Which she knows is not possible:

Replacement of oil by alternative sources

While oil has many other important uses (lubrication, plastics, roadways, roofing) this section considers only its use as an energy source. The CMO is a powerful means of understanding the difficulty of replacing oil energy by other sources. SRI International chemist Ripudaman Malhotra, working with Crane and colleague Ed Kinderman, used it to describe the looming energy crisis in sobering terms.[13] Malhotra illustrates the problem of producing one CMO energy that we currently derive from oil each year from five different alternative sources. Installing capacity to produce 1 CMO per year requires long and significant development.

Allowing fifty years to develop the requisite capacity, 1 CMO of energy per year could be produced by any one of these developments:

4 Three Gorges Dams,[14] developed each year for 50 years, or 52 nuclear power plants,[15] developed each year for 50 years, or 104 coal-fired power plants,[16] developed each year for 50 years, or 32,850 wind turbines,[17][18] developed each year for 50 years, or 91,250,000 rooftop solar photovoltaic panels[19] developed each year for 50 years

The world consumes approximately 3 CMO annually from all sources. The table [10] shows the small contribution from alternative energies in 2006.

http://en.wikipedia.org/wiki/Cubic_mile_of_oil

“To provide most of our power through renewables would take hundreds of times the amount of rare earth metals that we are mining today,” according to Thomas Graedel at the Yale School of Forestry & Environmental Studies. So renewable energy resources like windmills and solar PV can not ever replace fossil fuels, there’s not enough of many essential minerals to scale this technology up. http://energyskeptic.com/2014/high-tech-cannot-last-rare-earth-metals/

Renewable Penetration https://gailtheactuary.files.wordpress.com/2017/12/iea-primary-energy-suppy-1973-and-2015.png

Renewable Energy’s $2.5 Trillion Problem https://www.technologyreview.com/s/611683/the-25-trillion-reason-we-cant-rely-on-batteries-to-clean-up-the-grid/

Renewable energy 'simply won't work': Top Google engineers

Two highly qualified Google engineers who have spent years studying and trying to improve renewable energy technology have stated quite bluntly that whatever the future holds, it is not a renewables-powered civilisation: such a thing is impossible.

Both men are Stanford PhDs, Ross Koningstein having trained in aerospace engineering and David Fork in applied physics. These aren't guys who fiddle about with websites or data analytics or "technology" of that sort: they are real engineers who understand difficult maths and physics, and top-bracket even among that distinguished company.

Even if one were to electrify all of transport, industry, heating and so on, so much renewable generation and balancing/storage equipment would be needed to power it that astronomical new requirements for steel, concrete, copper, glass, carbon fibre, neodymium, shipping and haulage etc etc would appear.

All these things are made using mammoth amounts of energy: far from achieving massive energy savings, which most plans for a renewables future rely on implicitly, we would wind up needing far more energy, which would mean even more vast renewables farms – and even more materials and energy to make and maintain them and so on. The scale of the building would be like nothing ever attempted by the human race.

In reality, well before any such stage was reached, energy would become horrifyingly expensive – which means that everything would become horrifyingly expensive (even the present well-under-one-per-cent renewables level in the UK has pushed up utility bills very considerably).

http://www.theregister.co.uk/2014/11/21/renewable_energy_simply_wont_work_google_renewables_engineers/