A novel role for bioenergy: A flexible, demand-oriented power supply

Demand-Orientated Power Production from Biogas: Modeling and Simulations under Swedish Conditions

“…11,16 However, in 2012, a flexibility premium was introduced in Germany, which encourages technological development for demand-orientated production. 8,11 Financial subsidies for higher flexibility can also be expected in Sweden in the future. 5 From the plant owner's perspective, selling electricity when demand is high can increase income.…”

“…8,11,13 However, flexible biogas production can be achieved by feeding management, which includes varying feeding intervals and rate and substrate composition. In order to achieve a rapid feeding response, easy degradable substrates such as sugar beet, cereals, etc.…”

“…are advantageous. 8,[11][12][13]22 Use of slowly degradable substrates may be feasible in combination with biological, chemical or physical pre-treatment, which increase substrate accessibility to microbes and lead to faster degradation. 23 Mauky et al 12 analysed feeding management strategies with sugar beet silage, maize silage and cattle manure in long term laboratory-scale experiments in continuously stirred tank reactors (CSTR), and found that high flexibility of biogas production could be achieved.…”

“…8,[11][12][13][14] The biogas can be used in gas engines or turbines with comparatively short start-up times. 8,15 Conventional operation of biogas CHP plants aims at continuous biogas and CHP production, however. For example; most of the over 7500 biogas plants in Germany have more than 7000 full load hours per year.…”

“…4,[8][9][10] In this context, bioenergy has the advantage of being both renewable and storable, and use of biogas from anaerobic digestion (AD) for power balancing has gained interest recently. 8,[11][12][13][14] The biogas can be used in gas engines or turbines with comparatively short start-up times. 8,15 Conventional operation of biogas CHP plants aims at continuous biogas and CHP production, however.…”