Residential PV

The latest government installation figures reveal a slower start to the year for the United Kingdom, with small-scale installations accounting for the majority of additions. As the UK General Election approaches, there are calls from industry for the next government to act quickly on the issues hindering capacity expansion.

In a new weekly update for pv magazine, Solcast, a DNV company, reports that a strong polar jet stream and a record-breaking heat dome in May resulted in a stark contrast in irradiance patterns across North America. The western and central USA, along with Mexico, experienced higher than normal irradiance, while the Gulf and East Coast regions faced lower irradiance.

The novel heat pump concept combines solar energy with chemical storage and reportedly consume 75% less electricity than conventional heat pumps. The system relies on a battery and a heat storage tank that can be used either separately or simultaneously, depending on the outdoor conditions.

The French authorities might be poised to lower the feed-in tariff (FIT) threshold for rooftop PV from 500 kW to 100 kW. France’s Direction générale de l’énergie et du climat (DGEC) says the proposed measure is designed to reduce the expense of the FIT scheme, despite opposition from trade groups such as Enerplan and SER.

Texas is uniquely suited to adopt virtual power plant (VPP) technology due to its competitive, deregulated market. Its success highlights the “perverse incentive” of vertically integrated utilities in other US states to make capital expenditures without discretion to raise profits.

Analysts at a recent event in Dhaka called for the removal of high import duties on solar products in Bangladesh, as it could reduce PV system prices by up to 11%.

Scientists in India have proposed using a multilayer neural network to find line-to-ground, line-to-line, and bypass diode faults in PV module strings. They tested the new approach on a 22.5 kW solar array and reportedly achieved “competitive” accuracy results.

Researchers in Italy have found that combining residential air heat pumps with air-geothermal heat exchangers may reduce power consumption by up to 30%. They tested the proposed combination using Matlab in a passive single-family building located in Valtellina, northern Italy.

Brazil added 6 GW of new PV capacity between January and April. ABSolar, the Brazilian PV association, says the country has now cumulatively deployed 43 GW of solar capacity, with around 24 GW from PV systems below 75 kW in size.

Italy installed 1.72 GW of new solar capacity in the first quarter, bringing its cumulative installed PV capacity to 32.0 GW by the end of March, according to Italia Solare, the nation’s solar energy association.