Our Renewable Future
Richard Heinberg (2016)
In this 2016 presentation, Richard Heinberg talks about his new book (with David Fridley) Our Renewable Future. Both the book and talk focus mainly on the ease with which renewable energy can replace fossil fuels in our current industrial economy. He argues the transition is essential, not only to reduce the impact of catastrophic climate change and ocean acidification, but to address growing global economic and political instability (ie resource wars in the Middle East over dwindling oil and natural gas reserves).
- Electric power generation – coal and gas-fired power plants are fairly easy to replace with wind and/or solar generation. However Heinberg also argues that homes need to be made more efficient (in terms of heating and cooling) to reduce peak load demand. Renewable technologies are not good at ramping up at short notice. We have had the technical know-how for decades to produce buildings requiring 1/20th of the energy we presently use to heat them. Up until now, we have lacked the political will to change local building codes accordingly.
- Personal transportation – Heinberg argues that electric cars aren’t a panacea. Because they are so energy intensive to produce, only fairly wealthy people will be able to afford them. He feels there needs to be more focus on increasing public transport and adapting our communities to facilitate active transport, such as walking and cycling.
- Mass transit – he strongly advocates increased use of rail, by far the most efficient form of transit for both people and freight. For transcontinental travel, high speed trains are much more energy efficient than air travel and are easily electrified.
- Shipping – ocean freighters are already quite energy efficient compared to air transport. Using kite sails to propel them can reduce their energy consumption by 60%
- Food production – at present we expend 12 fossil fuel calories for every calorie of food produce. In additions to our chemical fertilizers, pesticides and herbicides (all derived from fossil fuels), we also use fossil fuels in food processing and packaging, to run farm machinery and to transport food halfway around the world. The transition in food production has already begun, with strong organic and buy local movements worldwide. Heinberg also supports the growing movement to use sustainable agriculture to sequester carbon ((carbon farming, aka the 4 per 1,000 initiative – see The Soil Solution to Climate Change).
- Construction – most of our commercial buildings are made of concrete and steel, which both require intensive fossil fuel input in production. Here he recommends a transition to recycled and more natural building materials and a conscious effort to design buildings to human scale. The splurge in high rise construction of the 20th century was only possible due to a glut of cheap fossil fuel.
- Manufacturing – most manufacturing has already been electrified.
- Consumer electronics – Heinberg argues we need to make Smartphones more easily upgradable – enabling each of us to purchase one per lifetime. The pressure to replace Smartphones every year is deliberate “planned obsolescence” to increase profits.
- Plastics, paint, synthetics – natural ingredients (hemp can be used for all three) tends to be cheaper, more durable and less harmful to the environment.