Mainstream BIPV? · 2016-09-26 · Mainstream BIPV market emerging in Netherlands? Key segments:...

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Partner in solar energy solutions

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Mainstream BIPV?

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Traditional PV mainstream market

Market

Feed-in tarrifs

Net-metering

Solar installers

Products

Efficiency

Costs

Yield

Degradation rate

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Traditional BIPV niche market

Market

High end design

Image & Communication

Architects

Products

Shape & size

Colour

Semi-transparency

Structural safety

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Emerging BIPV mainstream market?

Market

Social housing corporations

Construction companies

Energy performance (EPC, EPBD)

Real estate value

Products

Low costs (saving on roof tiles)

Good aesthetics

Added functionality: Insulation & Heat

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Social Housing Corporations

Owner of many older and poorly insulated buildings: Terraced houses & Apartments

‘Performance contract’ with local government on CO2 emissions

Mission to reduce housing costs for low income tenants

Aesthetics seen as important for general neighbourhood status

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Housing stock in need of renovation

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City Tilburg

Housing corp. Tiwos

Architect KAW Architecten

BIPV product SCX Soloroof

Project size 75 terraced houses

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City Eindhoven

Housing corp. Woonbedrijf

Architect Van Helmond-Zuidam

BIPV product AERspire


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City Heerhugowaard

Housing corp. Woonwaard

Architect Wenink Holtkamp Architecten

BIPV product? EMERGO


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Trends in BIPV for social housing corporations

PV + insulation

Thin film PV

Heat recovery

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• Prefab mounting PV on

insulation element

• Crane installation of

integrated element

• Insulation element or

prefab roof

• Standard PV panel

• Innovative prefab

mounting methods

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Trend: Insulation + PV

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Calculation after NEN7120

Terraced house <1974 Energy label E

Renovation with Rc = 4 m2K/W insulation & 4 kWp PV Energy label A

Why roof insulation + PV? Four energy label steps

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Why roof insulation & PV? 1500 euro/a energy savings

Savings from PV

Savings from Insulation

An

nu

al sa

vin

gs (

eur/

a)

Year

• Roof insulation reduces heating demand in winter.

• PV reduces electricity demand.

Combined cost savings of 1500 euro/a.

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Conventional renovation

Roof workers need to access the roof three times:

1. Insulation

2. Roof Tiles

3. PV

“Insulation Integrated PV”

Single time roof access! 1. Insulation 2. Tiles 3. PV

Why roof insulation & PV? Efficient mounting

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Trend: Thin film PV

Trend towards experimenting with thin film PV panels.

Two key arguments:

Lower cost per m2

Better aesthetics

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Low cost per m2

Cost per m2?

cSi 160 Wp/m2 x 0.50 €/Wp = 80 €/m2

TF 100 Wp/m2 x 0.40 €/Wp = 40 €/m2

Avoided costs?

Roof tiles 40 €/m2

Exchange roof tile for TF without added costs!

Better business case for 10% TF than 16% c-Si

Panel

Substract 40 €/m2 avoided costs

System

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Aesthetics

No shiny tabs = Good aesthetics

Good roof filling = Good aesthetics

Houses 1945-1973: Typical roof 4.80m x 6.40m

c-Si panel 1.05 x 1.65 gives 63% roof filling

TF panel 1.20 x 0.60 gives 94% roof filling

Small panel = Good aesthetics

Roof tiles 0.40m high

TF panels 0.60m high

cSi panels 1.0-1.6m high

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Electricity

Heat

Trend: Heat recovery

Heat is 2/3 of energy demand

BIPV panels get hot

Extraction via ventilation air (air-to-water heat pump or heat exchanger).

Extraction via water tubes (PVT)

Real challenge is integral system design

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Conclusions

Mainstream BIPV market emerging in Netherlands?

Key segments:

Social housing corporations

Construction companies

Typical project size 50-100 houses

Focus on BIPV with low costs & good aesthetics

Future developments:

Trend for PV + insulation

Trend for experimenting with thin film PV

Trend for heat recovery

Mainstream BIPV? · 2016-09-26 · Mainstream BIPV market emerging in Netherlands? Key segments:...

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Transcript of Mainstream BIPV? · 2016-09-26 · Mainstream BIPV market emerging in Netherlands? Key segments:...