News & Exhibition

    SUNDTA has successfully completed and commissioned a distributed rooftop photovoltaic project in Anhui Province, China. With a total capacity of 551.25 kW, the project combines rooftop solar generation with battery energy storage and uses SUNDTA 700 W N-type solar panels, SUNDTA 51.2 V 200 Ah rack-mounted lithium batteries, and Solis 50 kW energy storage inverters. The project has entered operation after successful commissioning, demonstrating SUNDTA’s integrated capability in solar and storage project delivery.   The project utilizes 788 N-type 700W solar panels, 11 Solis 50kW energy storage inverters, and two sets of rack-mounted lithium batteries (totaling 54 units); this configuration supports peak shaving and valley filling, load shifting, and an increased self-consumption rate for the rooftop solar energy.   The equipment selection reflects a focus on efficiency, safety, and long-term reliability. SUNDTA 700 W N-type panels offer high conversion efficiency and strong power generation performance, helping maximize limited rooftop space. The wall-mounted lithium batteries are compact, easy to install, and suitable for distributed applications, while the Solis 50 kW energy storage inverters provide stable conversion and intelligent energy management. Together, these products form a flexible solar-plus-storage system that can respond to changing load demand and improve energy resilience.   The Anhui project also highlights SUNDTA’s service strength. SUNDTA not only has a professional sales team capable of addressing the needs of overseas markets, but also maintains an experienced engineering and O&M team with rich experience in building photovoltaic projects. From initial site assessment and system design to equipment selection, construction guidance, commissioning, and operation, SUNDTA’s engineering team supports the full project lifecycle. This practical experience helps reduce risks, shorten delivery time, and ensure stable system operation after grid connection.   For overseas customers, SUNDTA can provide remote technical support. Through remote monitoring, online diagnosis, parameter configuration guidance, troubleshooting suggestions, and technical training, SUNDTA’s team can assist international partners even when travel is not immediately possible. This remote support capability is especially important for distributed rooftop projects, where installation conditions, grid rules, and customer requirements can vary from one market to another. It allows SUNDTA to respond quickly and help partners solve technical issues efficiently.   SUNDTA welcomes global customers to visit China to see its factory and project sites in person. Visiting the factory allows customers to understand production processes, quality control, and product testing, while visiting operating projects such as the Anhui rooftop installation provides direct insight into real performance and installation q...

The average price of a renewable energy power purchase agreement (PPA) signed in Europe in August reached €46.02/MWh (US$53.1/MWh), up from €45.01/MWh in July, which is equivalent to a 2.2% month-on-month increase.   This is according to the latest figures from Pexapark, which were published last week and attribute some of this change to the manner in which it tracks PPA value, rather than an uptick in prices alone. For instance, the firm completed a “recalibration” of PPA fair values in Great Britain, which found that “offtakers had moderated the risk discounts embedded in their pricing,” yielding higher values for PPAs after the recalibration.   This is particularly impactful for longer-term PPAs—Pexapark notes that ten-year PPAs saw an average price increase of £5/MWh (US$6.74/MWh)—and is reflected in the 4.9% month-on-month price increase in all Great Britain PPAs, the highest growth figure reported by Pexapark.   However, the majority of countries tracked by Pexapark also reported month-on-month increases in average PPA prices, with Germany (2.8%), the Netherlands (2.8%) and Italy (1.6%) all reporting an increase in PPA prices.   Pexapark’s latest figures also show no or marginal changes in PPA prices in three European countries: Spain (no change), France (0.2% increase) and Poland (0.3%). Earlier this month, PV Tech Premium heard from the Institute for Energy Economics and Financial Analysis (IEEFA) Europe’s Jonathan Bruegel about how renewable energy PPAs are popular in Europe as they represent “known costs”, compared to fossil fuel prices, which have fluctuated more dramatically since the start of the current conflict in the Middle East.   Europe signs 14 PPAs in August, down from 24 in July Pexapark also reported that the number of deals signed in August fell considerably from the previous month—with 14 agreements completed for 335MW of capacity, compared to 24 deals for 1.1GW of capacity in July—and this disparity between the lower availability of PPAs and high demand for power could have contributed to the increase in prices in many countries.   The analyst noted that corporate offtakers continue to dominate the renewable energy PPA space. In July, corporate offtakers accounted for 21 of the 24 deals signed, while in August they accounted for 13 of the 14 agreements. July also saw a “more evenly distributed” mix of renewable energy technologies, while in August, onshore wind power accounted for 64% of the energy generation capacity for which deals have been signed.   Meanwhile, Portugal and the Nordics saw a 1.6% and 1.2% month-on-month decline, respectively, in PPA prices. Earlier this year, WElink Energy Portugal 2, the owner of Portugal’s largest solar PV project, entered administration.   FAQ A: What is a solar energy storage system? Q: A solar energy storage system stores excess electric...

