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All questions Often Asked
Exactly what services does Keyhan Energy provide?
Our work comes down to four headings: engineering, design and optimization of energy systems; custom manufacturing and reverse engineering, i.e. localization; strategic supply of equipment and materials; and turnkey execution and project management. Alongside these services, we design and manufacture some of the equipment ourselves, from the telecom rectifier and cathodic protection power supply to battery chargers. So depending on your needs you can get engineering consultation only, buy a single piece of equipment, or hand us the whole project from design to handover. If you're not sure which category your job falls into, we'll clarify it together on the first call.
Where do we start with a solar power plant, and how do we know what capacity we need?
The simplest starting point is the site's free calculator: keyhanenergy.net/solar-calculator. You enter the list of consuming devices and their operating hours, pick the project city from 30 Iranian cities, and instantly see the required power in kilowatt-peak, number of panels, inverter power, battery capacity and annual energy. This output is a preliminary engineering estimate, not a final design; the definitive figure comes after reviewing actual site conditions such as available space, shading and the status of the grid connection. The best approach is to have the calculator result in hand and call 0996 617 1347 so the technical conversation can start from your own numbers.
What is the difference between grid-connected, hybrid and standalone (off-grid) systems, and which one suits us?
A grid-connected system has no battery and works alongside grid power; it is the common choice where grid power is available and stable and the main goal is cutting energy costs. A hybrid system has a battery so that sensitive loads stay on during outages, and naturally costs more and is more complex. A standalone or off-grid system is for places with no grid access at all, where all consumption must come from the sun and batteries, so battery capacity plays a decisive role. Choosing among the three mostly comes down to two things: whether there is a grid at your site, and how costly an outage is for your work. The site calculator also shows the required battery capacity so you can weigh these differences with your own numbers.
We have equipment that has become hard to source or support; can you build a domestic equivalent?
Yes; custom manufacturing and reverse engineering is one of our four service areas, and the lack of the original manufacturer's drawings and documents is not in itself an obstacle. The assessment starts from the sample itself and its real operating conditions: voltage and power, type of load, installation environment and the role that part plays in your system. The more you can give us — a photo of the nameplate, an old datasheet, or even a description of recurring failures — the faster and more realistic the initial conclusion will be. If the review shows that localization is not cost-effective for you, we say so plainly and propose a sourcing route instead.
Which products do you manufacture yourselves?
Our manufactured products include the telecom rectifier, cathodic protection switching power supply, smart three-phase bridge converter controller, sealed lead-acid (SLA) battery charger, lithium battery switching chargers, a 1000 VA single-phase UPS with pure sine-wave output, the atmospheric water generator (AWG) and the solar floodlight. Alongside these we also make the advertising ring light, the digital automatic tire inflator, smart touch switches and the industrial scent diffuser. You can request a quote for any of them directly, and if the standard specifications do not fit your situation, we will look into a custom build. The advantage for you is that for these items you deal directly with the manufacturer, not an intermediary.
Other questions
What are the prices, and what should we send for a quote?
We do not list prices on the site, because the price of each item depends on exact specifications, order quantity and execution conditions; a rectifier or a charger with two different specifications is in effect two different products. That is why pricing is by quotation and is given after we hear your needs, so that the number we quote is real. To request a quote, write down the unit's application, power and operating voltage, quantity required and installation environment conditions and send them from the "Contact us" page, or email info@keyhanenergy.net. For faster coordination, 0996 617 1347 is available around the clock and the office line 021 7730 3962 is also available; if the specifications are not yet final, send your initial statement of needs and we will refine it together.
Do you have a track record of projects at industrial and commercial scale?
Yes; completed solar plants include 200 kW rooftop in Loshan, 400 kW rooftop at ISACO and 400 kW in Bardaskan. Turnkey execution and project management is one of our four service areas; that means engineering and design, equipment supply and execution can run as one integrated path under a single project management, so you do not deal with several separate contractors. If your project is on the same scale, it is best to contact us directly from the start so a dedicated design is done for your own site conditions.
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