green hydrogen

The Swiss startup presented the battery plus hydrogen idea to a Symposium this week.

The projects, equivalent to 1.88 GW of electrolyzer capacity, were withdrawn after choosing not to continue with the agreement procedure or for being unable to provide a signed completion guarantee. As a result, ten hydrogen projects representing 774 MW in capacity from the reserve list have been invited to prepare grant agreements.

Scientists at Italy’s University of Cagliari explored the integration of a water electrolyzer with a floating PV-pumped hydro energy storage system. They found that under high curtailment conditions, hydrogen production helped to stabilize system efficiency and lower the levelized cost of electricity when compared to a system without the electrolyzer.

Scientists in Malaysia have conducted a techno-economic-environmental study of a green fueling system for a ferry that runs between islands in their home country. Using 40,000 solar panels, they were able to power two round trips round-trips per day. Annual CO₂ reduction was measured at 23.75 million kg.

Scientists in India have designed a system that uses PV panels, a proton-exchange membrane fuel cell, battery storage, and a supercapacitor. It also relies on an adaptive neuro-fuzzy inference system-based MPPT that reportedly achieves an efficiency of 98.7%.

A global scientific team has designed a novel multigeneration system based on renewable energy and liquid air energy storage, then used soft computing techniques to optimize its operation. The optimized levelized costs of hydrogen (LCoH) were $1.52/kg and $5.22/m³.

Researchers have analyzed the potential implementation of green methanol from CO2 capture in existing industries, based on European GIS data. While they found 9,213 theoretically viable municipalities, the number fell to 3,016 when considering the space needed for a PV installation around the plant.

Scientists in Austria have conducted a risk analysis for four setups for coupled PV-electrolyser systems, and tested them under three use cases. They calculated failure probability as well as the levelized cost of hydrogen and its risk-weighted variant.

New research from Saudi Arabia shows that PV, concentrated solar power (CSP), or hybrid PV-CSP systems could significantly reduce the levelized cost of hydrogen. CSP offers higher capacity factors, but PV-driven electrolysis provides the lowest projected cost for hydrogen production.

A European research team has assessed the levelized cost of hydrogen across 31 African countries and has concluded that importing green hydrogen from Africa to European is economically unfeasible by 2030, with prices ranging from $10.2/kg to $3.8/kg.