  HEFEI, China – September 2026 – SUNDTA, a leading provider of residential and commercial energy storage systems, has launched its annual client visit tour across Europe this month, with stops in Poland and Italy to showcase the company's latest photovoltaic (PV) energy storage technologies and reinforce its commitment to personalized, on-site service. As part of its longstanding tradition of meeting clients face-to-face, SUNDTA's delegation travels to key markets each year to conduct on-site assessments, understand specific operational needs, and deliver customized one-on-one PV energy storage solutions. By factoring in local terrain conditions, sunlight duration, and site-specific constraints, the company ensures that every system is precisely engineered for maximum performance and reliability.   Poland Warehouse Project: A Tailored Solution in Action The first leg of the tour took the SUNDTA team to Poland, where they visited a client's large-scale warehouse facility. The client, seeking to install a rooftop PV system, required a comprehensive energy storage solution that could accommodate the building's structural characteristics, local climate patterns, and solar exposure levels. SUNDTA's engineering team conducted a thorough on-site evaluation, analyzing roof load-bearing capacity, orientation, shading factors, and seasonal sunlight variations. Based on these findings, the team rapidly generated remote design schematics—delivering the client a clear, immediate visual overview of the entire project scope, from panel layout to battery placement and inverter integration. "Every site presents unique challenges," said paris from SUNDTA. "Our Poland warehouse client needed a system that could handle peak loads while providing reliable backup power. By conducting on-the-ground assessments and leveraging our remote design capabilities, we were able to present a complete solution within hours—not weeks."   Professional Engineering and Remote Support Team What truly sets SUNDTA apart is its integrated approach to client service. With over 50 certified photovoltaic engineers and project managers on staff, the company maintains a professional team capable of providing round-the-clock support from initial design through final commissioning. The company's remote engineering capabilities enable rapid response to client needs across time zones. Following the Poland site visit, SUNDTA's design team worked collaboratively with the client to refine system specifications, ensuring seamless integration with existing infrastructure. This hybrid model—combining in-person consultations with remote technical support—has become a hallmark of SUNDTA's client-centric philosophy.   12 Years of Photovoltaic Expertise With 12 years of hands-on experience in photovoltaic engineering and system design, SUNDTA brings deep technical expertise to every project. The company operates its own dedicated factory with indepen...

Germany’s federal network agency (Bundesnetzagentur) has launched its third rooftop solar PV tender of the year, which aims to award 296.3MW of new rooftop solar capacity.   The maximum bidding price has been set at €0.10/kWh (US$0.12/kWh) and bidders will have to pay for bids made. Both components remain unchanged from the two earlier rooftop solar tenders launched this year, one in February and one in June, which sought to tender 282.7MW and 296.3MW of new capacity, respectively.   However, both of these tenders were undersubscribed. The first tender saw just 155MW of new capacity awarded, from a total bid capacity of 177MW, while the second tender awarded 208.5MW. Between these two tenders, the average volume-weighted winning bid increased from €0.0956/kWh to €0.0972/kWh, while the number of successful bids increased from 85 to 108.   While Germany’s rooftop solar tenders have been undersubscribed this year, its utility-scale tenders have been oversubscribed; in August, the Bundesnetzagentur received more than 3GW of bids in its latest utility-scale tender, and awarded contracts to 261 bids for the full 2.1GW of capacity.   The government plans to launch a third utility-scale solar tender in December, bringing the total utility-scale solar capacity tendered above 6GW, which would make up for some of the shortfall in the rooftop solar space. Across the two rooftop solar tenders completed so far this year, the government has awarded 363.5MW out of a maximum available capacity of 579MW.   This disparity in interest in solar tenders comes as Germany posts new solar output records. Figures from the Fraunhofer Institute for Solar Energy Systems (ISE) show that in the first half of the year, German solar PV generation increased by 10% year-on-year and exceeded 40TWh for the first time on record.   The same figures show that ground-mount solar contributed to the majority of this growth, with 3.5GW of new ground-mount capacity additions between the first half of 2025 and the first half of 2026, compared to 2.1GW of new rooftop capacity between these periods.   European Commission to rule on Solarpaket in relation to state aid limits It is worth noting, however, that the Bundesnetzagentur is keen to expand its rooftop solar tenders further under the Solarpaket reforms introduced in 2024. Under these reforms, the government aims to increase the total rooftop solar capacity awarded annually through tenders to 2.6GW, up from the current target of 1.1GW.   However, the government is waiting on a decision from the European Commission that the Solarpaket reforms do not violate its “state aid” rules, which are put in place to prevent companies from gaining an unfair “advantage” by receiving government support for a project.   The Bundesnetzagentur noted that the commission is currently considering its latest tender with regard to state aid rules, and if a decision i...

