Intersolar Europe restart 2021: solar power is becoming increasingly popular in Poland

UK Home Solar Panel Installation drives self-consumption as PV panels, hybrid inverters, and smart meters cut grid demand, enable EV charging, and prepare battery storage, even in cloudy winters, with app-based monitoring and MCS-certified installers.

Key Points

A residential PV setup reducing grid reliance via panels, hybrid inverters, smart meters, and battery-ready design.

✅ Cuts grid use; boosts self-consumption with PV generation

✅ Hybrid inverters enable future battery storage integration

✅ Smart meter and app monitor output, EV charging patterns

In a town north of London, the weather's been cloudy over the winter months. But it didn't stop this homeowner from installing solar panels in December.

On his smart metre, Kumi Thiruchelvam looks satisfied at the "0 watts" showing up under electricity. It's about 10 am, and he's not using any electricity from the grid.

Cost of installation? Between £12,000 and £13,000 (€13,500-€14,500), a fair chunk of savings, even for Thiruchelvam, who lives on a private avenue in Luton.

The investment was common sense for him following the surge in energy prices caused by the Russian invasion of Ukraine.

According to the Office of National Statistics, electricity prices in the UK had increased by 67 per cent in January 2023 compared to January 2022, while pilots show parked EVs can earn from grids in Europe, offering some relief.

Solar power installations doubled in 2022 compared to 2021, according to MCS, the standards organisation in charge of solar installations, a shift aligned with the UK grid's net-zero transition underway today.

"We've had a combination of soaring energy prices around the world, and then also we've increased our electricity consumption in the home through a number of reasons, including electric vehicles and emerging EV-solar integration trends," says Thiruchelvam.

His family owns a big house and no less than three electric vehicles, some of which can now power a home for days during outages, so their electricity consumption is higher than the normal household, about 12,000 kWh per year.

Around two-thirds should now be provided by solar panels, and EV owners can sell electricity back to the grid in some schemes as well, diversifying benefits.

"We originally sought the configuration to be rear, which is where the sun comes up, but we went for the front because it spends more time in the front throughout most of the year than in the rear. Also, there's more shade in the rear with trees," he says.

To get a quote for the installation, Thiruchelvam used Otovo, a Norwegian company which recently launched in the UK.

Using their app, he can monitor the electricity generated by his photovoltaic (PV) installation from his phone. The data comes from the inverters installed in the attic.

Their role is to change the direct current generated by the solar panels into alternating current to power appliances in the house safely.

They also communicate with the grid and monitor the electricity generated, supporting emerging vehicle-to-building charging strategies for demand management.

"We went for two hybrid inverters, allowing me to use a battery in the future or tap stored EV energy for buildings if needed," says Thiruchelvam.

"But because battery technology is still evolving, I chose not to. And also I viewed at that time that we would be consuming everything we'd be generating. So we didn't. But most likely I will upgrade the system as we approach summer with batteries."

Related News

• Electricity Forum News

• Renewable Energy News

Thermoradiative Diode Power leverages infrared radiation and night-sky cooling to harvest waste heat. Using MCT (mercury cadmium telluride) detectors with photovoltaics, it extends renewable energy generation after sunset, exploiting radiative cooling and low-power density.

Key Points

Technology using MCT infrared diodes to turn radiative Earth-to-space heat loss into electricity, aiding solar at night.

✅ MCT diodes radiate to cold sky, generating tiny current at 20 C

✅ Complements photovoltaics by harvesting post-sunset infrared flux

✅ Potential up to one-tenth solar output with further efficiency gains

Conventional solar technology soaks up rays of incoming sunlight to bump out a voltage. Strange as it seems, some materials are capable of running in reverse, producing power as they radiate heat back into the cold night sky environment.

A team of engineers in Australia has now demonstrated the theory in action, using the kind of technology commonly found in night-vision goggles to generate power, while other research explores electricity from thin air concepts under ambient humidity.

