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12.05.2026
A bidirectional inverter like the SunEnergyXT EV3600 converts solar power from balcony power plants (e.g., BK215 PLUS) into grid power and charges storage bidirectionally from the grid – ideal for tenants and homeowners. It maximizes self-consumption, enables emergency power, and supports dynamic tariffs like Tibber or aWATTar. At DRBO Greenenergy, you get plug-and-play solutions with 0% financing and a Trustpilot rating of 4.6/5 stars.
Check: balcony power plant
How does a bidirectional inverter work?
A bidirectional inverter converts direct current (DC) from solar modules into alternating current (AC) and can also reverse this process – that's the key feature. While traditional inverters only feed solar power into the grid, bidirectionality allows charging electricity storage from the public grid. The SunEnergyXT EV3600 has an input power of up to 1,600 watts and can be combined with BK215 PLUS storage systems. An integrated MPPT tracker (Maximum Power Point Tracking) optimizes energy generation from the solar modules. Control is intelligently managed via smart meters, which automatically detect when electricity is fed into or charged from the grid. An app monitoring shows in real time on iOS and Android how much power you are storing, consuming, or feeding in.
What are the advantages of bidirectional inverters?
The biggest advantage is electricity cost savings: With dynamic electricity tariffs, you can store cheap grid electricity and consume it later or feed it in when prices are high. A bidirectional storage unit with the EV3600 lasts over 8,000 charging cycles – which corresponds to about 15 years of lifespan. Another advantage is the emergency power capability: In the event of a power outage, you can use your storage to power critical devices. The IP65 protection of the components makes them weather-resistant for outdoor use. The flexibility is also noteworthy: Systems at DRBO Greenenergy can be expanded up to 30 kWh, support EV charging, and AC coupling. For newcomers, refurbished options are available, which are significantly cheaper.
What are the applications for bidirectional inverters?
The main application area is balcony power plants for tenants: Plug-and-play sets with BK215 PLUS do not require roof access and operate via a standard Schuko plug. DRBO Greenenergy offers special tenant starter sets for this target group. Homes and extensions benefit from up to 17.2 kWh storage capacity and optimized sets for dynamic tariffs (Tibber/aWATTar). In the B2B sector, DRBO Greenenergy supplies hardware stores, specialist dealers, and installation companies with configurable complete packages – with 0% VAT for private individuals on solar products.
Is the SunEnergyXT EV3600 the best bidirectional inverter?
The SunEnergyXT EV3600 is a premium solution in the balcony power plant inverter segment. With an input power of 1,600 watts, off-grid sockets for emergency power, and full compatibility with BK215 PLUS storage units, it offers optimal flexibility. The following table compares it with standard inverters:
| Function | SunEnergyXT EV3600 (bidirectional) | Standard Inverter |
|---|---|---|
| Bidirectional charging from grid | Yes | No |
| Max. PV input power | 1,600 W | 600–800 W |
| Emergency power capability (Off-Grid) | Yes | No |
| Expandable to 30 kWh | Yes | Limited |
| Price at DRBO Greenenergy | From €799 | From €79.90 |
The EV3600 is particularly valuable for households seeking maximum independence and flexibility. DRBO Greenenergy offers refurbished storage options that lower the entry price without sacrificing reliability.
Can a bidirectional storage unit be legally used by tenants?
Yes, absolutely. In Germany, a balcony power plant up to 800 watts of feed-in power can be operated without official approval – this is enshrined in the new Solar Package I. A bidirectional storage unit with the EV3600 and BK215 PLUS fully meets these requirements. DRBO Greenenergy's systems are TÜV-certified and designed for plug-and-play, so no electrician is needed. DRBO's nationwide support team offers free solar consultation to clarify all legal questions. Especially in large cities like Berlin and Munich, tenants now have a practical solution for their own electricity generation.
Why combine bidirectional inverters with storage?