Just recently, aviation history witnessed another bombshell.   On August 12th, at Plattsburgh International Airport in New York State, the X1, the world's largest all-battery electric demonstrator, completed its maiden manned test flight. The entire test flight lasted 27 minutes, with the all-electric propulsion system outputting over 1 megawatt, achieving zero consumption of aviation kerosene throughout the flight.   This was a technology verification test flight and does not yet possess commercial passenger operation qualifications. The goal of this flight is to accumulate a complete set of flight data for the subsequent 30-seat hybrid regional jet, the ES-30.   According to Heart Aerospace's official announcement and related reports, the X1 demonstrator aircraft tested this time has a fuselage length of 23.2 meters, a wingspan of 32.3 meters, a maximum takeoff weight exceeding 11,340 kg, and is equipped with four 400 kW-class electric motors, with a total installed power of 1,600 kW. During the test flight, the actual continuous output power exceeded 1 megawatt, the maximum test flight altitude was 335 meters, and the maximum design airspeed was 259 km/h. The maiden flight included the complete process of ground taxiing, takeoff, climb, in-flight maneuvers, and approach and landing, all completed by a single test pilot.   Regarding the most pressing question of cost, Heart Aerospace stated in its maiden flight press release that the X1 demonstrator's electricity consumption for 27 minutes of flight was approximately $5. While this figure does not include other costs such as pilot costs, maintenance costs, airport costs, financing, and insurance, it represents a significant reduction compared to aviation fuel costs.   Electric aircraft, are they really here?   The low-altitude economy has been booming in the past two years. Compared to large commercial airliners, future electric aircraft certainly cannot rely on fuel-powered large passenger planes. It is foreseeable that the main applications of electric aircraft will focus on short-haul passenger and cargo transport.   The successful maiden flight of Heart Aerospace's X1 prototype has made the future commercial application of electric aircraft clearer. my country has also been continuously exploring and innovating in the low-altitude economy field in the past two years.   Recently, XPeng Motors announced that, to date, its flying car has received over 7,000 orders and will achieve mass production of its first flying car this year.   Currently, XPeng has formed two major flying car product systems. The A868 is designed with a fully tilt-rotor configuration. Based on XPeng Motors' Kunpeng super-range extended-range architecture, it uses a self-developed aerospace-grade hybrid electric power core to provide a continuous and sufficient energy supply. It is expected to achieve a range of 500km and a top speed of 360km/h.   The A868 combines the conv...

Tesla's solar superfactory is emerging.   Recently, Tesla submitted tax credit application documents to the Texas state government, bringing its solar manufacturing project, codenamed "Crystal Solar," into the public eye.   The documents show that Tesla plans to build a vertically integrated solar power plant in Fort Bend County, Texas. The production lines will include silicon ingot pulling, wafer cutting, battery coating, metallization printing, battery testing and quality control, cleanrooms, automated logistics, and a full range of chemical support facilities.   The project will reportedly cover approximately 3,050 acres, with a total investment of $10.1 billion (approximately RMB 68.1 billion), including $8.6 billion in production equipment and related movable assets, and $1.5 billion in fixed assets. The construction period is from 2026 to 2028, with a target of commercial production in the first quarter of 2029.   At the Davos Forum in January of this year, Musk revealed plans for Tesla and SpaceX to each build 100GW annual capacity solar factories in the US over the next three years, totaling 200GW.   Now it seems Musk is getting closer to this goal.   Investing $10.1 billion to cover the entire photovoltaic industry chain   In the past two years, a very obvious feeling is that the US photovoltaic industry is accelerating its decoupling from China.   From the IRA's tax credit for domestic manufacturing, to the FEOC's restricted entity rule, and then to Section 232 trade provisions introducing minimum import prices and additional tariffs, a series of barriers have been implemented, with a very clear goal: to incentivize domestic factory construction and reduce reliance on imports from overseas photovoltaic industry chains.   However, reality often differs from policy planning. Aggressive decoupling actions have instead had a strong backlash and impact on the development of the US photovoltaic industry itself.   Currently, the vast majority of new photovoltaic capacity in the US is concentrated in the end-module packaging stage. Expansion in silicon materials, wafers, and cells is severely lagging. Truly vertically integrated domestic capacity remains scarce.   The reason for this predicament is that China holds an absolute dominant position in the core manufacturing stages of the global photovoltaic industry. Currently, my country's global market share in the four core stages—polysilicon, wafers, cells, and modules—exceeds 80%, with a near monopoly in the polysilicon sector.   my country possesses a complete photovoltaic (PV) industry cluster, mature technology, and a significant cost advantage—a competitive barrier that the United States cannot replicate in the short term.   This also means that the US's current push to decouple its PV supply chain essentially deviates from the optimal global industrial configuration. Not only will it fail to achieve rapid ...

