its a noble effort, but you are posting to an environment where everyone here knows that wind+solar+batteries is cheaper than gas or coal, because the wind and the sun are free, and they have no fuel costs.
True, but this is location dependent (and also time dependent). Solar, and solar plus batteries, is an excellent technology for many applications in many locations for exactly those reasons, but as the fraction of solar and wind generation increases, the technology is going to be implemented into progressively less-favorable locations. The hope, of course, is that the technology will keep improving, and right now that actually seems to be the case. But, most likely, the solution will have to be a mix of energy technologies.
They also know that the only people who are skeptical about this are climate deniers.
Most of the "skepticism" we hear is completely one-sided skepticism: people who profess skepticism about one side that they are opposed to from some ideological bias, but completely credulous about believing any claims that attack that side.
These deniers keep talking about something called Net Present Value and claiming that is the correct way to evaluate and compare costs of generating systems.
A good technique if you doing economic analysis, but has a lot of problems in that it doesn't really deal with tragedy of the commons (your own net present value is always increased if you use the free resources of the commons, regardless of whether everybody using the resources makes problems), and it fails if you can't quantify the economic cost of actions in the present causing problems in the future.
Net Present Value is a concept you will find in all kinds of Corporate Finance textbooks, well, do I need to say more? Its hetero-normative, racist, patriarchal and neo-colonial, and probably Islamophobic and transphobic with it and denies indigenous wisdom.
WTF??? This is very confused. I don't think I've heard any of those adjectives applied to renewable energy systems; this seems to be just a buzz-word jumble.
Its on the wrong side of history, like coal, gas and nukes. Of course it pretends that wind+solar+batteries is actually a very expensive technology. Well it would, wouldn't it?
Solar turns out to be a low cost technology, due almost entirely to a significant research and development effort in the 1980s and 1990s, funded primarily the US Department of Energy. Batteries, separately, have dropped orders of magnitude in cost, but due to a different driver: cell phones and laptops initially, and electric vehicles today. So, yes, the purported "skeptics" saying solar+batteries "is actually a very expensive technology" need to update their knowledge base.