I was trying to boost emission of my objects. Currently Ireached the limit I think. I use nodes, looked in all settings but cannot boost the emission more than default. I cannot control it.
If you want them to light surrounding objects increase the emit value in its material settings. You need to type the value to get it above 2.0
In the World settings enable the Indirect Lighting tickbox and ensure the Gather is set to Approximate. Note that the light emitted doesn’t cast shadows.