DynEl

DynElectro is happy to announce the results from the project ’DynEl ’ funded by Innovationsnetværket Smart Energy.

A demonstration of electrothermal balanced operation AC:DC operation at with a commercial 1 kW SOEC stack. The AC:DC operation controls the temperature inside the SOEC stacks. This allows us to maintain a constant temperature inside the stacks, independent of the overall load. The decoupling of the temperature profile inside the stack and the load to the stack enables rapid variations of the system load without damaging the stacks. This opens for dynamic PtX. Dynamic PtX is required for production of green transportation fuels while balancing the load from the PtX system with the intermittent power production from wind and solar.

A report written together with Centrica PlC and Hybrid Greentech analyzing the profitability of co-producing hydrogen and ancillary services to either the FCR, FCR-N or the FCR-D markets.

A concept and design for a cost efficient power converter enabling AC:DC operation of SOEC stacks in a MW-scale PtX system. The scalable converter is uniquely designed to avoid noise on the electricity grid while providing dynamic operation of the SOECs. In addition the controller can provide capacity for load-balancing and ancillary services such as reactive power, voltage control or frequency containment reserves (FCR).

The published report shows high internal rates of return (IRR) with a 10-year investment horizon can be achieved with small- (~0.33 MW), and medium- (~17 MW) scale SOEC systems. If the SOEC lifetime can be increased to 5 years, the IRR exceeds that of AEC-based systems.

IRR_{10 yr}, for Small- (0.33 MW) and Medium-sized (17 MW) SOEC based systems co-producing H₂ and FCR reserves. IRR_{10 yr} is calculated for 2 and 5 year SOEC stack lifetime using forecasted 2025 spot market electricity prices incl. tariffs [1] and turn-key SOEC system prices [2].