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With increasing pressure to get rid of the world’s dependence on fossil fuels to reach the world’s climate goals, the use of alternative fuels for propulsion are needed. This is a challenge for the maritime industry, where ferries have good properties to become renewable by the usage of batteries. Their routes are mostly fixed routes and with good infrastructure established at each stop, fully bat
The rapid expansion of intermittent renewable energy sources has introduced substantial challenges to both the stability of the electrical grid and the economic viability of incumbent wind farms. In light of recent regulatory amendments within the energy market, stakeholders are compelled to adjust their operational strategies. Concurrently, the expansion of wind power has exacerbated price cannib
As the global energy sector undergoes a necessary transition toward renewable sources, Mexico has committed to significantly expanding its clean energy capacity. The Baja California Peninsula, with its rich solar and wind resources, presents a unique opportunity to lead this shift. The peninsula is composed of two states: Baja California and Baja California Sur. Baja California operates one electr
The coupled relationships among water, energy, and emission, i.e., water-energy-emission nexus (WEEN), are found to be spatial-temporally characterized. This research is aimed at evaluating the spatial-temporal characteristics of the WEEN of the selected 227 coal-fired power plants in China from 2012 to 2014 by employing the entropy weighting method. Firstly, the WEEN performances (the sub-indicat
Distributed generation, DG, introduces multi-generator grids and new modes of operation. DG will likely introduce power electronic, PE, converters on a large scale at the low- and medium-voltage levels. DC injection into the AC grid is a threat from grid-connected PE converters that are badly structured. Low DC currents in AC current are difficult to measure at those low levels decided in IEEE™ 15
Det svenska elnätet är i behov av stora investeringar och flexibilitetsåtgärder för att upprätthålla ökad efterfrågan på energi och effekt, samt ökad andel variabel förnybar elproduktion. Ett sådant tillvägagångssätt är det ökade införandet av effekttariffer för småkunder bland svenska nätoperatörer som syftar till att uppmuntra slutkonsumenter att utjämna last. Med batterilagring i hemmet kan konThe Swedish grids are in need of large investments and flexibility measures in order to sustain increased power and energy demand and increased penetration of intermittent renewable electricity production. One such measure is the larger introduction of power tariffs among Swedish network operators for their small customer segment, intended to incentivize end consumers to level out load. With resid
Flygindustrin närmar sig ett vägval där sektorn kommer behöva bestämma sig för vilken typ av framtida energimöjligheter den ska använda sig av. En väg är att även fortsättningsvis använda sig konventionellt flygbränsle vilket med stor sannolikhet kommer leda till fortsatt ökande utsläpp globalt, och den andra vägen leder sektorn till hållbart flygbränsle, vätgasdrift och batteridrivna elektriska f
Sveriges elsystem står inför en rad kommande utmaningar. En lovande lösning till många av dessa är efterfrågeflexibilitet. Men vad är byggnaders möjligheter och begränsningar att vara flexibla i sin elanvändning? Förutsättningarna för elförsörjningen i Sverige förändras i takt med att kärnkraften gradvis fasas ut och ersätts med väderberoende elproduktion i form av vind- och solkraft. Detta sker Sweden is heading towards an energy system with less nuclear power and more intermittent energy sources. Together with the coming electrification of the transport and industry sector, this challenges the future stability of the Swedish power system. However, a part of the solution could be that consumption of electricity temporarily is adjusted to facilitate the operation of the power system, reco
The incineration furnace at National Veterinary Institute (SVA) in Uppsala, Sweden, runs approximately 2,150 hours a year and generates a large amount of waste heat. Some of this heat is partially recovered, and is used for heating one of the main buildings during the furnace operation. However, around 2,000 MWh is wasted annually due to unavailability of any storage system. This wasted heat is ap
Among concentrating solar power technologies, direct steam generation solar tower power plants represent a promising option. These systems eliminate the usage of heat transfer fluids allowing for the power block to be run at greater operating temperatures and therefore further increasing the thermal efficiency of the power cycle. On the other hand, the current state of the art of these systems doe
Environmental and sustainability challenges Nature-based future solutions Biodiversity and ecosystems Climate research Middle East Nanoscience Sustainable production We have a responsibility to leave our planet in a state that ensures a good life for future generations. Our research contributes to a better understanding of the problems around us, but also to solving current and future environmenta
https://www.lunduniversity.lu.se/research-and-innovation/focus-areas/sustainable-planet - 2026-06-03
A thematic collaboration initiative at Lund University Malmö, Helsingborg and Lund aim to be climate-neutral cities by 2030. Lund University, in partnership with Malmö University and the Swedish University of Agricultural Sciences (Alnarp), is supporting their climate goals through research and collaboration. Accelerating the transformation towards climate-neutral cities will require a mutual exch
Coherent harmonic generation can be obtained by means of frequency up-conversion of a high-power external laser focused into the first undulator of an optical klystron. The standard configuration is based on a single-pass device, where the seed laser is synchronized with an electron beam entering the first undulator of the optical klystron after being accelerated using a linear accelerator. As an
Vi vet att laddade partiklar sänder ut elektromagnetisk strålning då de tvingas följa en krökt bana. Denna strålning kallas synkrotronstrålning, och upptäcktes i mitten av 1900-talet. Sedan dess har denna typ av strålning funnit tillämpningar inom flera forskningsområden såsom kemi, biologi, medicin och materialvetenskap. För att uppfylla de växande kraven på vissa strålningsegenskaper, är partike
