Class information for:
Level 1: EROI//ENERGY PAYBACK TIME//ENERGY RETURN ON INVESTMENT EROI

Basic class information
Class id #P Avg. number of
references		 Database coverage
of references
12488 902 37.8 35%


Bar chart of Publication_year

Last years might be incomplete

Hierarchy of classes
The table includes all classes above and classes immediately below the current class.


Cluster id Level Cluster label #P
1 4 ECONOMICS//EDUCATION & EDUCATIONAL RESEARCH//PSYCHOL 3876184
426 3       ENERGY & FUELS//RENEWABLE ENERGY//ENERGY POLICY 27992
226 2             ENERGY POLICY//RENEWABLE ENERGY//RENEWABLE & SUSTAINABLE ENERGY REVIEWS 20485
12488 1                   EROI//ENERGY PAYBACK TIME//ENERGY RETURN ON INVESTMENT EROI 902

Terms with highest relevance score


rank Term termType Chi square Shr. of publ. in
class containing
term		 Class's shr. of
term's tot. occurrences		 #P with
term in
class
1 EROI authKW 869290 5% 60% 43
2 ENERGY PAYBACK TIME authKW 756378 4% 62% 36
3 ENERGY RETURN ON INVESTMENT EROI authKW 348183 1% 86% 12
4 EROEI authKW 286036 1% 65% 13
5 LIFE CYCLE ASSESSMENT authKW 221898 17% 4% 152
6 ENERGY RETURN ON INVESTMENT authKW 204304 1% 46% 13
7 NET ENERGY authKW 183741 3% 18% 31
8 NET ENERGY ANALYSIS authKW 171365 1% 56% 9
9 PHOTOVOLTA ENVIRONM address 165868 1% 70% 7
10 ENERGY PAYBACK TIME EPBT authKW 150788 1% 64% 7

Web of Science journal categories


Rank Term Chi square Shr. of publ. in
class containing
term		 Class's shr. of
term's tot. occurrences		 #P with
term in
class
1 GREEN & SUSTAINABLE SCIENCE & TECHNOLOGY 30985 24% 0% 220
2 Energy & Fuels 30649 59% 0% 528
3 Environmental Studies 7019 16% 0% 144
4 Environmental Sciences 4656 35% 0% 317
5 Engineering, Environmental 3708 17% 0% 149
6 Thermodynamics 958 9% 0% 80
7 Engineering, Chemical 261 8% 0% 76
8 Physics, Applied 87 9% 0% 85
9 Materials Science, Multidisciplinary 75 10% 0% 90
10 Economics 29 3% 0% 27

Address terms


Rank Term Chi square Shr. of publ. in
class containing
term		 Class's shr. of
term's tot. occurrences		 #P with
term in
class
1 PHOTOVOLTA ENVIRONM 165868 1% 70% 7
2 LIFE CYCLE ANAL 143355 1% 35% 12
3 ADV ENERGY MAT SYST AEMS 135406 0% 100% 4
4 PV ENVIRONM 121860 1% 60% 6
5 ENERGIA DESARROLLO SUSTENTABLE 77371 0% 57% 4
6 ENERGY SYST ECON 67703 0% 100% 2
7 GEOL OIL GAS FIELDS 67703 0% 100% 2
8 PL IQUI CONICET 50774 0% 50% 3
9 ENVIRONM WASTE TECHNOL GRP 45134 0% 67% 2
10 PV EHS 45134 0% 67% 2

Journals


Rank Term Chi square Shr. of publ. in
class containing
term		 Class's shr. of
term's tot. occurrences		 #P with
term in
class
1 PROGRESS IN PHOTOVOLTAICS 45505 5% 3% 47
2 INTERNATIONAL JOURNAL OF LIFE CYCLE ASSESSMENT 35331 4% 3% 37
3 ENERGY POLICY 22778 9% 1% 78
4 RENEWABLE & SUSTAINABLE ENERGY REVIEWS 20542 7% 1% 62
5 JOURNAL OF INDUSTRIAL ECOLOGY 15937 2% 2% 19
6 ENERGY 11611 7% 1% 61
7 SUSTAINABILITY 10890 4% 1% 33
8 RENEWABLE ENERGY 9205 5% 1% 47
9 APPLIED ENERGY 7721 5% 1% 46
10 ENERGIES 6915 3% 1% 26

