Sample calculation with SUNNY DESIGN

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1 Sample calculation with SUNNY DESIGN SMA Solar Technology AG Sonnenallee Niestetal Project name: Sunny Boy 2.5 kw -Self-consumption --- Grid voltage: 230V (230V / 400V) System overview 12 x.sma SMA Demo Poly 240 (PV array 1) Azimuth angle: 0, Tilt angle: 30, Mounting type: Roof, Peak power: 2,88 kwp 1 x SB 2.5-1VL-40 System Monitoring Sunny Portal SMA Energy Meter Technical data Total number of PV modules: 12 Performance ratio (approx.)*: 86,5 % Peak power: 2,88 kwp Spec. energy yield (approx.)*: 986 kwh/kwp Number of inverters: 1 Line losses (in % of PV energy): --- Nominal AC power: 2,50 kw Unbalanced load: 2,50 kva AC active power: 2,50 kw Self-consumption: 1.332,51 kwh Active power ratio: 86,8 % Self-consumption quota: 46,9 % Annual energy yield (approx.)*: 2.838,60 kwh Energy usability factor: 99,8 % Self-sufficiency quota (energy consumption in %): 29,6 % Signature *Important: The yield values displayed are estimates. They are determined mathematically. SMA Solar Technology AG accepts no responsibility for the real yield value which can deviate from the yield values displayed here. Reasons for deviations are various external conditions, such as soiling of the PV modules or fluctuations in the efficiency of the PV modules. 1 / 6

2 Evaluation of design Subproject 1 Ambient temperature: Annual extreme low temperature: -13 C Average high Temperature: 19 C Annual extreme high temperature: 33 C 1 x SB 2.5-1VL-40 Peak power: Total number of PV modules: Number of inverters: Max. DC power (cos φ = 1): Max. AC active power (cos φ = 1): Grid voltage: Nominal power ratio: Displacement power factor cos φ: Technical data 2,88 kwp ,65 kw 2,50 kw 230V (230V / 400V) 92 % 1 SB 2.5-1VL-40 Input A: PV array 1 12 x.sma SMA Demo Poly 240, Azimuth angle: 0, Tilt angle: 30, Mounting type: Roof Number of strings: PV modules per string: Peak power (input): Input A: ,88 kwp Typical PV voltage: Min. PV voltage: Min. DC voltage (Grid voltage 230 V): Max. PV voltage: Max. DC voltage: Max. current of PV array: Max. DC current: 330 V 303 V 50 V 495 V 600 V 8,1 A 10 A PV/Inverter compatible 2 / 6

3 System Monitoring PV system Subproject 1 1 x SB 2.5-1VL-40 System Monitoring Within the PV system SMA Energy Meter Universal acquisition of measured values for intelligent energy management External Sunny Portal Internet portal for monitoring PV systems and for the visualization and presentation of PV system data 3 / 6

4 Self-consumption Information on self-consumption Load profile: Energy consumption per year: 4-person household 4500 kwh Increased self-consumption Result Without increased self-consumption The displayed results are estimated values which are derived mathematically. SMA Solar Technology AG accepts no liability for the actual self-consumption which may deviate from the values displayed here. The potential self-consumption essentially depends on individual load patterns, which may deviate from the load profile on which the calculation is based. 4 / 6

5 Efficiency analysis Details Electricity cost savings in the first year (approx.) 373 EUR Comparison of annual electricity costs Today without PV system Total electricity cost savings after 20 year(s) (approx.) Total revenue from grid feed-in after 20 year(s) (approx.) Expected amortization period in years (approx.) EUR EUR 9 In 20 year(s) without PV system Today with PV system The total investment is 4.460,00 EUR The specific capital expenditure costs are 1.548,61 EUR 5 / 6

6 Efficiency analysis Cost structure PV system costs The total costs for the PV modules are 1.920,00 EUR The average power degradation of the PV modules is 0,50 % The total costs for the inverters and PV system monitoring (incl. SMA Energy Meter) are 1.040,00 EUR The costs for planning and installation are 1.500,00 EUR The annual fixed costs are 60,00 EUR The total investment is 4.460,00 EUR The specific capital expenditure costs are 1.548,61 EUR Financing The currency is EUR The equity ratio is 100 % The debt ratio is 0 % The grant amount is 0,00 EUR The inflation rate is 3,00 % The analysis period of efficiency is 20 Years Selected type of credit: Annuity loan The credit period is 10 Years The redemption-free period is 0 Years The interest rate is 4,0 % Electricity purchase costs and feed-in tariff The electricity purchase price is 0,280 EUR/kWh Special tariffs are not taken into account The annual rate of electricity price increase is 3,0 % The feed-in tariff is 0,129 EUR/kWh The duration of the feed-in tariff is 20 Years The feed-in revenue on expiration of the remuneration period is 0,050 EUR/kWh 6 / 6

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