247Solar Plants Outperform PV

Cost-Competitive With All Power Technologies

247Solar Plants operate every hour of every day, delivering power when needed, not just when the sun shines. Unlike the intermittent operation of PV that destabilizes electric grids, 247Solar Plants stabilize grids by adjusting their power output instantly to voltage fluctuations and changing demand. 247Solar Plants can be co-located with PV to provide grid stabilization and firmly-dispatchable power. 247Solar Plants store solar energy as heat in a proprietary 247Solar Thermal Storage System™ at a cost that is just 10% that of storing electricity in batteries.

The following table compares the targeted economics of a single 247Solar Plant (400 kWe) with a 400 kWe PV plant, both in the US, each as part of a 100 MW solar farm.

PV 247Solar Plants (targeted)
Capacity: kWe 400 400
Capacity Factor 20% 100%
Annual Operation: hours/yr 1752 8760
Total Annual Output: kWh/yr 525,600 2,628,000
Assumed Value of Power (tariff): $/kWh $0.10 $0.10
Annual Revenue: $/yr 52,600 263,000
Fuel Cost @$5/MBTU, 2760 hr/yr: $/yr 0 ($41,000)
Net Total Annual Revenue: $/yr 52,600 222,000
System CAPEX: $/kW ~1500 ~5000
Total System CAPEX: $ ~450,000 ~1,500,000
Total system CAPEX/total annual revenue 8.5/1 6.8/1
Land Requirements ~1.5 Hectacres ~2 Hectacres
Power Availability Sunshine Only 24/7


1) CAPEX for PV per kWh-year is 51% greater than for the targeted CAPEX for 247Solar Plants

2) Targeted CAPEX of a 247Solar Plant compared with gross annual revenue is superior to PV.

CHP (Combined Heating Power) versions of the 247Solar Plant can provide even greater superiority.

More Benefits, Fewer Disadvantages

Like PV, 247Solar Plants offer a low-risk, financeable, and rapidly-deployable turnkey clean power solution, but with 24/7 operation and near-zero environmental drawbacks. They require minimal custom engineering, using mostly proven, standardized and mass-produced components that can be sourced locally for rapid site assembly and shorter project cycle times. Required technical, construction and operational expertise readily matches locally-available talent.

247Solar Plant PV
Cost Higher CAPEX but 4 to 5 times more electricity produced per year than PV due to economical storage and fuel backup Lower CAPEX but intermittent energy so overall LCOE similar
Dispatchability Low cost, high efficiency thermal storage allows for continuous production and baseload power Battery storage is possible but very expensive and inefficient – remains intermittent
Efficiency High operating temperatures and efficiency (up to 70% using the waste heat) Low sun to electricity efficiency 15-20% (module level), 12-15% (power plant level)
Water Use Very low. Primarily for heliostat washing. Very low. Primarily for panel washing
Industrial Integration Generates dispatchable electricity and heat/steam for industrial processes such as enhanced oil recovery, desalination, drying, and other applications Electricity generated by PV can be used to support industrial processes but needs some form of base load source to compensate for its intermittency
Land Use Can be deployed on both flat land or on sites with small slopes Can be deployed on flat land or on sites with small slopes, but larger areas required
Localization Significant % of supply chain can be delivered locally Local content is restricted, some PV support structures can be supplied locally

Added Advantages of using 247Solar Technology

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