The increasing share of renewable production like wind and PV poses new challenges to our energy system. The intermittent behavior and lack of controllability on these sources requires flexibility measures like storage and conversion. Production, consumption, transportation, storage and conversion systems …

Over the past decade, the nonprofit sector has seen drastic changes in regard to the way it attracts resources; government subsidies have decreased substantially and nonprofit organizations report ever fewer donations - leaving them in search of additional sources of revenue. As a result, many nonprofit …