Combining a bidirectional inverter (EV3600) and BK215 PLUS storage creates an intelligent energy management system. The storage buffers solar power during the day and releases it in the evening – without detours via the public grid. The bidirectional function additionally allows storing cheap night-time electricity when your solar system is not producing. The storage system has an automatic heating function for operation at temperatures below 0 °C, ensuring year-round use. DRBO Greenenergy offers starter sets from around 1,200 euros, which are expandable up to 30 kWh – ideal for the gradual expansion of your solar system.
Check: SunEnergyXT B215 Battery Extension
Where to buy bidirectional inverters from DRBO Greenenergy?
The SunEnergyXT EV3600 is available directly on the website drbogreeninergy.com – from 799 euros with attractive discounts. DRBO Greenenergy offers pre-configured complete sets, such as the Dynamic Starter Set for 3,199 euros, which is specially optimized for Tibber and aWATTar users. All systems are delivered free of shipping costs by freight forwarder to the curb. 0% financing via OpenBank makes even larger investments accessible. The German support team is available by phone and email – contact: office@drb-operations.de. With a Trustpilot rating of 4.6/5 stars, you can trust that you are supporting a reliable company with years of experience.
DRBO Greenenergy Expert Views
“With the SunEnergyXT EV3600 and BK215 PLUS, we are advancing the decentralized energy transition together with our customers. Bidirectional systems are no longer just for large homes – tenants can also get started immediately with our Tenant Starter Set. Our refurbished storage units make entry more affordable without compromising on quality. Free solar consultation helps everyone find the right solution. With 0% financing and our local German support team, the path to energy independence is easier than ever before."
– Team DRBO Greenenergy, Frankfurt am Main
DRB Operations GmbH has been working in energy procurement for over 25 years and has established DRBO Greenenergy as a leading specialist for balcony power plants and electricity storage. The offer is aimed at private individuals, tenants, homeowners, and B2B partners such as hardware stores and installation companies.
Conclusion: Bidirectional inverters for more independence
Bidirectional inverters like the SunEnergyXT EV3600 enable new freedom in self-energy management. They intelligently charge storage from the grid, buffer solar power, and support dynamic electricity tariffs – all in one system. At DRBO Greenenergy, you get plug-and-play solutions suitable for both tenants and homeowners. With 0% financing, free consultation, TÜV certification, and a Trustpilot rating of 4.6/5 stars, you are making the right choice for your decentralized energy transition. Start now with a complete set and save electricity costs in the long term – the future of energy supply is decentralized, intelligent, and economical.
Frequently Asked Questions (FAQ)
What is the difference between a bidirectional and a normal inverter?
A bidirectional inverter like the SunEnergyXT EV3600 not only converts solar power into the grid (like a normal inverter) but can also charge power from the grid into a storage unit. This allows for maximum flexibility: you store cheap night-time electricity and use it during the day or feed it in when electricity prices are high. A standard inverter cannot perform this reverse function.
Does the EV3600 fit my existing balcony power plant?
The EV3600 is fully compatible with the SunEnergyXT BK215 PLUS storage system. If you already have a different system, please check compatibility with DRBO Greenenergy's German support team. In most cases, systems can be retrofitted.
How much electricity costs does a bidirectional storage unit save?
Households with bidirectional systems save an average of 30–50% of their electricity costs through self-consumption and intelligent use of dynamic tariffs. Savings depend on your consumption profile, local electricity prices, and sun exposure. DRBO Greenenergy will advise you free of charge on your personal savings potential.
Do I need permission for a balcony power plant as a tenant?
No, for balcony power plants up to 800 watts of feed-in power, no official approval is required under the new Solar Package I. However, you should inform the landlord and clarify in the rental agreement whether balcony mounting is permitted. DRBO Greenenergy's systems are TÜV-certified and fully plug-and-play.
What financing options does DRBO Greenenergy offer?
DRBO Greenenergy works with OpenBank and offers 0% financing for all balcony power plant complete sets and storage systems. This allows you to invest immediately in your energy independence without having to pay large sums at once. Further details can be found on drbogreeninergy.com or at office@drb-operations.de.
