Technology

European power purchase agreement (PPA) prices fell in February amid sliding energy commodity prices, but deal flow held steady, says Swiss energy consultancy Pexapark, noting that a “landmark” 40-year, 15 MW solar PPA was signed in Wales.

The world’s largest rolling stock manufacturer says that its new container storage system uses LFP cells with a 3.2 V/314 Ah capacity. The system also features a DC voltage range of 1,081.6 V to 1,497.6 V.

As the global transition toward sustainable energy intensifies, building-integrated photovoltaics (BIPV) has emerged as a critical innovation in merging renewable energy with architectural design. The recently published guidebook “Building-Integrated Photovoltaics: A Technical Guidebook,” edited by IEA PVPS Task 15 experts Nuria Martín Chivelet, Costa Kapsis, and Francesco Frontini, offers a comprehensive resource for architects, engineers, and urban planners looking to integrate BIPV into the built environment. This article explores the book’s key insights, including applications, challenges, and future pathways.

Scientists in Saudi Arabia have simulated a solar-powered single-effect absorption cooling system that uses water-lithium bromide as a working fluid, under the environmental conditions of Riyadh. Exergy and exergy rates are calculated for each level of the system, with optimal generator performance being found to peak at 80 C.

An Italian research team has found that radicchio seedlings grown in a lab-scale greenhouse with a perovskite solar PV roof exhibited faster growth and larger leaves than the bare glass reference. In addition, simulations of such a PV roof revealed a positive energy balance, satisfying the energy demands of a typical greenhouse located in Italy.

German researchers have found that the majority of subsidies required to reach the country’s renewable energy targets have already been paid, with an estimated 80% to 90% of subsidies for units in operation covered. The costs of newer renewable energy sources have decreased and are often competitive with remunerations from the wholesale market.

Researchers at Thailand’s Vidyasirimedhi Institute of Science and Technology demonstrated a novel hydrogel that has high cooling effect on silicon PV panels. The lightweight technology purportedly enables a temperature drop of 23 C, from 70 to 47 C, and a relative 12.3% power conversion efficiency increase.

Researchers in Canada have compared strawberry growth under uniform illumination from semi-transparent thin-film cadmium telluride panels and non-uniform illumination from semi-transparent crystalline silicon modules. Their analysis considered metrics such as fresh weight, height, leaf count, chlorophyll content, soil temperature and humidity.

An international research team has conceived a dual-component controller for three-phase inverters that can reportedly achieve faster settling times, reduced overshoot and more stable current tracking compared to conventional controllers.

The Italian manufacturer said its new heat pumps use R454B as a refrigerant and have coefficient of performance of up to 3.35.