Surprisingly you're not entirely correct; While structurally from visual and basic perspective you are mostly on point the conversion systems, and details of both would be different; While I do agree solar panels should require electronics [they don't for now] I do not agree they should need as much electronics as Wind Turbines; The following might be realistic requirements for large solars/wind turbines:
Large solar:
X metal, 1 electronics, 1 mechanical parts
Wind turbines:
X Metal, X concrete, not less than 1 electronics, 1-2 mechanical parts
However at this point you see they would not differ much, if not for when they produce power and how they produce power;
Lemme break down the similarities of power production requirements between both and how they differ;
Both have structural system of some kind of metal;
Solar requires [at least for now] additionally some electronics for inverters... oh wait, they don't - we are using accumulators as such our energy grids seem to be primarily DC; no electronic parts short of semi-conductors to create panel itself [with both P and N type oxide semiconductors known, it is worth noting that Mars have very high silicon content on surface, making it easy to aquire for purposes of creation of silicon-based devices; Note: currently PV modules are created with silicon as primary material, and Czochralsky process requires only small seed crystals to create large silicon wafers, which then with minor complexity of operation and small amount of conductors, e.g. metals can be made into PV surfaces; Note - process is not as complex as many people believe]; Minor electronics to use trackers; How minor? 2 sensors, 2 motors, sensors are extremely small, motors do not need to be strong depending on materials from which structural integrity of PV mounting system is controlled; While motors COULD technically be considered enough towarrant mechanical parts; I doubt electronics of almost literally 2 sensors and some copper cabling would be anywhere near needed; If you want to go to extremes - 4 sensors are enough; If you want to analyze it perfectly and use dedicated motors and sensors: 5 sensors [if day; and 2 per axis required], 1 control chip [assuming you are not using standard cable based tricks to remove it entirely], 3 motors [two axis for PV pannels, 1 to move them up and down on the central pole;
Wind turbines on the other hand are surprisingly - more complex systems:
you need conversion of mechanical, rotational energy to DC or AC; Inverter if it works in different mode than rest of the grid, control systems to make sure you do not short circuit due to overload of capabilities, breaks to halt the rotors if it would speed up beyond capability of turbine to control the power generated, additionally due to method of generation [rotational force by wind], system would need to be stable, and due to area of supports being way insufficient by itself it would require foundations [notes as concrete]; Of course structural integrity of entire turbine would require much more hardware to keep static than in case of light solar panels [this in turn allows solar panels to be only held by pile-driver inserted structural anchors, additionally surface area of support is much higher, and it looks like it is the support that provides weight for solar panels to stay in place during heavy wind];
Of course take in mind that due to MANY more mechanical components in wind turbines, including clutch to disconnect rotating turbine in the event of too fast rotations for electronic systems and rotational generator to keep up with withou damage, you need more maintenance than set-and-forget method of solar panels; Heck, I'd be willing to say solar panels in game require way TOO MUCH maintenance than in reality, as normally [in terrestial conditions] you'd only want to clean them up once in a while, and replace them once one gets damaged by external issue or lives to the end of its lifetime; Note - by external issue - I mean large hail for example [when we talk about earth bound panels]; Maintenance of panels in game could also be done by replacement of transparent metal plates to allow for reduced vulnerability of panels to martian dust;
As far as power production is concerned - solar power is extremely reliable, much more than that of wind turbines, if we have power accumulators to allow for periods of low production and high production balance due to weather conditions; I'd assume you would do such research as solar irradiance of surface when you mount manned mission to Mars, and if you don't - Id expect it to be done by rovers and drones during first years of mission; Preferably - continously for duration of colony existence, with preliminary assessment done before colonists get to planet surface.
In contrast - while wind turbines have higher energy potential they are also much more vulnerable to weather varaiance, this makes them much less reliable method of power production, and would require even longer and more detailed preliminary reaserch before deployment; As such I am not surprised it is solar power that is prefered by mechanics of this game over wind power;
TL; DR
Mechanically and technologically it is solar powers that are much easier to construct in any area and require relatively much lower amount of both electronic and mechanical components. Their edge comes from potential energy production, while solar power has edge in reliability.
P.S. take in mind we're talking here about difference of single rotation/martian day, with predetermined slow speed VS high speed variable rotation dependent on random variable [wind can be considered random for our purposes here].
Also - take in mind that current application of wind/pv in game favors extremely the wind one, once you can manufacture necessary mechanical components for turbines, due to them [unlike in real life] they are extremely reliable, working 100% of the time, with 100% of their potential power production, with bonuses flat improving by height of terrain, no penalties for turbine congestion [which is a thing in real life], no possibility of accidential turbine crash into nearby objects, including other turbines, and bonus during sand storms, where in reality it would at very least turn almost all turbines off due to way too high speed;
In essence - while they do require refined materials their base material cost is lower than that of solar panels, and due to their efficiency I'm adamant they do not need further buffs, while some are already considering them OP due to aforementioned reasons]
P.S.2. If you want to claim that mechanical components of turbines can be made using only metal, then use of mechanically simple process of creating silicon wafers should not be an issue whatsoever, and that with assembly [again - more complex on the side of wind turbines] are most complex elements of assembly of such PV panels;
NOTE: PV = Photovoltaics - method of production of energy from direct conversion of sunlight irradiance to electric energy [DC], in this case by utilizing photovoltaic effect using semiconductors; It is in contrast to CSP method [Concentrated Solar Power] which utilizes mirrors to heat up fluid [mostly - water] and generate power indirectly via steam turbine.