So far, the prototype only generates a small amount of power, and is probably unlikely to become a competitive source of renewable power on its own – but coupled with existing photovoltaics technology and thermal energy into electricity approaches, it could harness the small amount of energy provided by solar cells cooling after a long, hot day's work.

"Photovoltaics, the direct conversion of sunlight into electricity, is an artificial process that humans have developed in order to convert the solar energy into power," says Phoebe Pearce, a physicist from the University of New South Wales.

"In that sense, the thermoradiative process is similar; we are diverting energy flowing in the infrared from a warm Earth into the cold Universe."

By setting atoms in any material jiggling with heat, you're forcing their electrons to generate low-energy ripples of electromagnetic radiation in the form of infrared light, a principle also explored with carbon nanotube energy harvesters in ambient conditions.

As lackluster as this electron-shimmy might be, it still has the potential to kick off a slow current of electricity. All that's needed is a one-way electron traffic signal called a diode.

Made of the right combination of elements, a diode can shuffle electrons down the street as it slowly loses its heat to a cooler environment.

In this case, the diode is made of mercury cadmium telluride (MCT). Already used in devices that detect infrared light, MCT's ability to absorb mid-and long-range infrared light and turn it into a current is well understood.

What hasn't been entirely clear is how this particular trick might be used efficiently as an actual power source.

Warmed to around 20 degrees Celsius (nearly 70 degrees Fahrenheit), one of the tested MCT photovoltaic detectors generated a power density of 2.26 milliwatts per square meter.

Granted, it's not exactly enough to boil a jug of water for your morning coffee. You'd probably need enough MCT panels to cover a few city blocks for that small task.

But that's not really the point, either, given it's still very early days in the field, and there's potential for the technology to develop significantly further in the future.

"Right now, the demonstration we have with the thermoradiative diode is relatively very low power. One of the challenges was actually detecting it," says the study's lead researcher, Ned Ekins-Daukes.

"But the theory says it is possible for this technology to ultimately produce about 1/10th of the power of a solar cell."

At those kinds of efficiencies, it might be worth the effort weaving MCT diodes into more typical photovoltaic networks alongside thin-film waste heat solutions so that they continue to top up batteries long after the Sun sets.

To be clear, the idea of using the planet's cooling as a source of low-energy radiation is one engineers have been entertaining for a while now. Different methods have seen different results, all with their own costs and benefits, with low-cost heat-to-electricity materials also advancing in parallel.

Yet by testing the limits of each and fine-tuning their abilities to soak up more of the infrared bandwidth, we can come up with a suite of technologies and thermoelectric materials capable of wringing every drop of power out of just about any kind of waste heat.

"Down the line, this technology could potentially harvest that energy and remove the need for batteries in certain devices – or help to recharge them," says Ekins-Daukes.

"That isn't something where conventional solar power would necessarily be a viable option."

Related News

• Electricity Forum News

• Power Generation News

Lithuania Wind Power Investment accelerates renewable energy expansion with utility-scale wind farms, solar power synergies, streamlined permits, and grid integration to cut imports, boost energy independence, and align with EU climate policy.

Key Points

Lithuania Wind Power Investment funds wind projects to raise capacity, cut imports, and secure energy independence.

✅ 700-1000 MW planned across three wind farms over 3 years

✅ Simplified permitting and faster grid connections under new policy

✅ Supports EU climate goals and Lithuania's 2030 energy independence

The current unstable geopolitical situation is accelerating the European Union countries' investment in renewable energy, including European wind power investments across the region. After Russia launched war against Ukraine, the EU countries began to actively address the issues of energy dependence.

For example, Lithuania, a country by the Baltic Sea, imports about two-thirds of its energy from foreign countries to meet its needs, while Germany's solar boost underscores the region's shift. Following the start of the Russian invasion in Ukraine, the Lithuanian Government urgently submitted amendments to the documents regulating the establishment of wind and solar power plants to the Parliament for consideration.

One of Lithuania's priority goals is to accelerate the construction and development of renewable energy parks so that the country will achieve full energy independence in the next eight years, by 2030, mirroring Ireland's green electricity target in the near term. Lithuania is able to produce the amount of electricity that meets the country's needs.

