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

PVSEC 2016

Partner in solar energy solutions

PVSEC 2016 PVSEC 2016

PVSEC 2016

Mainstream BIPV?

PVSEC 2016

Traditional PV mainstream market

Market

Feed-in tarrifs

Net-metering

Solar installers

Products

Efficiency

Degradation rate

PVSEC 2016

Traditional BIPV niche market

Market

High end design

Image & Communication

Architects

Products

Shape & size

Colour

Semi-transparency

Structural safety

PVSEC 2016

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

PVSEC 2016

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

PVSEC 2016

Housing stock in need of renovation

PVSEC 2016

City Tilburg

Housing corp. Tiwos

Architect KAW Architecten

BIPV product SCX Soloroof

Project size 75 terraced houses

PVSEC 2016

City Eindhoven

Housing corp. Woonbedrijf

Architect Van Helmond-Zuidam

BIPV product AERspire

PVSEC 2016

City Heerhugowaard

Housing corp. Woonwaard

Architect Wenink Holtkamp Architecten

BIPV product? EMERGO

PVSEC 2016

Trends in BIPV for social housing corporations

PV + insulation

Thin film PV

Heat recovery

PVSEC 2016

• Prefab mounting PV on

insulation element

• Crane installation of

integrated element

• Insulation element or

prefab roof

• Standard PV panel

• Innovative prefab

mounting methods

PVSEC 2016

Trend: Insulation + PV

PVSEC 2016

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

PVSEC 2016

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

Savings from PV

Savings from Insulation

• Roof insulation reduces heating demand in winter.

• PV reduces electricity demand.

Combined cost savings of 1500 euro/a.

PVSEC 2016

Conventional renovation

Roof workers need to access the roof three times:

1. Insulation

2. Roof Tiles

“Insulation Integrated PV”

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

Why roof insulation & PV? Efficient mounting

PVSEC 2016

Trend: Thin film PV

Trend towards experimenting with thin film PV panels.

Two key arguments:

Lower cost per m2

Better aesthetics

PVSEC 2016

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

Substract 40 €/m2 avoided costs

System

PVSEC 2016

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

PVSEC 2016

Electricity

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

PVSEC 2016

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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