A year after first breaking ground on one of Iran's landmark utility-scale solar initiatives, SUNDTA has returned to the country with its engineering and maintenance team to conduct final commissioning of Growatt inverters and resolve operational issues across the entire 10MW large-scale ground-mounted photovoltaic project. The visit marks a significant milestone in the ongoing partnership between SUNDTA and its Iranian client, demonstrating the company's long-term commitment to project success beyond initial delivery.   The 10MW grid-connected solar project, a collaborative effort between SUNDTA and its Iranian partners, achieved its first major breakthrough when the initial 2.5MW unit was successfully synchronized with the grid. The system utilizes SUNDTA 590W N-type solar panels featuring TOPCon technology with approximately 22.8% higher efficiency, combined with GROWATT 250KW grid-connected inverters known for their transformer-less design and IP66 protection rating. The project exemplifies SUNDTA's end-to-end capabilities, covering everything from initial consultation and system design to procurement, global logistics coordination, and on-site construction support.   SUNDTA is dedicated to providing complete photovoltaic and energy storage solutions for every client, offering integrated systems that span the entire solar-storage application spectrum. From residential energy systems designed for energy independence to commercial and industrial solutions that reduce operational costs and carbon footprints, SUNDTA's approach remains consistent: precision engineering tailored to precise requirements. The company's proprietary design methodology allows customers to scale system sizes according to their energy needs, ensuring flexibility and future adaptability.   What truly sets SUNDTA apart is its professional team, which addresses pre-sales and after-sales technical issues with unmatched expertise. The company maintains a dedicated in-house team of over 50 certified photovoltaic engineers and project managers who oversee every critical phase of project execution, delivering optimized integrated systems tailored to each client's site conditions, energy profiles, and financial objectives. SUNDTA operates its own dedicated factory with independent production lines for lithium batteries and solar panels, ensuring rigorous quality control at every stage of manufacturing. This vertical integration, combined with strategic partnerships with industry leaders such as JINKO and Growatt, guarantees a stable and sufficient supply of high-end components for projects of all scales.   SUNDTA's commitment to client relationships extends far beyond the initial sale. The company maintains overseas presence while also conducting regular international visits to meet clients face-to-face, ensuring that systems continue to operate at peak performance. The recent return to Iran follows a series of high-level engagements, including a productiv...

SUNDTA, a leading renewable energy solutions provider, has announced the successful completion of production, factory testing, and packaging of a comprehensive 300kW photovoltaic energy storage system destined for a customer in Nigeria. The system has passed all rigorous factory inspections and is now ready for shipment, marking another significant milestone in SUNDTA’s expanding presence in the African renewable energy market. The complete system comprises 325 SUNDTA 650W N-type solar panels, two Solis 250kW energy storage inverters, and a 770kWh high-voltage rack-mounted lithium battery pack. The photovoltaic mounting system for the entire installation was also manufactured in-house by SUNDTA, showcasing the company’s end-to-end manufacturing capabilities. This integrated approach eliminates the complexity of coordinating multiple vendors, allowing customers to benefit from a single point of procurement and support.   One-Stop Solar-Storage Solutions Powered by In-House Manufacturing What truly sets SUNDTA apart is its ability to provide complete, one-stop photovoltaic and energy storage system solutions. The company maintains its own dedicated production lines for both lithium batteries and photovoltaic modules, giving it full control over quality, supply chain, and delivery timelines. This vertical integration enables SUNDTA to offer perfectly tailored solutions that seamlessly integrate solar panels, high-voltage batteries, inverters, and energy management software. SUNDTA has established deep strategic partnerships with tier-one inverter manufacturers including Solis and Deye. Through these formal alliances, SUNDTA has secured prioritized access to a full spectrum of inverter models—from residential single-phase units to commercial three-phase systems. This ensures stable and comprehensive supply regardless of order size, addressing one of the most persistent challenges in the industry where smaller customers frequently face allocation cuts or delayed shipments. SUNDTA’s contractual stock guarantees and real-time inventory visibility across partner brands enable delivery of any required inverter specification on short notice.   Superior High-Voltage Rack-Mounted Lithium Batteries SUNDTA’s high-voltage rack-mounted lithium batteries incorporate the most advanced features of modern energy storage technology. Compared to conventional low-voltage systems, they deliver higher energy density, lower internal resistance, and improved charge-discharge efficiency. This translates into faster response times, reduced energy loss, and the ability to handle larger peak loads—making them ideal for both commercial and industrial applications. Built with automotive-grade lithium iron phosphate (LiFePO4) cells, these batteries offer exceptional safety, ultra-long cycle life exceeding 6,000 cycles, and intelligent Battery Management Systems (BMS) that monitor voltage, current, and temperature in real time. The mod...