Ramūnas Karbauskis, the owner of Agrokoncernas Group, one of the largest companies operating in the agricultural sector in the Baltic States, has no doubt that now is the best time to invest in the development of wind power plants in Lithuania. The group plans to build three wind farms over the next three years to generate a total of about 700-1000 MW of energy, and comparable projects like Enel's 450 MW wind farm illustrate the scale achievable. With such capacity, more than half a million residential buildings can be supplied with electricity.

According to Alina Adomaitytė, Deputy General Director of Agrokoncernas Group, the company plans to invest 1-1.4 billion Euros in wind power plants in three different regions of Lithuania.

"Lithuania is changing its policy by simplifying the procedure for the construction and development of wind and solar parks. This means that their construction time will be significantly shorter, unlike markets facing renewables backlogs causing delays. At present, the technologies have improved so much that such projects pay off quickly in market conditions," explains Adomaitytė.

Agrokoncernas Group plans to build wind farms on its own lands. This has the advantage of allowing more flexibility in planning construction and meeting the requirements for such parks.

"Lithuania is a very promising country for wind parks. It is a land of plains, and the Baltic Sea provides constant and sufficient wind power, and lessons from UK offshore wind show the potential for coastal regions. So far, there are not many such parks in Lithuania, and need for them is very high in order to achieve the goals of national energy independence," says the owner of the group.

According to Adomaitytė, until now the Agrokoncernas Group companies have specialized in agriculture, but now is a particularly favorable time to enter new business areas.

"We are open to investors. One of the strategic goals of our group is to contribute to the green energy revolution in Lithuania, which is becoming a strategic goal of the entire European Union, as seen in rising solar adoption in Poland across the region."

In addition to wind farms, Agrokoncernas Group is planning the construction of the most modern deep grain processing plant in Europe. This project is managed by Agrokoncernas GDP, a subsidiary of the group. The deep grain processing plant in Lithuania is to be built by 2026. It will operate on the principle of circular production, meaning that the plant will be environmentally friendly and there will be no waste in the production process itself.

Related News

• Electricity Forum News

• Renewable Energy News

Ontario EV V2G Pilots enable bi-directional charging, backup power, and grid services with IESO, Toronto Hydro, and Hydro One, linking energy storage, solar, blockchain apps, and demand response incentives for smarter electrification.

Key Points

Ontario EV V2G pilots test bidirectional charging and backup power to support grid services with apps and incentives.

✅ Tests Nissan Leaf V2H backup with Hydro One and Peak Power.

✅ Integrates solar, storage, blockchain apps via Sky Energy and partners.

✅ Pilots demand response apps in Toronto and Waterloo utilities.

Electric vehicle owners in Ontario may one day be able to use the electricity in their EVs instead of loud diesel or gas generators to provide emergency power during blackouts. They could potentially also sell back energy to the grid when needed. Both are key areas of focus for new pilot projects announced this week by Ontario’s electricity grid operator and partners that include Toronto Hydro and Ontario Hydro.

Three projects announced this week will test the bi-directional power capabilities of current EVs and the grid, all partially funded by the Independent Electricity System Operator (IESO) of Ontario, with their announcement in Toronto also attended by Ontario Energy Minister Todd Smith.

The first project is with Hydro One Networks and Peak Power, which will use up to 10 privately owned Nissan Leafs to test what is needed technically to support owners using their cars for vehicle-to-building charging during power outages. It will also study what type of financial incentives will convince EV owners to provide backup power for other users, and therefore the grid.

A second pilot program with solar specialist Sky Energy and engineering firm Hero Energy will study EVs, energy storage, and solar panels to further examine how consumers with potentially more power to offer the grid could do it securely, in part using blockchain technology. York University and Volta Research are other partners in the program, which has already produced an app that can help drivers choose when and how much power to provide the grid — if any.

