Agrivoltaics: Blue-green model for the future

Agrivoltaics is a blue-green glimmer of hope in an era of climate change. It refers to the simultaneous use of an area for agricultural production and the generation of electricity from photovoltaics. Until now, agricultural land and ground-based PV systems have mostly existed separately. Anyone who purposefully combines the two forms of land use can benefit from positive effects.

by Birgit Scheuch (guest post), , 0 Comments

Safety of PV systems: Your questions, our answers

The safety of a PV system depends, among other things, on the design of the overall system. Modern string inverters with integrated features enable a slim system design. This avoids potential sources of error, for example through additional cabling effort when installing module electronics. In a webinar "Analyzing PV system safety and the promise of optimizers" in June 2022, Dr. Heribert Schmidt from the Fraunhofer Institute for Solar Energy Systems ISE and SMA expert Hannes Knopf discussed the influence of different system designs on the safety of PV systems. Afterwards we received so many exciting questions on the topic, which we would like to share with you. Our colleague Hannes Knopf answered the most frequently asked questions here.

City with stable energy supply lighted at night.

Grid stability and secure returns with renewable energies

The energy transition will succeed only if the majority of our electricity is generated from renewable energy sources. But these are subject to weather-dependent fluctuations. The SMA Energy System for battery-storage power plants provides grid-forming capability, which is currently provided by decentralized power plants, and feeds green electricity with a stable frequency into the utility grid. This turns power plant owners and operators into key players on the electricity market.

by Daniel Duckwitz (guest post), , 0 Comments
Wechselrichter für Hochstrommodule: Auf die richtigen Werte kommt es an - Das große Missverständnis I DC max

Inverters for high-current modules:
the great IDC max misconception

The PV industry is using high-current modules to combat rising system costs. This type of module consists of M10 or larger PV cells, which can accommodate correspondingly high MPP currents (>12 A). Read on to find out what needs to be taken into account in the choice of inverter and what kind of misconceptions can commonly be encountered, as well as the difference between short-circuit current and maximum input current.

Five myths about DC power optimizers

When it comes to power electronics at the module level, the world’s photovoltaic markets are divided. While it is very common for solar technology specialists in the U.S. to install power optimizers (MLPE) in PV systems to meet the relevant installation regulations, these devices are the subject of considerable controversy in the rest of the world. Sweden, for example, has even issued a partial ban on the sale and installation of power optimizers from one major manufacturer because they do not meet the applicable electromagnetic compatibility (EMC) requirements.* So what’s the story with MLPE? What is really technically relevant, and what is just clever marketing? We resolve five common myths about power optimizers.

SMA EV Charger solaroptimiert laden

SMA EV Charger mobilizes surplus PV power and relieves the utility grid

The first 18 months of field experience with the charging solution SMA EV Charger have shown in Sunny Portal: more than half of the energy used for charging electric vehicles is provided by solar power from your own roof. It is no longer a secret that this allows you to be on the move in a particularly climate-neutral and cost-effective way. But did you know that it means you can even prevent expensive grid expansion and your contribution to the energy transition becomes even more valuable?

At work in Uganda: stable power supply for school and hospital

When Dennis Halpape and Alexander Krug journeyed to East Africa for the first time with Kassel-based association TOGETHER – Hilfe für Uganda [Aid for Uganda]  to install a solar system twelve years ago, there was rarely any light to be found for many kilometers in every direction in the region of Kooki after sunset. Today, when it gets dark, there are significantly more lights on in the houses there.

Eco safari: refuel with sunlight instead of diesel fuel

The Serengeti National Park in Tanzania, Africa, is UNESCO World Heritage natural site and tourist magnet. Lions, leopards, elephants, rhinos and buffaloes still live in their natural habitat here. In order to preserve the natural environment, Tanganyika Expeditions has relied on photovoltaics for the operation of its accommodations and on e-mobility for the safaris.

by Harald Olk (guest post), , 0 Comments