Solar Inverters (Updated for 2020-2021)
Our portfolio of solar inverters include both grid tied and off-grid solar panel pv power inverters. We provide wholesale solar prices for retail customers for any type of wind and sun project. The DC power inverters are the heart of a solar photovoltaic system; therefore the reliability factor is crucial at the selection. These solar products convert DC (direct current) electricity generated by photovoltaic modules or wind turbines and stored in batteries into AC (alternating current) power required to run conventional appliances and/or for connection to the grid.
Buy the best solar inverters in our one stop solar shop
Browse power inverters from major brands like Fronius, SolarEdge, SMA, Victron, Enphase, Solis, Sungrow, Outback Power, Kostal and Solax. Some of the power Inverters ship straight from our distribution center in Portland, OR for USA and Canada customers. For European Union and UK customers the products are shipped out of Cardiff, UK and Neu-Anspach, Germany.
Performance, quality and guarantee
The solar energy products we sell have the best performance, quality and best guarantee terms in the market. As a leading global retailer and solar inverter distributor our purchasing power enables us to deliver these inverters at best retail prices in every market we operate. All our power inverters come for world leading manufacturers. The inverter product range covers power ranges between 250W up to 500kW, suitable for all types and sizes of photovoltaic installation.
These solar energy products can be ordered 24/7 from our online shop. ZEROhomebills.com and its partners stock solar power products in 4 warehouses around the globe. Share your experience, learn from others, follow-up on our training and webinars in our ZERO Home Bills Community.
SMA Solar Inverter
The German company is the world number one manufacturer of grid connect power inverters and off grid inverters. SMA features SMA Sunny Boy, SMA Sunny Tripower and SMA Sunny Island models for projects ranging between 3kW and 100kW. The SMA Technology AG products are available from both our European and USA warehouses.
SolarEdge PV Inverters for Sale
SolarEdge is a world leader in optimized solar system components. The SolarEdge systems utilize optimizers on each solar panel to get the maximum power to the solar inverter. A perfect solution when shading is an issue. We store SolarEdge solar components both in our European and USA warehouses.
Fronius PV Inverters for Sale
Victron Solar Inverters for Sale
Wholesale solar prices. The Dutch Victron Energy is the word leader in off-grid power inverters and charge controller manufacturing. Victron off-grid solar components have a strong reputation for technical innovation, reliability & quality. Victron products are available from our European stock.
Selectronic Solar Inverters
Huawei Solar Inverters for Sale
Huawei is one of the top 10 inverter manufacturers in the world and the No 1 central inverter producer globally. The company focuses on residential, commercial and utility scale grid tied inverters. The Huawei products are available from our European warehouse.
Sungrow Inverter for Sale
Solis PV Inverters for Sale
Solis Ginlong has more than 20 years of experience in Solar inverter manufacturing. The power inverters feature single phase, thee-phase and hybrid inverters. Solis products are available from our stock in Europe.
Buy Growatt Solar Inverters
Goodwe Power Inverter for Sale
Although our Goodwe range of solar inverters are not that extensive we do stock the lower range of Goodwe inverters as well as Goodwe Hybrid inverters for residential use. Goodwe products are delivered from the European warehouse.
Delta Solar Inverters for Sale
ABB Solar Inverters
The German ABB is among the top solar inverter manufacturers. We stock ABB products from 3.3kW up to 27.kW to accommodate both residential and commercial solar needs. ABB solar components are delivered from Germany.
Kostal Inverter for Sale
Steca Solar Inverter for Sale
Phocos Solar PV Inverters
The German Phocos with manufacturing facilities in China is one of the key players to consider hen it comes to off-grid solar system. Phocos inverters are available from our stock in Europe.
Solax Solar Inverters
Zeversolar Solar Inverter
The company is a subsidiary of SMA Solar AG which manufactures its inverters in China. Zeversolar inverters are delivered from our European warehouse.
Enphase Energy Solar Microinverter
APS Solar Microinverters
Wholesale solar pricing for retail customers. All APsystems (APS) microinverters are engineered to comply with local grid requirements, ensuring safety of system installers and emergency responders. APS products come with a 10 year standard guarantee. The APS microinverters are available via our USA warehouse.
Studer Innotec Inverter
Outback Power Inverters
The American OutBack Power designs and manufactures off grid and grid connected solar plus storage systems for energy independence. OutBack off-grid inverter/chargers are robust with a proven track record in use for remote power generation. The American made products are available from our European warehouse.
SOLAR PV INVERTERS 101
What is a power inverter?
An inverter is a critical piece of equipment in any PV system. The inverter takes DC power, either from your solar panels or batteries, and turns it into AC power, ready and usable for your household appliances. Grid-tie and off-grid solar systems use different types of inverters! Do not mix the two.
Grid-Tie Inverters
In a utility grid-tied system, solar panels connect directly to an inverter which ties into your main household electrical panel. It sends power into the home to run appliances and turns back the meter with excess energy. Grid-Tie inverters come in several options: string inverters, microinverters, and optimizers. Each varies with features and costs.
