Frequently Asked Questions

Yes, a customer account is required to place orders in our online store. Since we ship exclusively to business customers, this is necessary to verify your business status.

Registration is reserved for business customers. Please click “Register” in the upper right corner and fill out the form with your contact information. You will then be prompted to upload your business documents so we can activate your account.

To verify your account with ACTEC, we’ll need you to email us your business license or business registration. For all other countries, we’ll need your VAT ID number.

All prices shown are net, plus applicable sales tax and shipping costs. Many items have volume-based pricing—by purchasing larger quantities, you automatically benefit from lower unit prices.

Of course. You can reach our team by email at info@actec.eu or by phone at +49 721 988 995 98. We look forward to your call!

No, ACTEC is exclusively a wholesaler of components for photovoltaic systems. We do not offer our own installation service. 

All prices in the store already reflect the discount.

No, we do not have a minimum order amount.

All technical data sheets, unit certificates, and installation instructions can be found directly on the respective product detail page under the "Downloads" tab. If a document is missing, please contact our sales team—we have direct access to the manufacturers’ databases.

Yes, we offer project reservations for larger construction projects. Please contact your personal sales representative with your material list and the planned construction period. It is technically not possible to place a reservation in the shopping cart without completing a purchase.

Yes, our store is directly connected to the warehouse management system. The “In Stock” status means that the merchandise is physically available in Karlsruhe. For “Coming Soon” or “On Request,” we’ll be happy to provide you with the estimated delivery date of the next container arrival.

We currently do not offer export files (CSV) for our product data. However, upon request, we can provide you with various data regarding our products. Please feel free to contact us about this. 

You can check compatibility using the technical data sheets (voltage, current, MPP range) for the module and inverter. In addition, many manufacturers provide compatibility lists.

If an item reaches “end of life” during an ongoing project, we cannot guarantee that you will be able to obtain the same item again. We will only offer you technically equivalent alternatives.

There are generally no minimum order quantities for standard products. For larger projects or pallet-sized orders, we’re happy to review individual project pricing.

Items in stock are usually ready for shipment at short notice. After receipt of payment, shipment typically takes place within 24–48 hours, depending on the product and shipping time.

Yes, we deliver directly to your end customer’s address. Please specify the alternate shipping address as “construction site delivery” during checkout. For larger orders, please ensure that the site is accessible to trucks (up to 40 metric tons).

Currently, we do not offer a neutral delivery slip; ACTEC will appear as the sender to your end customer.

Shipments via freight carriers are generally announced by phone. When placing your order, please be sure to provide a mobile phone number—ideally that of the site manager or on-site installer—to avoid demurrage charges or wasted trips.

By default, delivery is “curbside.” This applies to deliveries to residential addresses or construction sites. For deliveries consisting solely of palletized modules, the customer must provide unloading equipment (forklift/wheel loader) on-site, unless otherwise agreed.

No, unfortunately that is not possible. You must place two separate orders.

We ship solar panels lying flat on special single-use or reusable pallets, professionally strapped and wrapped in plastic film. Mounting rails (long items) are packed separately.

The delivery address must be accessible by truck. Typically, unloading equipment (e.g., a forklift) is required. Please notify us in advance of any exceptions.
We ship modules upright on special single-use or reusable pallets, professionally strapped and wrapped in plastic film. Mounting rails (long items) are packed separately. Please check the packaging for damage immediately upon delivery.

Damage during transit or discrepancies must be noted immediately upon delivery and reported promptly. We will then handle the matter with the shipping carrier.

As a commercial customer, you are obligated under § 377 of the German Commercial Code (HGB) to inspect the goods for completeness and shipping damage immediately upon receipt. Any externally visible damage must be noted immediately on the driver’s waybill. Later complaints regarding shipping damage often cannot be accepted without this notation.

For technical defects (e.g., inverter malfunction), please use our form in the dealer area. In many cases, handling the issue directly through the manufacturer’s service department is faster, as they can access the system via remote maintenance and ship replacement units directly. We’re happy to assist you with the necessary contact information.

Report the damage by providing a photo of the nameplate, a description of the fault, and measurement results (string voltage, etc.). Once approved by the manufacturer, you will receive a replacement. Please store the defective module until a final decision on the resolution is made, as manufacturers often arrange for the module to be returned for analysis.

As a wholesaler, we are liable under the statutory warranty for the freedom from defects of the goods. Costs exceeding the mere replacement delivery (e.g., labor, aerial lifts) are generally covered by the manufacturer’s warranty flat rates, provided the manufacturer stipulates this in its warranty terms. We will assist you in submitting these claims.

Since the right of withdrawal for consumers does not apply in B2B-transactions, returns of defect-free goods are only possible as a gesture of goodwill.

If you have received the wrong item, please report this in writing within 48 hours, specifying the delivery note number. We will immediately arrange for a prompt replacement delivery of the correct goods (subject to availability) and/or the pickup of the incorrect delivery.

Obvious defects must be reported immediately upon receipt of the goods. Hidden defects must be reported as soon as they are discovered. Warranty periods are based on the manufacturer’s specifications.

We generally require the invoice number, serial numbers, a description of the defect, and clear photos.

By default, we offer payment in advance via bank transfer. For verified existing customers and partner companies, purchase on account (with payment terms) is also available following a successful credit check.

To help protect the environment, we send our invoices electronically via email to the billing address on file in your customer account. You can also request copies of all invoices at any time.

Currently, we do not offer the option to add your reference number or a comment to your order.

Yes, provided you have a valid VAT identification number (VAT ID) and a shipping address in another EU country, the shipment is considered a tax-exempt intra-Community supply. The validity of the VAT ID is automatically verified during registration.

For deliveries to Switzerland, we issue the invoice net (excluding German VAT). Please note that Swiss customs duties and Swiss import VAT apply upon import and are the responsibility of the recipient.

Your credit limit is determined based on your past payment history and external credit reports. If you need an increase in your limit for a larger project, please contact our accounting department or your sales representative well in advance of placing the order.

No, for accounting and tax reasons, each order is billed separately.

In the event of late payment, we reserve the right to suspend further deliveries, charge late fees, and adjust the credit limit. Our B2B-terms of payment apply.

While kWh (= kilowatt-hour) is the unit of measurement for work—that is, power multiplied by time—kWp represents the module’s rated power in kilowatt-peak. These values are determined under Standard Test Conditions (STC). The annual ratio of kWh to kWp is referred to as the specific system yield.

The abbreviation “AC” is used internationally to stand for “alternating current.” In contrast, “DC” stands for “direct current.”

MPP is the abbreviation for Maximum Power Point. It describes the point of maximum power output for a solar panel, where the product of current and voltage is at its highest. This point is not constant but depends on irradiance, temperature, and the type of solar cell.

An off-grid system is a stand-alone system that forms a closed loop without drawing power from or performing grid feed-in. An on-grid system, on the other hand, is a PV system with a power-generating solar generator that is connected to the public grid.

Load profiles describe the distribution of the average annual electricity load at specific times of day for weekdays, Saturdays, and Sundays.

The term “load management” encompasses all (technical) measures aimed at consuming electricity at the very moment it is being produced by the PV system. This allows you to further increase your self-consumption rate. This can be achieved through the use of smart load management devices or by automatically scheduling the operation of appliances (e.g., using timers).

Smart grids are intelligent power grids that combine generation, storage, and consumption. Through centralized control, all components are optimally coordinated, while power fluctuations—particularly those caused by fluctuating renewable energy sources—are balanced out in the grid. This interconnection is achieved through the use of information and communication technologies (ICT) as well as decentralized energy management systems to coordinate the individual components.