1. Professional Report 1/ V5.7.12.15251 / 02.12.2011 / 12:12:49 Vela Solaris AG, their distribution partners or SPF do not accept any liability for the correctness of the specifications and the results. Location of the system Budaörs Longitude: 18.967° Latitude: 47.45° Elevation: 142 m This report has been created by: Gustavo Martín Sicardo P.I. La Isla C/Río Viejo 39 41703 Dos Hermanas (Sevilla) Map section

2. Professional Report 2/ V5.7.12.15251 / 02.12.2011 / 12:12:49 Vela Solaris AG, their distribution partners or SPF do not accept any liability for the correctness of the specifications and the results. System overview (annual values) Total fuel and/or electrical energy consumption of the system [Etot] 13,932.5 kWh Total energy consumption [Quse]14,679.5 kWh System performance (Quse / Etot)1.05 Comfort demandEnergy demand covered Overview solar thermal energy (annual values) Collector area25.6 m² Solar fraction total31.4% Solar fraction hot water [SFnHw]64.1 % Solar fraction building [SFnBd]18.2 % Total annual field yield5,404.8 kWh Collector field yield relating to gross area211.1 kWh/m²/Year Collector field yield relating to aperture area230 kWh/m²/Year Max. fuel savings571.9 m³(Gas): [Natural gas H] Max. energy savings6,005.4 kWh Max. reduction in CO2 emissions1,390.8 kg Solar fraction: fraction of solar energy to system [SFn] Horizon line Meteorological data-Overview Average outdoor temperature10.9 °C Global irradiation, annual sum1,206.7 kWh/m² Diffuse irradiation, annual sum594.9 kWh/m²

3. Professional Report 3/ V5.7.12.15251 / 02.12.2011 / 12:12:49 Vela Solaris AG, their distribution partners or SPF do not accept any liability for the correctness of the specifications and the results. Component overview (annual values) CollectorTermicol T10 S Number of collectors 10 Number of arrays 2 Total aream²25.6 Total aperture aream²23.5 Total absorber aream²24 Tilt angle (hor.=0°, vert.=90°)°45 Orientation (E=+90°, S=0°, W=-90°)°0 Collector field yield [Qsol]kWh5,404.8 Irradiation onto collector area [Esol]kWh32,239.5 Collector efficiency [Qsol / Esol]%16.8 Direct irradiation after IAMkWh16,999.8 Diffuse irradiation after IAMkWh13,473.6 BuildingMultifamily house, normal building Heated/air-conditioned living aream²130.9 Heating setpoint temperature°C19 Heating energy demand excluding DHW [Qdem]kWh12,332.1 Specific heating energy demand excluding DHW [Qdem] kWh/m²94.2 Solar gain through windowskWh13,005 Total energy losseskWh29,679.8 Convector Floor heatingSuelo radiante Number of heating/cooling modules-16 Power per heating module under standard conditions W850 Nominal inlet temperature°C50 Nominal return temperature°C40 Net energy from/to heating/cooling moduleskWh12,278.5

4. Professional Report 4/ V5.7.12.15251 / 02.12.2011 / 12:12:49 Vela Solaris AG, their distribution partners or SPF do not accept any liability for the correctness of the specifications and the results. Hot water demandConstant Volume withdrawal/daily consumptionl/d129.7 Temperature setting°C45 Energy demand [Qdem]kWh1,877.5 Pump Solar loop pumpWilo-Star-ST 25/6 Circuit pressure dropbar0.06 Flow ratel/h940 Fuel and electrical energy consumption [Epar]kWh31.5 Pump Space heating loop pumpPump, medium Circuit pressure dropbar0.006 Flow ratel/h696.6 Fuel and electrical energy consumption [Epar]kWh120.7 Storage tank Multifuncion1000l combi universal tank Volumel1,000 Heightm2 Material Steel Insulation Rigid PU foam Thickness of insulationmm80 Heat losskWh1,036.8 Connection losseskWh818.5 Loop Solar loop Fluid mixture Fluid concentration%33.3 Fluid domains volumel40.7 Pressure on top of the circuitbar4

5. Professional Report 5/ V5.7.12.15251 / 02.12.2011 / 12:12:49 Vela Solaris AG, their distribution partners or SPF do not accept any liability for the correctness of the specifications and the results. Solar thermal energy to the system [Qsol]kWh Heat generator energy to the system (solar thermal energy not included) [Qaux]kWh Solar fraction: fraction of solar energy to system [SFn]%

6. Professional Report 6/ V5.7.12.15251 / 02.12.2011 / 12:12:49 Vela Solaris AG, their distribution partners or SPF do not accept any liability for the correctness of the specifications and the results. Total fuel and/or electrical energy consumption of the system [Etot]kWh YearJanFebMarAprMayJunJulAugSepOctNovDec Solar thermal energy to the system [Qsol] kWh5405348465640533490444470450425529379232 Heat generator energy to the system (solar thermal energy not included) [Qaux] kWh118313171216211681614000010117333331 Heat generator fuel and electrical energy consumption [Eaux] kWh137803669251813791976000012520323854 Solar fraction: fraction of solar energy to system [SFn] %31.49.917.735.476.899.2100 8417.96.5 Total fuel and/or electrical energy consumption of the system [Etot] kWh139333702254313972039222213020543886 Irradiation onto collector area [Esol] kWh3223913171705268932003645362239693775325626811397983 Electrical energy consumption of pumps [Epar] kWh15232251853222262233 Heat loss to indoor room (including heat generator losses) [Qint] kWh4663672524422279267268276273252274470688 Heat loss to surroundings (without collector losses) [Qext] kWh48234555554532 Total energy consumption [Quse] kWh1468033822471159744523019319018517941819643425

7. Professional Report 7/ V5.7.12.15251 / 02.12.2011 / 12:12:49 Vela Solaris AG, their distribution partners or SPF do not accept any liability for the correctness of the specifications and the results. Collector Daily maximum temperature [ °C] Energy flow diagram