ALPHA ENGINEERINGPower & Energy · Since 1979
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ALPHA ENGINEERINGPower & Energy · Since 1979
The financial case is usually built on generation numbers from the company selling you the system, using standard site assumptions. That isn't dishonest, but it also isn't your site. What those numbers can't account for is your protection scheme, your voltage conditions, and what happens to both once generation starts pushing the other way. We model how the system behaves on your network, flag what has to change, and tell you whether the projections hold up in the field.
The interconnection gets approved and the array puts out what the model said it would.Usually the installer, or whoever in finance is looking at the payback. Both work fine right up until the site turns out to be less standard than the proposal assumed it was.
The installer projects performance using his own equipment and a set of standard site assumptions, and he is also the one selling you the system.
Reasonable enough if the site is straightforward and he has done facilities like yours before.Finance approves on the payback math on its own, with nobody checking the engineering assumptions sitting underneath it.
Fine as long as in-house engineers are checking the technical assumptions underneath the math.An engineer with nothing to sell you checks interconnection, protection and performance against your actual site before the capital is committed.
Worth the cost when the investment is big enough that finding out late would really hurt.Four things to confirm before construction begins.
We review what you send and follow up about what the interconnection is actually going to have to account for.
Request an Engineering Review →You speak directly with an engineer about your situation and the next step.