Self-passivating Metal Alloys with Reduced Thermo-oxidation (SMART) are under development for a fusion power plant. SMART Materials can adjust their properties depending on conditions: acting as a sputter-resistant plasma-facing material during plasma operation and suppressing the sublimation of radioactive tungsten oxide during an accident at temperature of up to 1000°C. Qualification of SMART materials under operational and accident conditions is completed. SMART can be prospective materials toward non-fusion applications under an extreme environment for future renewable energy sources: concentrated solar power receivers and high-temperature infrastructure components, such as modern heat-exchangers.