The third program is with local utilities in Toronto and Waterloo, Ont., and will test a secure digital app that helps EV drivers see the current demands on the grid through improved grid coordination mechanisms, and potentially price an incentive to EV drivers not to charge their vehicles for a few hours. Drivers could also be actively further paid to provide some of the charge currently in their vehicle back to the grid.

It all adds up to $2.7 million in program funding from IESO ($1.1 million) and the associated partners.

“An EV charged in Ontario produces roughly three per cent of emissions of a gas fuelled car,” said IESO’s Carla Nell, vice-president of corporate relations and innovation at the announcement near Peak Power chargers in downtown Toronto. “We know that Ontario consumers are buying EVs, and expected to increase tenfold — so we have to support electrification.”

If these types of programs sound familiar, it may be because utilities in Ontario have been testing such vehicle-to-grid technologies soon after affordable EVs became available in the fall of 2011. One such program was run by PowerStream, now the called Alectra, and headed by Neetika Sathe, who is now Alectra’s vice-president of its Green Energy and Technology (GRE&T) Centre in Guelph, Ont.

The difference between now and those tests in the mid-2010s is that the upcoming wave of EV sales can be clearly seen on the horizon, and California's grid stability work shows how EVs can play a larger role.

“We can see the tsunami now,” she said, noting that cost parity between EVs and gas vehicles is likely four or five years away — without government incentives, she stressed. “Now it’s not a question of if, it’s a question of when — and that when has received much more clarity on it.”

Sathe sees a benefit in studying all these types of bi-directional power-flowing scenarios, but notes that they are future scenarios for years in the future, especially since bi-directional charging equipment — and the vehicles with this capability — are pricey, and largely still not here. What she believes is much closer is the ability to automatically communicate what the grid needs with EV drivers, as Nova Scotia Power pilots integration, and how they could possibly help. For a price, of course.

“If I can set up a system that says ‘oh, the grid is stressed, can you not charge for the next two hours? And here’s what we’ll offer to you for that,’ that’s closer to low-hanging fruit,” she said, noting that Alectra is currently testing out such systems. “Think of it the same way as offering your car for Uber, or a room on Airbnb.”

Related News

• Electricity Forum News

• EV Infrastructure News

Germany Solar Boom is accelerating amid energy security pressures, with photovoltaic capacity surging as renewables displace gas. Policy incentives, grid upgrades, and storage, plus agrivoltaics and rooftop systems, position solar as cornerstone of decarbonization.

Key Points

Germany Solar Boom is rapid PV growth enhancing energy security, cutting emissions, and expanding domestic, low-carbon electricity.

✅ Targets 250 GW PV by 2032 to meet rising electricity demand.

✅ Rooftop, agrivoltaics, and BIPV reduce land use and grid stress.

✅ Diversifies supply chains beyond China; boosts storage and flexibility.

Europe is in crisis mode. Climate change, increasing demand for energy, the war in Ukraine and Russia's subsequent throttling of oil and gas deliveries have pushed the continent into a new era.

Germany has been trapped in a corner. The country relies heavily on cheap imported natural gas to run its industries. Some power plants also use gas to produce electricity. Finding enough substitutes quickly is nearly impossible.

Ideas to prevent a looming power crisis in Germany have ranged from reducing demand to keeping nuclear power plants online past their official closing date at the end of the year. Large wind turbines are doing their part, but many people don't want them in their backyard.

Green activists have long believed renewable energies are the answer to keeping the lights on. But building up these capabilities takes time. Now many experts once again see solar power as a shining light at the end of the tunnel, as global renewables set fresh records worldwide. Some say a solar boom is in the making.

Before the war in Ukraine put energy security at the forefront, the new German government had already pledged that renewable sources — wind and solar — would make up 80% of electricity production by 2030 instead of 42% today. By 2035, electricity generation should be carbon neutral.

It is an ambitious plan, but the country seems to be on its way. July was the third month in a row when solar power output soared to a record level, trade publication pv magazine reported, and clean energy's share reached about 50% in Germany according to recent assessments. For the month, photovoltaic (PV) systems generated 8.23 ​​terawatt hours of power, around a fifth of net electricity production. They were only behind lignite-fired power plants, which brought in nearly 22% of net production. 

