Wind farms deliver power only when the wind is blowing, and maximum generation only occasionally coincides with peak demand. Yet people need power all the time. Conventional batteries can help somewhat, but they’re expensive and only last a few hours. When the wind subsides, the system produces nothing. What can be done to enable wind farms to operate every hour of the year?
OUR SOLUTION 
HeatStorE™ long-duration heat battery with 24/7 dispatchability
247Solar’s HeatStorE™ long-duration thermal battery converts electricity from wind turbines to heat and stores it for 9 hours or more in inexpensive materials like sand or iron slag. Yet, HeatStorE operates almost exactly like conventional electrochemical batteries. And uniquely, HeatStorE provides guaranteed power even when fully discharged. The system provides its own backup by burning almost any locally-available fuel, including hydrogen, when its thermal storage is depleted. HeatStorE furnishes round-the-clock baseload power to enable wind farms to deliver 24/7 clean electricity.
Benefits include:
- Clean power day and night in any weather
- Increased wind farm revenues and profits, especially where wind power oversupply is substantial and electricity costs are negative
- Load shifting of 8 hours or more
- Participation in profitable arbitrage during periods of peak demand
- Low maintenance and operating costs
- No safety or environmental hazards
EXAMPLE
2 MW wind farm in Germany, where there is an enormous amount of wind and PV generation on the grid and supply often greatly exceeds demand.
Energy Requirements
- 2 MW long-lasting electricity storage to capture excess grid power, harness otherwise curtailed energy from wind, and facilitate 24/7 operation
Solution
- Ten 247Solar 200kWe, 1.8MWH HeatStorE™ long-duration thermal batteries
Outcome
- Up to €1 million additional revenue per year for the wind farm
- New revenue stream and profits
- Fully utilized output from the wind farm
- 24/7 operation from the wind farm
EXAMPLE COMPARISON
Contact: info@247solar.com