String Inverter
- Lowest cost
- Multiple MPPT inputs
- Secure Power Supply provides daytime backup during an outage
Though string inverters derive from the oldest technology, modern string inverters have improved substantially and provide a cost effective option for many. In a string inverter system, solar panels are wired in a series string for high voltage (typically 300-600VDC) We have sold the SMA Sunny Boy and SMA Tripower string inverters for years and recommend these for installations where solar panels stay relatively free of shade. In all the other occasions the recommended inverter would be the SolarEdge.
PV Optimizers
- Easy and safe installation
- Module-level monitoring included
- Large string sizes
You have shading issues? Optimizers are DC-DC converters that connect to each solar panel, similar to a microinverter but a central inverter still handles the DC-AC inversion. Solar panel optimizers attach to each panel for easier and safer installation, easy expansion, bigger string sizing, and module-level monitoring. SolarEdge is a leader in optimizer technology and one of the most popular residential inverters. We have this installed on many occasions. The solar panel optimizers combine the best features with a competitive price. We do sell SMA Tigo optimizers as well.
Microinverter
- Easy to install
- Module-level monitoring with IQ Envoy
- Expandable and modular
Microinverter systems have a small inverter attached to each panel. This type of inverter costs more, but it is also expandable, safe and easy to install, and is capable of monitoring every individual solar panel. Because each panel can operate independently, microinverters are a better option if there is shade on part of the solar array from trees, buildings or other obstacles. Microinverters tend to be the most expensive inverter system, but they provide key benefits like ease of installation, expansion, and module-level monitoring. We recommend Enphase Energy IQ microinverters for anyone looking for these features.
Pure Sinewave
- More expensive
- High quality output power
- Compatible with most appliances
You will hear inverter manufacturers use phrases such as pure sinewave and modified sinewave. This is a measurement of the quality of the AC output power. Pure sinewave inverters put out power that is as good, or potentially better, than what is coming from the power grid. Almost all appliances will work with pure sinewave inverters.
Modified Sinewave
- Lower cost
- Low quality output power
- Only compatible with certain appliances
Modified sinewave inverters have lower power quality which causes issues with certain appliances. Motors, pumps and compressors (like your fridge) will tend to run hotter and burn out quicker. Modified sinewave inverters can be problematic for sensitive electronic devices, often causing lines on your TV screen and a buzzing sound from the speakers. Some appliances won’t work at all on a modified sinewave inverter. For these reasons, we recommend sticking with a pure sinewave inverter unless you are sure your appliances can work on modified sinewave power.
Frequently asked questions about solar power inverters
- Fronius Symo, GEN24
- SolarEdge HD
- SMA Sunny Boy AV solar inverter
- Sungrow
- ABB
- Solis Ginlong
- Growatt
- Huawei
- Outback
- Morningstar
Your solar panel energy system can’t send power to either your home or the utility grid without some help. A solar panel power inverter is what provides that help. The main purpose of the solar inverter is to translate or “invert” / “convert” the solar energy—generated by your solar panels—from DC to AC so that your home and utility grid can use it.
No, normally solar inverter do not need servicing or maintenance during their lifetime; although periodic software updates are needed in order to have your system up and running. While solar panels have no moving parts and can be expected to continue working past 25 years, inverters are arguably the most likely part of the solar panel system to fail. Depending on the brand, they need regular replacement every 5-10 years.
A good quality solar energy inverter is an essential part of your panel set up. it’s an intelligent piece of kit that connects to your system and should be placed where you can easily get at it. It has two jobs:
- to maximise the available energy being generated from your panels.
- to change the DC current from the panels in to AC current so that it’s compatible with everyday appliances and exporting to the national grid.
There are different ways to achieve this and advantages for each approach. (We go in to the technical detail below.)
Type of solar power inverters
String inverters
A string is a chain of panels connected together in series. This is the most basic inverter system. All the panels in a string must be at the same pitch and orientation, otherwise there will be inefficiencies in the system. Many string inverters have 2 or even 3 MPPTs (Maximum Power Point Tracking), which means that you can have a different string of panels on each MPPT. This could work well for an east/west set up.
Most inverters now have internet connection capability, so you can keep an eye on your system using apps or web browsers, even when you’re away. The technology also raises awareness of your energy usage, encouraging you to be more sustainable, and save more money.
Microinverters
One of the disadvantages of string inverters is that if there is a fault or shading on one panel in the string, it will affect the performance of all the panels on the same string. In a microinverter system each panel has an inverter all to itself. Each panel is therefore isolated so any faults or shading will be isolated. As microinverters are often hooked up to the internet, problems with specific panels are quickly and easily identified, saving a huge amount of investigation time.
Optimised inverter system
A hybrid of the microinverters and string inverters, separates the two jobs of an inverter. There are optimizers behind each panel which carry out the role of MPPT therefore isolating any shading or fault issues. These optimizers are connected to a central inverter which can work more efficiently as it is always presented with the same voltage from the panels (string inverters have to deal with variable voltages). These systems are also internet connected which allows pro-active maintenance. So if there’s a fault, your installer will get an email alert and can respond quickly and accurately.