Author Key Words


Rank Term Chi square Shr. of publ. in
class containing
term		 Class's shr. of
term's tot. occurrences		 #P with
term in
class		 LCSH search Wikipedia search
1 EROI 869290 5% 60% 43 Search EROI Search EROI
2 ENERGY PAYBACK TIME 756378 4% 62% 36 Search ENERGY+PAYBACK+TIME Search ENERGY+PAYBACK+TIME
3 ENERGY RETURN ON INVESTMENT EROI 348183 1% 86% 12 Search ENERGY+RETURN+ON+INVESTMENT+EROI Search ENERGY+RETURN+ON+INVESTMENT+EROI
4 EROEI 286036 1% 65% 13 Search EROEI Search EROEI
5 LIFE CYCLE ASSESSMENT 221898 17% 4% 152 Search LIFE+CYCLE+ASSESSMENT Search LIFE+CYCLE+ASSESSMENT
6 ENERGY RETURN ON INVESTMENT 204304 1% 46% 13 Search ENERGY+RETURN+ON+INVESTMENT Search ENERGY+RETURN+ON+INVESTMENT
7 NET ENERGY 183741 3% 18% 31 Search NET+ENERGY Search NET+ENERGY
8 NET ENERGY ANALYSIS 171365 1% 56% 9 Search NET+ENERGY+ANALYSIS Search NET+ENERGY+ANALYSIS
9 ENERGY PAYBACK TIME EPBT 150788 1% 64% 7 Search ENERGY+PAYBACK+TIME+EPBT Search ENERGY+PAYBACK+TIME+EPBT
10 MULTICRYSTALLINE SILICON PHOTOVOLTAIC SYSTEMS 101554 0% 100% 3 Search MULTICRYSTALLINE+SILICON+PHOTOVOLTAIC+SYSTEMS Search MULTICRYSTALLINE+SILICON+PHOTOVOLTAIC+SYSTEMS

Core articles
The table includes core articles in the class. The following variables is taken into account for the relevance score of an article in a cluster c:
(1) Number of references referring to publications in the class.
(2) Share of total number of active references referring to publications in the class.
(3) Age of the article. New articles get higher score than old articles.
(4) Citation rate, normalized to year.


