Solar Power (PV) 4.64 kW System: Key Attributes

Key Features

Solar power panels need the sun’s light so they only generate electricity during the day, so it’s most economical to install a system that can supply your expected daytime electricity usage. Our smallest solar power system needs just 10 sqm of roof space to generate around 30% of the average Australian household’s energy use. The more power you would like to generate the bigger the roof space you will need.

The state of the art SMA Sunny Boy SB4000TL-20 inverter maximises the power output of the system under varying conditions. This 4.64 kW System can also use the SMA Tripower STP5000TL-20 Inverter for connection to three phase power supplies. 

Our extensive network of Solahart Experts are qualified to assess your home and provide you with the best systems to meet your family’s needs. Our installers are trained to the highest standards to ensure the safety and effectiveness of your system. All this is backed by our comprehensive warranties and the peace of mind you’ll get from dealing with Australia’s solar pioneer.

  •  Single and Three Phase Inverter Options
  •  Improved efficiency in varying light conditions
  •  Trouble Free - designed and engineered for Aussie conditions
  •  Independently rated as one of the highest performing panels.

* The suggested price is comprised of RRP less the applicable solar incentive and excluding installation. the solar incentive value applies to PVR4640S40 solar power system in Zone 3 and assumes a STC price of $27.

^ Energy savings of up to 6400 kWh/year is based on the average amount energy produced per year by the PVR4640S40 solar power system in Zone 3. Savings and incentives will vary depending upon your location, type of Solahart system installed, orientation and inclination of the solar panels. 

† Solahart Warranty Details:

  • Solar Panels: 10 years, 
  • Inverter, Racking and Balance of System components: 5 years,
  • Labour: 5 years,
  • For full warranty details refer to the Solahart Owner’s Guide.

PVR4640S40 Specifications

Solar Panel Specifications

Panel Electrical Characteristics
Maximum Power (Pmax)
Power Class
Open Circuit Voltage (Voc) 38.8V
Short Circuit Current  (Isc) 9.58A
Maximum Power Voltage (Vmp) 32.1V
Maximum Power Current (Imp) 9.05A
Module Efficiency (%) 17.4
Temperature Coefficients  
-0.36%/ ˚C
-0.30%/ ˚C
+0.066%/ ˚C
Maximum System Voltage  ( IEC ) 1000V


Panel Specifications 
Dimensions 1675 mm x 997 mm x 38 mm
Weight 18.5 kg 
Cell Type and configuration 120 REC HC multi-crystalline cells
6 strings of 20 cells
Glass 3.2mm solar glass with anti-reflection surface treatment
Back sheet Highly resistant polyester
Frame Anodised aluminium
Temperature range -40°C to + 85°C
Junction Box Protection Class IP 67
Connectors Multi-contact MC4 
Part Number REC290TP2
Solahart Warranty 10 years (5 years labour) on panels*


Solar Inverter Specifications

Technical data and types: Sunny Boy 4000TL
Input (DC)
Max. DC power (@ cos Φ =1) 4200 W
 Max. input voltage 750 V
 MPP voltage range / rated input voltage 175 V - 500 V / 400V
Min. input voltage / initial input voltage 125 V / 150 V
Max. input current A / input B 15 A / 15 A
Max. input current per string input A / input B 15 A / 15 A
Number of independent MPP inputs / strings per MPP input 2 / A:2; B:2
Output (AC)
Rated power (@ 230 V, 50 Hz) 4000 W
Max. apparent AC power 4000 VA
Nominal AC voltage 220 V, 230 V, 240 V
Nominal AC voltage range 180 V – 280 V
 AC grid frequency / range 50 Hz, 60 Hz / -5 Hz +5 Hz
 Rated power frequency / rated grid voltage 50 Hz / 230 V
 Max. output current 22 A
 Power factor at rated power 1
 Displacement power factor, adjustable 0.8 overexcited - 0.8 underexcited 
 Feed-in phases / connection phases 1 / 1
 Max. efficiency / European weighted efficiency 97% / 96.4% 
Protection devices  
Ground fault monitoring / grid monitoring


DC reverse polarity protection / AC short-circuit current capability •/• 
All-pole sensitive residual-current monitoring unit  • 
Protection class (according to IEC 62103) / overvoltage category (according to IEC 60664-1)  I / III 
General data 
Dimensions (W / H / D) in mm  490 / 519 / 185 
Weight  26 kg
Operating temperature range  -25°C … +60°C
Noise emission (typical)  25 dB(A)
Self-consumption (night)  1 W 
Topology  Transformerless 
Cooling concept  Convection 
Degree of protection (according to IEC 60529)  IP65 
Climatic category (as per 60721-3-4)  4K4H
Maximum permissible value for relative humidity (non-condensing) 100 %
DC connection / AC connection  Sunclix / Spring clamp terminal
Display Graphic
Interfaces: Bluetooth® • 
Warranty 5 years* 
Certificates and approvals CE, VDE0126-1-1, VDE-AR-N 4105, EN504381, IEC 61727, AS 4777
SMA type designation  SB4000TL-21 

*For full details see Solahart Owners Guide & Installation Instructions • Standard features o Optional features Data at nominal conditions
1 Does not apply to all national appendicies of EN50438 / ² 4600 VA with VDE-AR-N-4105 / ³ 4825 W with VDE-AR-N 4105

How Solar Power (PV) Systems Work

Solar power panels generate electricity from sunlight. The roof mounted solar panels are made up of many photovoltaic (PV) cells. These cells collect the sun’s light and convert the energy into DC electricity. This is fed through an inverter and converted to 240V AC electricity to power your home.

