Green Roofs vs. Solar Panels

Transcription

1 TRIPLE GREEN ROOF Three Sets of Advantages in One Solution!

2 Green Roofs vs. Solar Panels Often green roofs and roof-mounted solar panels are seen as mutually exclusive options (either solar panels or a green roof) OR SOMETIMES

3 Our Approach: Triple Green Roof We offer a solution that combines 3 eco-friendly alternatives that work in synergy: 2. SOLAR PANELS 1. BIODIVERSE GREEN ROOF 3. WOODEN STRUCTURE

4 Advantages of the Triple Green Roof: Solar panels work best at ambient air temperature of 24 C. A PV panel loses 0,5 additional degree above 25 C. The temperature of a conventional roof surface is up to 80 C in summer, which yield of the PV installation. The green roof maintains air temperature between 20 and 28 C thanks to evapotranspiration form the plants, which makes the conditions perfect for solar energy production. In winter, green roof ensures milder ambient air temperature. Sources:

5 Advantages of the Triple Green Roof: No Penetration of the Roof for Mounting Solar Panels The substrate, drainage and other layers required for the green roof act as a weight to hold in place solar panel modules, which makes it unnecessary to pierce the roof risking to damage the membrane or add extra weight on the roof Weight kg/m

6 Advantages of the Triple Green Roof: Promoting Biodiversity The addition of an array of PV panels causes shading underneath the panels. It provides a unique habitat for plants and species that require shading. Research in Switzerland has shown the increased number of species of invertebrates that are able to inhabit a green roof with shaded areas. Furthermore, water run off from the surface of the panels concentrates moisture allowing for a greater diversity of Source:

7 Advantages of the Triple Green Roof: Sustainability Replacing metal with wood in a supportive structure for the solar panels makes our solution particularly sustainable. Wood has the unique ability to capture and store CO 2 while reducing carbon sources. There are 2 ways to reduce CO 2 in the atmosphere: reduce emissions or carbon sources remove CO 2 and store it - increasing carbon sinks Wood has the unique ability to do both. Each cubic meter of wood saves a total of 2 tons of CO 2. Every cubic meter of wood used as a substitute for other building materials reduces CO 2 emissions by an average of 1,1 ton CO 2. If this is added to the 0,9 ton of CO 2 stored in wood, we get a total of 2 tons CO 2 Source: Tackle climate change, USE WOOD

8 Advantages of the Triple Green Roof: Sustainability Even recycled steel production is associated with sizeable amounts of CO 2 emissions, while timber required for InnoVentum s PV support structure reduces CO 2 impact Source: Tackle climate change, USE WOOD

9 Advantages of the Triple Green Roof: required for cooling or heating of the building. Shading the outer surface of the building envelope has been shown to be more effective than internal insulation. In summer, the green roof protects the building from direct solar heat. In winter, the green roof minimizes heat loss through added insulation on the roof. Energy conservation translates into cost savings and fewer greenhouse gas emissions. Source:

10 Advantages of the Triple Green Roof: Water Retention During heavy or continuous rain, runoff can overwhelm stormwater infrastructure and Green roof growing media retain rainwater and, together with plants, return a portion of this water to the atmosphere through evapotranspiration. Stormwater that does leave the roof is delayed and reduced in volume. Stormwater that runs off a green roof is cleaner than runoff from a conventional roof. Retention and delay of runoff eases stress on stormwater infrastructure and sewers. Cost savings from decentralized stormwater mitigation reduces the need to expand or renovate related infrastructure. Table showing average water retention for a tranditional roof vs. a green roof. Source: "Green Roofs in the New York Metropolitan Region, Research Report," Rosenzweig, et. al. Source:

11 Advantages of the Triple Green Roof: Longevity of the Roof twice as long as those on traditional roofs. Reduced material waste from re- Less frequent re- over time Temperature Fluctuation ( C) Median Daily Membrane Temperature Fluctuations (Jan 1, 2005 Dec 31, 2005) Winter Spring Summer Fall Reference Roof Green Roof 1 Green Roof 2 16 Green Roof Research Facility (by season) September 2006, CMHC Report. Source:

12 Advantages of the Triple Green Roof: Air Quality Improvement & Reducing Heat Island Effect Plant leaves trap dust particles from the air (which among other positive effects, helps keep solar panels clean) and evapotranspiration cools ambient temperatures. Less ground level ozone + less heat = less smog. Comparison of temperatures of traditional vs. green roofs in Chicago. Source: the EPA

13 Advantages of the Triple Green Roof: Noise Reduction Based on the numerical simulations and empirical research it was concluded that both extensive and intensive green roofs have the potential to reduce sound pressure levels at shielded places. Replacing a traditional roof by an optimized green roof improves shielding from dba. For the average listener, such a reduction in sound pressure level corresponds to halving of the loudness. Source:

14 SOLAR POWER SET SPECIFICATIONS

15 Solar Power Set: Highlights InnoVentum s Solar Power Set is a 2 kwp module for generation of electricity with solar panels, suitable for residential as well as industrial use. PV panels The Solar Power Set comprises " 8 photovoltaic (PV) panels, " 8 micro-inverters, " mounting system, " wooden support structure, " foundation for roof mounting. Mounting system Micro inverters Wooden support structure Foundation

16 Advantages Advantages of the Solar Power Set system: High quality materials and components ensure reliable performance and long product life; integrated intelligence, increased energy harvest, and system performance control not found in central inverter based systems; Simple and extremely fast assembly with SpeedClip, SpeedLock and non-invasive foundation for roof mounting; Use of wood for a support system makes a solar installation environmentally friendly like never before; Full system warranty period of 10 years.

