As several asked, here is a "want list" (non exhaustive,,,,,)


Domestic & commercial:
- heating (from boilers, pipes, radiators, convectors, control systems, valves Etc...)
- Cooling
- Cooking (also including people making food)
- Ventilation
- Any white goods (washing machines, dishwasher, fridge, freezer) when possible without the trademark.
- Any small appliance: hair drier, ventilator, etc...
- Gas and electrical meters in/outside houses
- Fuel oil: tanks, refilling, boilers, burners etc...
- Micro CHP
- El cars / el vehicles / vehicles using RE


Industrial
- CHP
- Engines (gas fuel & oil)
- Energy plant (gas, coal, fuel oil, renewable, solar, geothermal, dam etc..)
- Biogas plants
- Fuel cell / Hydrogen
- LNG terminals, LNG transport
- Oil Refineries
- Energy utilisation in the industry (glass, cast iron etc...)
- Flames / combustion
- Pipelines
- Large plants, large technical installation related to energy with people working or without people
- Coal mines
- Industry using energy, flames
- Renewable (wind, PV, biogas, solar...) including large sloar power plants
- Infrastructure, el / gas grid etc...compression stations

Nature
- Glaciers, icebergs etc..
- Environmental pictures, pollution etc..
- Any pictures that convey energy & environment including global warming idea.

ask if you are in doubt....
thank you
jean