3S Swiss Solar Systems updates MegaSlate Solar roof system


The MegaSlate Solar roof system from 3S Swiss Solar Systems is a pioneering, architecturally aesthetic BIPV concept designed for new builds and roof retrofits. The latest version of this technology enables an integrated, energy-producing roofing system which combines PV with solar heat – meaning home owners can produce electricity with the panels and warm up used water to support their heating systems. This product is certified by the TÜV, tested for wind and snow load, as well as for resistance to hail, offering optimal weather protection.

The solar laminate of the MegaSlate system has a standard size and is suitable for roof surfaces with an angle of inclination of at least 20º. The use of individual tailor-made elements is also possible, allowing for the adaptation to roof areas, skylights and dormers. The solar laminates are overlapping with glass fiber reinforced plastic sections in-between, which serve both as supporting rails for the solar laminates and as gutters. The laminates are suspended from holding hooks on the prepared roof construction, and are wired with plugs and sockets. The solar laminates can be walked on, and can therefore be removed individually without any issues. 3S provides a warranty for the PV modules with a performance guarantee of 90% of minimum output for 10 years and 80% of minimum output for 20 years.

The MegaSlate H&S heating panel was developed in collaboration with H&S Solar in Rebstein (SG). The PV and heating modules from Lyss are frameless, enable large-surface and integrate for aesthetic appeal.


The main issues with BIPV tiles are weight and price. The MegaSlate Solar roof system has was first designed at 22kg, which although not overly heavy, needed to come down in order to boost appeal. Production costs of the tiles were also far higher than conventional PV modules, so this was another area needing to be addressed in order to increase the appeal for BIPV products in relation to conventional PV systems as well as reaching grid-parity.


The MegaSlate system has now come down from 22kg to 17kg per tile, this drop in weight will now drive implementation further. 3S has also been able to pass on a cost reduction of 18% to its customers through reduced production costs overall. The company will now work to get this down further, as the lower the price, the more quickly electricity from a solar installation can be offered at the same cost as the general end-user energy price.


The new generation of MegaSlate is being marketed worldwide through the distribution partners of 3S Swiss Solar Systems. Available now.

23 August 2022
Intersolar South America, South America’s largest exhibition and conference for the solar industry, takes place at the Expo Center Norte in São Paulo, Brazil, on August 23–25, 2022, and has a focus on the areas of photovoltaics, PV production and solar thermal technologies. At the accompanying Intersolar South America Conference, renowned experts shed light on hot topics in the solar industry. In 2021 – despite the Covid-19 pandemic – Intersolar South America welcomed more than 28,000 visitors and over 1,000 conference attendees over 3 days. 200+ providers showcased their products. Combining local and international expertise, Intersolar South America brings together the PV and solar thermal sector to discuss the current status and strategic trends for Latin American PV markets, as well as technology innovations and new business opportunities. Overall, distributed generation is still driving momentum in the Brazilian market. Get 10% off with code 38LCF6KN
6 September 2022
Intersolar Mexico sits at the cross-section of photovoltaics, solar heating & cooling technologies, and energy storage. The event serves as the industry’s go-to source for invaluable technology trends and premier B2B contacts in the promising Mexican solar market. From September 6–8, 2022 Intersolar Mexico together with the co-located The GREEN Expo® and Aquatech Mexico will take place in Centro Citibanamex, Mexico City.
7 September 2022
The demand for rooftop solar PV is soaring, driven by falling costs of the technology against energy crises that are gripping countries globally. But while an increasing number of households turn to solar to generate their own electricity, there is now a need for more specialist equipment, technologies and services to ensure the solar transition can reach as many customers as possible. Delivering these is now a major challenge for rooftop solar installers. This webinar will analyse the characteristics of the rooftop solar market, discussing how the products, logistics, installation and servicing of solar systems has evolved in line with consumer demands.
14 September 2022
Join us in London for 2 days as we look at the UK’s new landscape for utility & rooftop solar. Understand the new opportunities within this GW-plus annual market!
15 September 2022
Bifacial PV modules will be the dominant solar PV technology globally within one or two years; in the utility-scale sector, their market share is already above 70%. This webinar will provide a clear view on the successful implementation of bifacial technology, maximizing system performance and minimising LCoE.
19 September 2022
RE+ 2022 is the umbrella event that includes SPI, ESI, RE+ Power, and RE+ Infrastructure. As North America's largest renewable energy event, it's a catalyst for industry innovation that's supercharging business growth in the clean energy economy.

Read Next

August 10, 2022
Canadian Solar plans to build an integrated PV manufacturing plant in Western China, with a capacity of 200,000MT of high-purity polysilicon, 10GW of both cells and modules and multi-GW productions of raw and auxiliary materials.
August 10, 2022
Iberdrola has commissioned the 590MW 'Francisco Pizarro' PV project in Extremadura Southwestern Spain, which is Europe’s largest solar plant.
PV Tech Premium
August 10, 2022
PV Tech Premium looks at the main drivers that drove solar PV in Chile in the last years and has risen as one of the leaders in the region.
August 10, 2022
OMERS Private Equity has acquired a minority stake in the Arizona-headquartered solar operations & maintenance (O&M) provider NovaSource Power Services.
August 10, 2022
A solar PV module frame made of recycled roll-formed steel has outperformed conventional aluminium frames in testing by an independent third party.
August 10, 2022
US solar tracker manufacturer FTC Solar has cut its net losses compared with last quarter and Q2 2021 but has seen its revenue collapse, blaming a hostile solar environment in the US that has seen project delays and cancellations, which it said it now hoped was coming to an end.

Subscribe to Newsletter

Upcoming Events

Upcoming Webinars
September 7, 2022
15:30 AEST (UTC +10)
Solar Media Events
September 14, 2022
Solar Media Events
October 4, 2022
New York, USA
Solar Media Events
October 11, 2022
Virtual event