Renewable heat production providing energy to existing heat consuming systems do not need storage. A heat exchanger is sufficient.
In a perfect world all fossil fuels will be replaced by renewables. However, as discussed in my opening article An Opportunity As Big As Electricity & Transportation Combined, due to the overall increase in global energy demand, the use of fossil fuels is expected to be continuously increasing for the next several decades even though renewables take up a still larger market share.
Taking advantage of the relatively low costs of long-duration heat storage is one way to further increase renewables share of the energy market. This opportunity can be boosted tremendously if government-funded research programs and investors direct more funds towards development and commercialization of low-cost, high-temperature storage solutions.
In the meantime combining renewables and fossil fuels will get us far. This is a straight-forward procedure where a standard heat exchanger and simple control systems can do the job.

Interested in reading more? Please see the links to my other articles below. Additionally, a ‘Like’ from you will also be much appreciated as this should help direct more attention at the many business and climate opportunities the market for heat production offers.
Thank you for reading,
Jakob Jensen