Useful power industries web links evaluated and selected by a network of subject specialists are listed below: 

American Gas Association 
US energy trade association. Website includes news and statistics.

American Society of Mechanical Engineers (ASME) - Power Division 
Website includes sections on publications, codes & standards, education events and careers.

Association of Manufacturers of Power Generating Systems (AMPS) 
UK trade association.

British Standards Institution (BSI) 
UK standards and quality services organisation.

Energy Institute 
International (UK based) professional body for energy industries.

Energy Networks Association
Trade association for the UK gas and electricity transmission and distribution industry.

Energy UK 
Trade association for the UK energy industry.

Industrial Maintenance and Plant Operation 
Includes buyer's guide and product directory.

Institution of Chemical Engineers 
International (UK based) professional association.

Institution of Diesel and Gas Turbine Engineers 
Independent UK professional body serving the diesel and gas turbine industry.

Institution of Gas Engineers and Managers 
Independent UK body for the gas industry.

International Energy Agency
Intergovernmental organisation providing research and energy policy recommendations.

Nuclear Institute 
UK professional institute and learned society for the nuclear industry.

Oil and Gas UK
Trade association for UK offshore oil and gas industry.

Renewable Energy Association
UK trade association for renewable energy.

The Renewable Energy Directory 
Lists details of renewable energy system installers and companies.

RenewableUK
Trade body for the UK wind and marine renewables industries.

REUK - Renewable Energy UK 
Directory of renewable energy installers and companies.

Solar Energy UK
UK trade association for the solar energy industry.

Nuclear Industry in the UK. 

General Interest pages

Nuclear Institute Useful Resources 
UK Nuclear Industry Booklet
National Skills Academy Nuclear 
World Nuclear News 
Office for Nuclear Regulation 
World Nuclear Association 

Nuclear New Build

EdF Nuclear New Build, Hinkley Point C, Sizewell C, Bradwell B 
Horizon Nuclear Power, Wylfa Newydd, Oldbury B 
Advanced Boiling Water Reactor 
NuGen, Moorside  
Westinghouse AP1000 Pressurised Water Reactor 
Nuclear Advanced Manufacturing Research Centre 
Generic Design Assessment 

Generation

EdF Energy Generating Sites 
Advanced Gas-cooled Reactor 
Nuclear Industry Association 

Decommissioning

Magnox Ltd
Sellafield Ltd 
Cavendish Nuclear, Sellafield
Nuclear Decommissioning Authority
Nuclear Decommissioning Authority
Nuclear Industry Association
Nuclear Advanced Manufacturing Research Centre

Defence

Office for Nuclear Regulation 
Royal Navy, Devonport 
BAE Systems 
Rolls-Royce Nuclear 
AWE 

Research

Nuclear Advanced Manufacturing Research Centre
National Nuclear Laboratory
United Kingdom Atomic Energy Authority
EURO Fusion