Articles in books

• Langniss, O. (Lead Author) et al. Renewable Energy Sources and Climate Change Mitigation. Special Report of the Intergovernmental Panel on Climate Change (IPCC). Chapter 11: Policy, Financing and Implementation. 2012.
• Langniss, O., Ziesing, H.: Policy over 30 years for promoting renewable energies, in Jannsen, P, (ed.): On track to a solar future, Munich, 2005, pp 209–221
• Langniss, O., Wiser, R.: Design and impacts of the Texas renewables portfolio standard, in Lauber, V, (ed.): Switching to renewable power, London 2005, pp 187–202
• Nitsch, J., Krewitt, W., Langniss, O.: Renewable energy in Europe, in Cleveland, C, (ed.): Encyclopedia of Energy, 2003
• Langniss, O., Nitsch, J.: Energy policy and energy-relevant fields, in Michelsen, Gerd (ed.): Environmental consultancy – fundamentals and practice, Economica Publishers, ISBN 3-87081-066-1, Bonn 1997, pp 441-452
• Langniss, O., Michelsen, G., Nitsch, J.: Energy 2010, Priority for rational energy use and regenerative energies In: Liebert, W., Schmithals, F, (eds.): Chernobyl with no end in sight, Münster 1997, pp 249–266
• Nitsch, J., Langniss, O.: Strategies for effective expansion of regenerative energies, in Bender, W, (ed.): Responsible energy supplies for the future, Darmstadt 1997, pp 359–374