CSP: Concentrated Solar Power Store surplus heat from solar field during day-time and discharge to steam turbine when the sun is down

Why:

  • Increase dispatch ability by providing peak power supply during late evening and mornings, or round-the-clock (base load) production  
  • Enable power production during cloud covers in day-time   
  • Reduce levelized cost of energy (LCOE)  
  • Enable CSP to take on small/medium size and moderate temperature applications requiring steady energy output 

Other

(coal, gas, nuclear, biomass, waste incineration, geothermal) Time-shift thermal energy

Why:

  • Increase flexibility by reducing start-up times and increasing ramp rates
  • De-couple heat production from electricity production
  • Enable electricity production on-demand from constant heat input from boiler

Why:

  • Balancing and time-shifting production to meet demand
  • Smoothening production output from variable renewable energy sources such as wind and PV
  • Demand-side management and peak load shaving
  • Ancillary services (voltage, frequency, reactive power)
  • Enhance reliability of supply

Combined Heat and Power (CHP) Convert electric energy to heat, store and re-supply as electricity and heat at a later time period

Why:

  • Increase efficiency by operating in a combined heat and power mode, supplying low-grade heat (<100°C) as usable heat to industries or district heating systems 
  • Reduce energy costs • Increase heat supply reliability through fuel diversification 
  • Reduce carbon footprint of industries by using renewable electricity instead of fossil fuels

Heat only Convert electric energy to heat, store and re-supply as high grade heat (>100°C) - typically process steam

Why:

  • Operating in a heat only mode, supplying high grade heat (>100°C) typically as process steam to industries
  • Reduce energy costs 
  • Increase steam supply reliability through fuel diversification 
  • Reduce carbon footprint of industries by using renewable electricity instead of fossil fuels

Cold only Convert electric energy to cold, store and re-supply as cold at freezing temperatures (<-20°C)

Why:

  • Enable steady round-the-clock freeze capabilities for food preservation 
  • Reduce food spillage due to unreliable electricity supply
  • Reduce electricity costs

Waste Heat to Power (WHP) Time-shift thermal energy from waste heat recovery (WHR) systems

 Why:

  • Produce electricity on-demand 
  • Reduce peak power consumption of industrial facility
  • Ride through transients in waste heat production 
  • Increase economics of existing WHP systems

The diagram above shows an overview of the various storage solutions that EnergyNest provides and how these interconnect and integrate pertaining to the wider energy and powergrid system.