Certainly high energy costs, in the absence of any action to reduce energy usage, reduce standards of living. Ultimately almost every aspect of our "comfortable" life comes from expending energy - heating, concrete, entertainment, transport, home appliances, fertiliser, mechanised farming - at the heart of everything is external energy expenditure to make us comfortable.
However, in most cases comfort isn't proportional to energy expended. For a given heat, a well insulated room is as comfortable as a badly insulated one - but with less energy input. A modern computer is as useful (more so) than a Pentium 4, but with less energy input. An LED bulb provides as much light as an incandescent, but with less energy input. When energy becomes expensive, it makes energy saving worthwhile, which makes the return on investment higher, which draws in R&D money.
Honestly - I don't know for sure whether high energy costs will drive innovation, or just lower living standards for everyone. However, it's pretty clear that relying on fossil fuels isn't a good long term strategy, and that at historical energy prices (which don't take into account externalities at all) there's essentially no headroom for new energy saving R&D. High energy prices make efficiency improvements and novel energy production highly lucrative - and then capitalism can do the rest.
However, in most cases comfort isn't proportional to energy expended. For a given heat, a well insulated room is as comfortable as a badly insulated one - but with less energy input. A modern computer is as useful (more so) than a Pentium 4, but with less energy input. An LED bulb provides as much light as an incandescent, but with less energy input. When energy becomes expensive, it makes energy saving worthwhile, which makes the return on investment higher, which draws in R&D money.
Honestly - I don't know for sure whether high energy costs will drive innovation, or just lower living standards for everyone. However, it's pretty clear that relying on fossil fuels isn't a good long term strategy, and that at historical energy prices (which don't take into account externalities at all) there's essentially no headroom for new energy saving R&D. High energy prices make efficiency improvements and novel energy production highly lucrative - and then capitalism can do the rest.