Policy Inducement Effects in Energy Efficiency Technologies. An Empirical Analysis of the Residential Sector - Green Energy and Efficiency: An Economic Perspective - page 221

based instruments as claimed by standard environmental economics theory in the past,
but also information/education based instruments or policy instruments designed as
voluntary approaches. Moreover, policy instruments should be planned so as to be as
closely related as possible to the market of

nal use of technologies, giving the correct
signals to those agents who invest in energy saving technologies. Finally, the
emerging complexity of the policy mix in this c attention to

coordination problems so as to enhance the consistency and persistence of the whole
policy strategy. On this issue, further efforts from both the scienti

eld calls for speci

c and policy
communities are needed in order to increase understanding of policy interactions and
consequently enhance the effectiveness of the policy framework adopted.

Acknowledgements We acknowledge nancial support from: (i) the European Union D.G.
Research under Grant Agreement number 283002 for the research project '' Environmental Macro

Indicators of Innovation (EMInInn); (ii) the Roma Tre University-INEA-ENEA Consortium; (iii)

the Italian Ministry of Education, University and Research (Scientic Research Program of
National Relevance 2010 on

'

Climate change in the Mediterranean area: scenarios, economic
impacts, mitigation policies and technological innovation

“

” ). The usual disclaimer applies.

Appendix

Table 6a Patent classes by technological domains and keywords
Main
domain

Sub-domain CPC class Sub-

classes

Keywords

Insulation Heat saving E06B 3/24, 3/

64, 3/66,
3/67

E06B 3 High perform+ OR insulate

+ OR low energy

C03C 17/00,

17/36

Low e

E06B 3/67F Vacuum

E06B Aerogel

E06B 3/20

E06B 1/32, 3/

26

Thermal break

E04B 1/74, 1/

76

E04B Polyurethane OR PUR OR

polystyrene OR EPS OR XPS
OR heavy gas+ OR pentane
OR insulate+

(continued)