American Energy: The Renewable Path to Energy Security [online]. Worldwatch Institute, September 2006, [cit. 2007-03-11]. Dostupné online.
ases.org
Roger Bezdek. Renewable Energy and Energy Efficiency: Economic Drivers for the 21st Century [online]. American Solar Energy Society, [cit. 2008-01-17]. Dostupné online. Archivované 2007-11-27 z originálu.
Denis Du Bois. Thin Film Could Soon Make Solar Glass and Facades a Practical Power Source [online]. Energy Priorities, May 22, 2006, [cit. 2007-09-19]. Dostupné online. Archivované 2007-10-12 z originálu.
ens-newswire.com
"Priemerné rýchlosti vetra prímorských veterných elektrární vo výške 80 m sú o 90% väčšie ako priemerné rýchlosti suchozemských. Evaluation of global wind power "Overall, the researchers calculated winds at 80 meters [300 feet] traveled over the ocean at approximately 8.6 meters per second and at nearly 4.5 meters per second over land [20 and 10 miles per hour, respectively]." Global Wind Map Shows Best Wind Farm Locations (URL prístup 30. január, 2006).
ethanol-gec.org
Angela Graf, Tom Koehler Oregon Cellulose-Ethanol Study [online]. Oregon Office of Energy, June 2000, [cit. 2008-01-17]. Dostupné online. Archivované 2005-11-24 z originálu.
euractiv.sk
JENČOVÁ, Irena. Rozvoj geotermálnej energie na Slovensku brzdí legislatíva. Pomôcť má nový zákon [online]. euractiv.sk, 2022-01-21, [cit. 2022-11-07]. Dostupné online.
HNonline.sk - Voda tam má 135 stupňov. Košice sa priblížili k vykurovaniu tisícok bytov teplom spod zemského povrchu [online]. hnonline.sk, 2022-06-30, [cit. 2022-11-07]. Dostupné online.
iea.org
Fuel shares in world TES, 2018 – Charts – Data & Statistics [online]. IEA, [cit. 2020-09-08]. Dostupné online. (po anglicky)
World gross electricity production, by source, 2018 – Charts – Data & Statistics [online]. IEA, [cit. 2020-09-08]. Dostupné online. (po anglicky)
"Priemerné rýchlosti vetra prímorských veterných elektrární vo výške 80 m sú o 90% väčšie ako priemerné rýchlosti suchozemských. Evaluation of global wind power "Overall, the researchers calculated winds at 80 meters [300 feet] traveled over the ocean at approximately 8.6 meters per second and at nearly 4.5 meters per second over land [20 and 10 miles per hour, respectively]." Global Wind Map Shows Best Wind Farm Locations (URL prístup 30. január, 2006).
stuff.co.nz
Major solar power plant opens in Portugal [online]. [Cit. 2008-05-06]. Dostupné online. Archivované 2007-09-30 z originálu.
sustainabilitycentre.com.au
Why Australia needs wind power [online]. [Cit. 2008-05-06]. Dostupné online. Archivované 2011-07-06 z originálu.
Vo Francúzsku uviedli do prevádzky najväčšiu solárnu elektráreň v Európe [online]. TASR, 08.12.2015, [cit. 2015-12-08]. Dostupné online.
tvenergy.org
Small Scale Wind Energy Factsheet [online]. Thames Valley Energy, Last Updated: 14-02-2007, [cit. 2007-09-19]. Dostupné online. Archivované 2007-08-23 z originálu.
umn.edu
ddgs.umn.edu
University of Minnesota [online]. [Cit. 2008-05-06]. Dostupné online. Archivované 2007-08-06 z originálu.
Global Status Report 2007 [online]. [Cit. 2008-04-13]. Dostupné online. Archivované 2008-04-15 z originálu.
Roger Bezdek. Renewable Energy and Energy Efficiency: Economic Drivers for the 21st Century [online]. American Solar Energy Society, [cit. 2008-01-17]. Dostupné online. Archivované 2007-11-27 z originálu.
Angela Graf, Tom Koehler Oregon Cellulose-Ethanol Study [online]. Oregon Office of Energy, June 2000, [cit. 2008-01-17]. Dostupné online. Archivované 2005-11-24 z originálu.
Small Scale Wind Energy Factsheet [online]. Thames Valley Energy, Last Updated: 14-02-2007, [cit. 2007-09-19]. Dostupné online. Archivované 2007-08-23 z originálu.
Denis Du Bois. Thin Film Could Soon Make Solar Glass and Facades a Practical Power Source [online]. Energy Priorities, May 22, 2006, [cit. 2007-09-19]. Dostupné online. Archivované 2007-10-12 z originálu.
"High-altitude winds could provide a potentially enormous renewable energy source, and scientists like Roberts believe flying windmills could put an end to dependence on fossil fuels. At 15,000 feet, winds are strong and constant. On the ground, wind is often unreliable — the biggest problem for ground-based wind turbines." Windmills in the Sky (URL accessed January 30, 2006).