Renewable energy generally does not solve this problem. In fact, it can exacerbate the problem, because the cost of its inputs tend to be high and very “front-ended,” leading to a need for subsidies. What is really needed is a way to replace lost tax revenue, and a way to bring down the high cost of new bridges and roads–that is a way to get back to the cost structure we had when oil (and other fossil fuels) could be extracted cheaply.
The Way Resource Extraction Reaches Financial Limits
When a company decides to extract a resource such as oil, gold, or fresh water, it looks for the least expensive source available. After many years of extraction, the least expensive sources become depleted, and the company must move on to more expensive resources. It always looks like there are plenty of resources left; they are just increasingly expensive to extract. Eventually an extraction limit is reached; this limit is a pricelimit.
As easy to extract resources become more depleted, it becomes necessary to invest more resources of every type in extraction (for example, manpower, oil, natural gas, fresh water), in order to extract a similar amount of the resource. I have called this the Investment Sinkhole problem.
The need to use greater resources in the process of resource extraction leaves fewer resources available for other purposes. Prices adjust to reflect this out of balance. If there is no substitute available for the resource that is reaching limits, the economy adjusts by contracting to match the amount of resource that is available at an affordable price. Some economists might call the situation “reduced demand at high price”. What the situation looks like, in terms most of us are used to using, is recession or depression.