The amount of electricity you can produce depends on the number and efficiency of the panels, the size of the inverter and the amount of sunlight in your location. Your home remains connected to the electricity grid so when you generate more electricity than you need you can feed it into the grid or purchase more from the grid when you are not producing enough to meet your requirements.

The Science Explained

The amount of energy from the sun that falls on Earth's surface is enormous. All the energy stored in Earth's reserves of coal, oil, and natural gas is matched by the energy from just 20 days of sunshine. Outside Earth's atmosphere, the sun's energy contains about 1,300 watts per square meter. About one-third of this light is reflected back into space, and some is absorbed by the atmosphere (in part causing winds to blow).

By the time it reaches Earth's surface, the energy in sunlight has fallen to about 1,000 watts per square meter at noon on a cloudless day. Averaged over the entire surface of the planet, 24 hours per day for a year, each square meter collects the approximate energy equivalent of almost a barrel of oil, or 4.2 kilowatt-hours of energy every day. Deserts, with very dry air and little cloud cover, receive the most sun—more than six kilowatt-hours per day per square meter


How does a solar cell turn sunlight into electricity?

The sun's light (and all light) contains energy. Usually, when light hits an object the energy turns into heat, like the warmth you feel while sitting in the sun. But when light hits certain materials the energy turns into an electrical current instead, which we can then harness for power. Solar technology uses large crystals made out of silicon, which produces an electrical current when struck by light. Silicon can do this because the electrons in the crystal get up and move when exposed to light instead of just vibrating in place to make heat. The silicon turns a good portion of light energy into electricity.

The most important components of a PV cell are two layers of semiconductor material generally composed of silicon crystals. On its own, crystallized silicon is not a very good conductor of electricity, but when impurities are intentionally added—a process called doping—the stage is set for creating an electric current. The bottom layer of the PV cell is usually doped with boron, which bonds with the silicon to facilitate a positive charge (P). The top layer is doped with phosphorus, which bonds with the silicon to facilitate a negative charge (N).

When sunlight enters the cell, its energy knocks electrons loose in both layers. Because of the opposite charges of the layers, the electrons want to flow from the n-type layer to the p-type layer, but the electric field at the P-N junction prevents this from happening. The presence of an external circuit, however, provides the necessary path for electrons in the n-type layer to travel to the p-type layer. Extremely thin wires running along the top of the n-type layer provide this external circuit, and the electrons flowing through this circuit provide the cell's owner with a supply of electricity.

How PV Cells Work

Most PV systems consist of individual square cells averaging about six inches on a side. Alone, each cell generates very little power (approximately four watts), so they are assembled together panels encased in glass and plastic to provide protection from the weather. These panels are either used as separate units or grouped into even larger arrays to form a solar power (PV) system.

Solar Power System Design

The Solahart Solar Power system is comprised of two main components; a string or array of photovoltaic panels and an inverter. The photovoltaic (PV) panels transform solar radiation into electrical energy in the form of direct current (DC). In order to utilise this energy and feed it back into the grid, the direct current is transformed into alternating current (AC) by the inverter. This conversion is also known as DC to AC inversion.

The alternating current generated by the inverter is fed into the main switchboard, which in turn is connected to the electricity grid. If the energy generated exceeds that required by property demands, your electrical network operator may allow the difference to be directly injected into the grid and become available to other users. Energy injected into the grid can be measured by electricity network operators as either gross (everything generated) or nett (excess generated). Injected energy may or may not be purchased by the local electrical network operator according to national and local standards, and regulations.

Solahart Canberra Alt Tag

PV Panel Orientation & Inclination

To maximize system output, install panels at optimum orientation and inclination (tilt) angles. The specifics of this will depend on the installation location and must be calculated by a qualified system designer. The ideal angle for mounting a panel should result in the sun’s rays falling perpendicular (i.e. at a 90° angle) to the panel surface.

Panels should be installed in a shade free position. Even minor or partial shading of the panels/array will reduce system output. A panel is considered shade free when it is both:

  • Free from shade or shadows all year round.
  • Exposed to several hours of direct sunlight, even during the shortest days


Trouble-Free, Worry-Free PV: That’s the Solahart difference: Download

Why Solahart Solar Power?: Download

Solar Power FAQ: Download

Solahart Solar Power (PV) Panel: 290W Series: Download


Solahart Solar Power (PV) Inverter Smart Connect 4.0 and 5.0: Download

Installation Manuals

Solahart Single Phase PV Systems Owner's Guide: Download

Solahart Single Phase PV Systems Installation Manual: Download

Addendum - Earth Fault Alarm Instructions: Download

Solar Incentive Forms

Small-scale Technology Certificate Assignment Form: Download