Rank Reference # ref.
in cl.		 Shr. of ref. in
cl.		 Citations
1 NUGENT, D , SOVACOOL, BK , (2014) ASSESSING THE LIFECYCLE GREENHOUSE GAS EMISSIONS FROM SOLAR PV AND WIND ENERGY: A CRITICAL META-SURVEY.ENERGY POLICY. VOL. 65. ISSUE . P. 229 -244 79 66% 26
2 PENG, JQ , LU, L , YANG, HX , (2013) REVIEW ON LIFE CYCLE ASSESSMENT OF ENERGY PAYBACK AND GREENHOUSE GAS EMISSION OF SOLAR PHOTOVOLTAIC SYSTEMS.RENEWABLE & SUSTAINABLE ENERGY REVIEWS. VOL. 19. ISSUE . P. 255-274 46 85% 116
3 DALE, M , (2013) A COMPARATIVE ANALYSIS OF ENERGY COSTS OF PHOTOVOLTAIC, SOLAR THERMAL, AND WIND ELECTRICITY GENERATION TECHNOLOGIES.APPLIED SCIENCES-BASEL. VOL. 3. ISSUE 2. P. 325 -337 43 88% 13
4 RAVIKUMAR, D , WENDER, B , SEAGER, TP , FRASER, MP , TAO, M , (2017) A CLIMATE RATIONALE FOR RESEARCH AND DEVELOPMENT ON PHOTOVOLTAICS MANUFACTURE.APPLIED ENERGY. VOL. 189. ISSUE . P. 245 -256 52 70% 0
5 GORIG, M , BREYER, C , (2016) ENERGY LEARNING CURVES OF PV SYSTEMS.ENVIRONMENTAL PROGRESS & SUSTAINABLE ENERGY. VOL. 35. ISSUE 3. P. 914 -923 34 87% 1
6 ASDRUBALI, F , BALDINELLI, G , D'ALESSANDRO, F , SCRUCCA, F , (2015) LIFE CYCLE ASSESSMENT OF ELECTRICITY PRODUCTION FROM RENEWABLE ENERGIES: REVIEW AND RESULTS HARMONIZATION.RENEWABLE & SUSTAINABLE ENERGY REVIEWS. VOL. 42. ISSUE . P. 1113 -1122 26 74% 31
7 DALE, M , BENSON, SM , (2013) ENERGY BALANCE OF THE GLOBAL PHOTOVOLTAIC (PV) INDUSTRY - IS THE PV INDUSTRY A NET ELECTRICITY PRODUCER?.ENVIRONMENTAL SCIENCE & TECHNOLOGY. VOL. 47. ISSUE 7. P. 3482-3489 28 88% 29
8 TURCONI, R , BOLDRIN, A , ASTRUP, T , (2013) LIFE CYCLE ASSESSMENT (LCA) OF ELECTRICITY GENERATION TECHNOLOGIES: OVERVIEW, COMPARABILITY AND LIMITATIONS.RENEWABLE & SUSTAINABLE ENERGY REVIEWS. VOL. 28. ISSUE . P. 555-565 31 65% 65
9 WONG, JH , ROYAPOOR, M , CHAN, CW , (2016) REVIEW OF LIFE CYCLE ANALYSES AND EMBODIED ENERGY REQUIREMENTS OF SINGLE-CRYSTALLINE AND MULTI-CRYSTALLINE SILICON PHOTOVOLTAIC SYSTEMS.RENEWABLE & SUSTAINABLE ENERGY REVIEWS. VOL. 58. ISSUE . P. 608 -618 27 93% 0
10 YU, ZQ , MA, WH , XIE, KQ , LV, GQ , CHEN, ZJ , WU, JJ , YU, J , (2017) LIFE CYCLE ASSESSMENT OF GRID-CONNECTED POWER GENERATION FROM METALLURGICAL ROUTE MULTI-CRYSTALLINE SILICON PHOTOVOLTAIC SYSTEM IN CHINA.APPLIED ENERGY. VOL. 185. ISSUE . P. 68 -81 24 59% 1

Classes with closest relation at Level 1


Rank Class id link
1 33518 CONVENTIONAL CRUDE//OIL SANDS OPERATIONS//STEAM TO OIL RATIO
2 34507 MUSIASEM//SOCIETAL METABOLISM//MULTI SCALE INTEGRATED ANALYSIS
3 35182 ENERGY ACCIDENTS//ENSAD DATABASE//ENERGY SYSTEMS AND RISK
4 8747 INTERNATIONAL JOURNAL OF LIFE CYCLE ASSESSMENT//LIFE CYCLE IMPACT ASSESSMENT//LCIA
5 16713 PEAK OIL//OIL DEPLETION//PEAK COAL
6 8122 ENERGYPLAN//VARIABLE RENEWABLES//WIND POWER
7 5182 FEED IN TARIFF//RENEWABLE PORTFOLIO STANDARD//RENEWABLE ENERGY POLICY
8 9256 SUBSTANCE FLOW ANALYSIS//MATERIAL FLOW ANALYSIS//IN USE STOCK
9 31378 OUTPUT ELASTICITIES//SPACE MINING//SULFUR CONCRETE
10 27632 EXTERNAL COSTS//IMPACT PATHWAY APPROACH//ELECTRICITY EXTERNALITIES

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