Global climate change is the most urgent problem faced by humankind. Professor Will Steffen of the Australian National University and co-authors have shown that the earth is liable to many tipping points, several subject to positive feedbacks.Unless there is a rapid transition to 100% renewable energy, humankind will lose control of climate change, with the planet entering the Anthropocene era. Severe global warming of 4 - 8 C would disrupt world food supplies, leading to mass starvations, migrations and war.
This note reflects Danish and German precedents on energy solutions, from which I have learnt the underlying principles.Humankind requires not energy but energy services such as illumination, movement and thermal comfort. Germany realisesthat it is not enough to set targets for reducing carbon emissions; policies, plans and actions are also required. It has adoptedthe ‘Energiewende’ energy transition plan for 80 to 95% carbon reduction by 2050. 1 Solutions for sustainable energy servicescan be determined by following a few fundamental principles and metrics, enumerated in this document.
This includes a presentation and a document with references.Nuclear fusion power on earth poses extreme technical challenges.One is the attainment of at least 100 million degrees C for long enough to produce net energy.Another is that any power plant fuelled with Deuterium and Tritium must 'breed' enough Tritium to sustain itself.Yet fusion power is futile because it cannot be deployed at a meaningful scale before 2050.This is the target date for Zero Carbon - hopefully limiting Global Warming to less than 2 C.So by this date all energy must be supplied from existing proven renewable sources such as Solar Photovoltaics, Wind Power, Hydro Power, sustainable Biomass and Solar and Deep Geothermal Heat.
This short presentation on Saving Electricity in Industry and Homes was given to an engineering society.
The data was valid at the time, but there have been considerable changes in some end-uses, especially lighting.