Grids & Integration

An international research team has examined the potential use of hybrid microgrids that integrate PV and biogas for electric vehicle recharging in Karnataka, India. Their findings indicate that this combined approach offers economic and environmental benefits compared to separate biogas and PV systems.

The new optimization method is intended at designing smaller and cheaper heat pumps. Its creators said the new approach also enables higher Opex savings and an improved coefficient of performance.

A research team in Spain has developed an hourly mathematical model that reportedly allows for the optimal management of grid-connected renewable generation facilities and pumped hydro-energy storage with reversible pump turbine. The scientists tested the model on a potential pumped hydro-solar-wind complex in northern Spain and found that the combination of the three technologies may achieve considerable savings.

Moroccan researchers have investigated the potential energy savings of PV systems integrated with biomaterial-based walls in rural areas. They say that solar-powered earth homes could achieve a levelized cost of electricity (LCOE) of $0.218/kWh.

Solar industry veteran Jigar Shah, the director of the US Department of Energy’s (DoE) Loan Programs Office, says that virtual power plants are the path to success, as solar net metering now faces an uncertain future.

In the third week of September, European electricity markets prices fell compared to the previous week. The decline was due to lower demand and a significant increase in wind energy production in several markets, which offset increasing gas and CO2 prices. On September 25, TTF gas futures reached their highest level since early April and on September 18, Brent reached its highest settlement price since November 2022.

Researchers in Sweden investigated the complex non-linear tradeoffs between capacity expansion costs and reliability levels of off-grid PV mini-grids and found that capacity expansion based solely on cost-minimization may result in several reliability issues.

Researchers from the Netherlands have assessed the potential integration of heat pumps, electric vehicles, and PV systems into distribution grids. They have discovered that suburban grids could face a higher risk of overload. By using actual data from Dutch distribution grid operators, they believe their methodology could be applied to study energy systems in other nations.

Swiss scientists claim no distribution grid expansion is needed to increase the share of solar PV in energy systems, but they warn that priority dispatch for PV during peak loads may become a serious issue in the years to come. Among a range of recommendations, they proposed reducing peak loads by developing grid-serving behavior with PV system owners having to do their part.

Almost every weekend since Easter, European generators have been paid to power down plants but some Northern European nations are experiencing record electricity prices. An energy system set up for fossil fuels is in urgent need of reform, according to Gerard Reid, co-founder and partner of Alexa Capital.