Solar cells hanging on a modular solar house during the Solar Decathlon Europe in Wuppertal, Germany
Solar panels can come in many different shapes and sizes, and be used in many different ways

Last year, Germany added more than 5 gigawatts of solar power capacity, 10% more than in 2020. That took the total solar power capacity to 59 gigawatts, overtaking installed onshore wind power capacity in Germany, pv magazine said in January. Last year's solar production was about 9% of gross electricity consumption, according to Harry Wirth, who is head of photovoltaic modules and power plant research at the Fraunhofer Institute for Solar Energy Systems in Freiburg.

"For 2032, the government target is around 250 gigawatts of solar energy. According to their estimates, electricity consumption will increase to 715 terawatt hours by 2030," Wirth told DW. A different study by consultancy McKinsey says this is the lower limit. "So if we assume 730 terawatt hours for 2032, we would be at around 30% photovoltaic electricity in gross electricity consumption," he added. 

The energy expert also envisions great potential to install more solar panels without taking up valuable land. Besides adding them on top of parking garages or buildings, photovoltaic parts can be integrated into the exterior of buildings or even on the outside of e-vehicles. This would "not only produce electricity on surfaces already in use, but it would also create synergies in its own application," said Wirth.

Foreign investment in German solar
It is not just researchers that are taking note. Big businesses are stepping in too. In July, Portuguese clean energy firm EDP Renovaveis (EDPR) announced it had agreed to take a 70% interest in Germany's Kronos Solar Projects, a solar developer, for €250 million ($254 million).

The Munich-based company has a portfolio of 9.4 gigawatts of solar projects in different stages of development in Germany, France, the Netherlands and the UK, according to the press release announcing the purchase. Germany represents close to 50% of the acquired solar portfolio.

EDPR, which claims to be the fourth-largest renewable energy producer worldwide, said it generated 17.8 terawatt hours of clean energy in the first half of 2022.

Miguel Stilwell d'Andrade, chief executive of EDPR and its parent EDP, said they have great expectations from Germany in particular as "it is a key market in Europe with reinforced renewable growth targets." 

Fabian Karthaus is one of the first farmers in Germany to grow raspberries and blueberries under photovoltaic panels. His solar field near the city of Paderborn in northwestern Germany is 0.4 hectares (about 1 acre), but he would like to expand it to 10. He could then generate enough electricity for around 4,000 households — and provide more berries for supermarkets.

Germany was once a leader in solar power. For many years the country enjoyed a large share of the world's total solar capacities. A lot of that early success had to do with innovative government support. That support, however, proved too successful for some as a fall in wholesale electricity prices in Northern Europe hurt the profits of power companies, leading to calls for a change in the rules.

Updated regulations, and changes to the Renewable Energy Sources Act that reduced feed-in tariffs slowed things down. Feed-in tariffs usually grant long-term grid access and above-market price guarantees in an effort to support fledgling industries.

With less direct financial incentives, the industry was neglected leaving it open for competitors. The pace of solar infrastructure growth has also been hampered by issues of red tape, supply chain backlogs, a lack of skilled technicians and, despite solar-plus-storage now undercutting conventional power in Germany, a shortage of storage for electricity produced when it is not needed.

Now the war in Ukraine and Europe's dependency on Russia is refocusing efforts and "will strengthen the determination for an ambitious PV expansion," said Wirth. But the biggest challenge to the region's solar industry remains China.

Public buildings can play a big role, not just because of their size, but because the government is in charge of them

An overreliance on China
China took an early interest in photovoltaic technology and soon galloped past countries like the US, Japan and Germany thanks to huge state subsidies that manufacturers enjoyed. Today, it has become the place to go for all things solar, even as Europe turns to US solar equipment suppliers to diversify procurement.

