eurostat/web/energy/data/database). From year 2020

onwards, the price increase used is at 1% which considers the energy price

forecast included in the European Commission report “EU Energy,

Transport, and Greenhouse Gas Emissions Trends to 2050”.

(http://ec.europa.eu/transport/media/publications/doc/trends-to-2050-

update-2013.pdf).

- Energy savings are calculated from the simulations with the following

software and database: Design Builder and Energy Plus.

- Photovoltaic energy production is estimated from simulations done with

PVGIS (http://re.jrc.ec.europa.eu/pvgis/) and PVWATTS

(http://pvwatts.nrel.gov). The energy estimations do not take into account

shadows and system losses.

- The PV power output reduction in 30 years is estimated in 20%.

- Calculation estimates 30 years of building use.

- The building taken as a reference is designed under ASHRAE 90.1-2010

building Standards.

- The building’s volume measures 120’x80’x65’ (36,5x21,5 x20m)

- The total floor area of the building is 3.242 m2 divided in five floors. The

building also features a rectangular skylight which measures 144 m2.

- The window to wall ratio (WWR) for the curtain wall is 70% (Floor to Floor)

which is equivalent to 100% (Floor to Ceiling).

- The building’s largest façades surface is oriented at 0° and 180°.

- Curtain wall and Skylight Glazing: The composition of an insulating

glazing unit (IGU) 6T.6T/12Air/4.4mm. The estimated cost is 135

EUR/SQM.

- All HVAC equipments are connected to the electricity grid.

- The simulation does not include additional energy savings in HVAC and

load reduction or the improvements in thermal envelope.

- Balance of System cost has been extracted from the Solar Market Insight

Report 2015 Q1 elaborated by the Solar Energy Industries Association of

USA (SEIA) where inverter cost is 0,2 US$/Wp., electrical BOS is 0,15

US$/Wp.& electrical related labour, engineering and PII is 0,2 US$/Wp.

-The total extra cost of the Balance of system (compared with the

installation of the regular clear glass studied along this Feasibility Study)

has been estimated in 0,43 EUR/Wp for SPAIN. Labour costs for Europe

are adjusted with data obtained from United Nations Economic Commission

for Europe (http://w3.unece.org/pxweb/) and

http://www.tradingeconomics.com.

- This report has not considered any possible incentives and/or Feed in

Tariff system that the PV installation may qualify for.

-Exchange rate used in the report: 1US$=0,9 EUR.

General Note:

This feasibility study has been carried out on a good faith basis under the

hypothesis and assumptions aforementioned. Further analysis and

calculations might be needed for a dedicated project.

If you are interested in a simulation for your particular building please

contact us.

Calculate the Photovoltaic Energy produced by your building here.

Calculate the U value (or thermal transmittance) of your PV glass system

here.

Clear glass + 12mm air chamber + clear glass

Technical Characteristics of Glazing U Value (W/m2K) SHGC (%)

Clear Glass with monocrystalline silicon photovoltaic cells with a transparency degree

of 38% + 12mm air chamber + clear glass

Clear Glass with monocrystalline silicon photovoltaic cells with a transparency degree

of 38% + 12mm argon chamber + low-e glass

Clear Glass with monocrystalline silicon photovoltaic cells with a transparency degree

of 15% + 12mm air chamber + clear glass

Visible Light

Transmission (%)

Peak Power

(Wp/SQM)

2.69 70 79 0

2.8 29 38 111

1.2 25 38 111

2.8 17 15 152

12

Clear Glass with monocrystalline silicon photovoltaic cells with a transparency degree

of 15% +12mm argon chamber + low-e glass

1.2 15 15 152

www.onyxsolar.com

LOW-E PHOTOVOLTAIC GLASS. AWARDED AS THE MOST INNOVATIVE GLASS PRODUCT OF 2015


SPAIN (Avila)

C/ Rio Cea 1,46 · 05004

Phone: +34 920 21 00 50

info@onyxsolar.com

13

UNITED STATES (New York)

1123 Broadway, Suite 908, NY 10010

Phone: +1 917 261 4783

info@onyxsolar.com

www.onyxsolar.com

©© Copyright Onyx Solar Energy S.L – All Rights Reserved

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LOW-E PHOTOVOLTAIC GLASS. AWARDED AS THE MOST INNOVATIVE GLASS PRODUCT OF 2015

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