17 Energy production: solar systems Depending on your energy needs, you can vary the number of 8-panel Solar Power Sets. Energy production throughout a year for different number of solar panels: Solar Power Sets:10 kwp 4 Solar Power Sets: 8 kwp 3 Solar Power Sets: 6 kwp 2 Solar Power Sets: 4 kwp 1 Solar Power Set: 2 kwp 8 solar panels 16 solar panels 24 solar panels 32 solar panels 40 solar panels All calculations made at Malmö latitude 0 Jan Feb Mar Apr May Jun Jul Aug Sep Oct Nov Dec 1 Solar Power Set 2 Solar Power Sets 3 Solar Power Sets 4 Solar Power Sets 5 Solar Power Sets Annual Energy Yield, kwh

18 30% of costs can be returned! Apart from providing green energy, Solar Power Swedish Energy Agency where up to 30% of total cost can be returned. You can read more here:

19 InnoVentum s technical parameters (for each panel): Nominal power (+5/-0 W) Short circuit current Open circuit voltage Current at maximum power Voltage at maximum power 250 Wp 8,94 A 37,78 V 8,45 A 29,89 V 15,0 Format Weight Front cover Back cover Frame Cell Junction box Cable 1670 mm x 1000 mm x 35 mm (incl. frame) 19 kg 3,2mm thermally pre-stressed solar glass Anodized aluminum 6 x 10 multicrystalline solar cells Connector SOLARLOK, IP mm *5 x 115 mm *17 x 23 mm *4 Protection class IP 67, with bypass diodes 4 mm 2 Solar cable; (+) 1210 mm, (-) 1210 mm x 8 Place of manufacture IEC (Ed. 2); IEC (Ed. 1.), Application class A. This data sheet complies with DIN EN Made in EU

20 PV Panels: Warranties InnoVentum s Solar Power Set offers attractive warranty conditions for PV panels included in the installation: 10-year product warranty for defects in material and/or workmanship 25-year linear performance warranty: deviation from the minimum power no greater than 0,6 % p.a., the minimum rated power after 25 years 83 % of the minimum rated power of crystalline modules 25

21 Micro Inverters The Micro Inverter System has revolutionized the solar industry's approach to small- and industrialscale installations. By distributing power conversion technology into the array(s), photovoltaic systems - No system-wide point of failure - Predictable, scheduled O&M only - - Increased safety with no HVDC - Conduct detailed performance analyses - Detect issues automatically - Take advantage of remote diagnostic tools - Proactively plan for maintenance instead of reacting to central inverter emergencies - Accelerated system installation time - - No need for procurement of specialized HVDC component parts x 8

22 Micro vs. String Inverters Solar systems are constantly affected by environmental factors, such as shade, dust and debris. Using a traditional string inverter means that everything is wired in series, and the lowest performing module determines the performance of the entire series. This is commonly known as The energy production of the system. Micro inverters allow each solar panel to operate independently and control the power from each with 99.6% performance of the entire system (20% increase on average). The ability to diagnose module issues remotely, precisely, quickly, and easily over the life of the PV installation results in capabilities, as well as the ability to claim module warranties easily where appropriate. standard. A micro inverter solution proposed by InnoVentum offers a 10 year warranty! Each micro inverter installed on a PV panel is working at low voltage, lowering the risk of failure. MICRO INVERTER EFFICIENCY HIGH LOW CONTROL HIGH LOW STRING INVERTER PERFORMANCE +20% INCREASE NO INCREASE MAINTENANCE COSTS LOW HIGH WARRANTY 10 YEARS 5 YEARS

23 Online monitoring tool We also offer an online monitoring platform with apps for ipad, iphone, Mac and PC so that you always have full control of your power production. Features: - With at-a-glance views of energy production and performance, system owners can see their system is performing as expected. - Easily compare current performance against a previous day week or month. - View historical weather data to understand variations in performance. - System status indicator tells you when the system is not performing as expected and what can be done to restore performance. - One-click sharing with integrated social media buttons. Accessible from any device with an Internet connection.

24 PV Mounting System Features: - Simple and extremely fast assembly from with SpeedClip and SpeedLock - -

25 Wooden Structure InnoVentum s unique wooden structure saves 350 kg of CO 2 per PV module in comparison with a classic steel structure supporting PV. Wood used for the structure is pressure impregnated Swedish pine with strength class C24, which guarantees maintenance-free use for 20 years. The modules can have different inclination to maximize power production: InnoVentum can deliver any choice of angle from 10 degrees to 40 degrees

26 Solar Power Set Mounting on the Roof The Solar Power Set is secured on the roof via 6 anchors attached to the drainage layer just bellow the substrate This system is designed to be held in place with the self-weight of the green roof The solution does not require penetration of the roof membrane the building

27 Even more energy: hybrid wind-solar systems Solar panels generate most of the energy during summer and only at daytime. If you wish to have self-produced energy all year round day and night, you may wish to consider a hybrid solution for your green roof installation comprising solar panels and a wind turbine. An example of the hybrid installation performance: Solar Panels Wind Turbine (Performance) Hybrid Wind- Solar Energy Producon ANNUAL ENERGY YIELD: kwh Jan Feb Mar Apr May Jun Jul Aug Sep Oct Nov Dec Dali Performance & 3 Solar Power Sets All calculations made at Malmö latitude, average wind speed 6 m/s

28 GREEN ROOF SPECIFICATIONS

29 Biodiverse Green Roof Diverse plant strategies can: Replicate or enhance the building's pre-development habitat Planting with native species such as: Hardy Succulents Grasses Herbs Build-up height: mm Weight: kg/m 2 Maintenance: minimal No irrigation required Picture: British Land - winner of the Guardian Sustainable Business award for biodiversity