A new report from the International Energy Agency puts it into numbers. "China has invested over $50 billion in new PV supply capacity — 10 times more than Europe — and created more than 300,000 manufacturing jobs across the solar PV value chain since 2011."

Today China has over 80% of all solar panel manufacturing capacity and is home to the top-10 suppliers of photovoltaic manufacturing equipment. Such a high concentration has led to some incredible realities, like the fact that "one out of every seven panels produced worldwide is manufactured by a single facility," according to the report.

These economies of scale have brought down costs, and the country can make solar components 35% cheaper than in Europe. This gives China outsized power and makes the industry susceptible to supply chain bottlenecks. To diversify the industry and get back some of this market, Europe needs to invest in innovation and make solar growth a top priority.

Germany has several high-tech photovoltaic manufacturers and research institutes. But it only has one manufacturer of solar cells specializing in high-performance heterojunction technology, says Wirth. Yet even though the European photovoltaic industry is fragmented and not what it once was, he is still counting on big demand for solar technology in the foreseeable future, with markets like Poland accelerating adoption across the region. 

Related News

• Electricity Forum News

• Renewable Energy News

Eastern Green Link 1 is a 190km HVDC subsea electricity superhighway linking Scotland to northern England, delivering renewable energy, boosting grid capacity, and enhancing energy security for National Grid and Scottish Power.

Key Points

A 190km HVDC subsea link sending Scottish renewables to northern England, boosting grid capacity and UK energy security.

✅ 190km HVDC subsea route from East Lothian to County Durham

✅ Cables by Prysmian; converter stations by GE Vernova, Mytilineos

✅ Powers the equivalent of 2 million UK households

One of Britain’s biggest power grid projects has awarded contracts worth £1.8bn for a 190km subsea electricity superhighway, akin to a hydropower line to New York in scale, to bring renewable power from Scotland to the north of England.

National Grid and Scottish Power, following a recent 2GW substation commissioning, plan to begin building the “transformative” £2.5bn high-voltage power line along the east coast of the country from East Lothian to County Durham from 2025.

The Eastern Green Link 1 (EGL1) project is one of Britain’s largest grid upgrade projects in generations and has been designed to carry enough clean electricity to power the equivalent of 2 million households.

The UK is under pressure to deliver a power grid overhaul, including moves to fast-track grid connections nationwide, as it prepares to double its demand for electricity by 2040 as part of a plan to cut the use of gas and other fossil fuels.

The International Energy Agency has forecast that 600,000km of electric lines will need to be either added or upgraded across the UK by the end of the next decade to meet its climate targets, amid a global race to secure supplies of high voltage cabling and other electrical infrastructure components and to explore superconducting cables to cut losses.

The EGL1 project has awarded Prysmian Group, an international cable maker, the contract to deliver nearly 400km of power cable. The contract to supply two HVDC technology converter stations, one at each end of the cable, has been awarded to GE Vernova and Mytilineos.

The upgrades are expected to cost tens of billions of pounds, according to National Grid, which faces plans for an independent system operator overseeing Great Britain’s electricity market. The FTSE 100 energy company has warned that five times as many pylons and underground lines need to be constructed by the end of the decade than in the past 30 years, and four times more undersea cables laid than there are at present.

Britain’s power grid upgrades are also expected to emerge as an important battleground in the general election. The next government will need to balance the strong local opposition to new grid infrastructure across rural areas of the UK against the climate and economic benefits of the work.

Research undertaken by National Grid has found there will be an estimated 400,000 jobs created by 2050 due to the work needed to rewire Britain’s grid, a trend mirrored by recent cross-border transmission approvals in North America, including about 150,000 jobs anticipated in Scotland and the north of England.

Peter Roper, the project director for EGL1, said the super-cable would be “a transformative project for the UK, enhancing security of supply and helping to connect and transport green power for all customers”.

He added: “These contract announcements are big wins for the supply chain and another important milestone as we build the new network infrastructure to help the UK meet its net zero and energy security ambitions.

Related News

• Electricity Forum News

• Grid Technologies News