Contact
Arise Saga is built and maintained by one person. Email reaches me directly.
Especially worth writing about
- A number that looks wrong. Tell me what you entered and what you expected. Tax rules and energy policy change often and I would rather hear about an error than keep publishing it.
- An assumption you disagree with. Every tool names its assumptions on a methodology page. If you think one is wrong, a link to a source beats an argument - I will change the model rather than defend it.
- A tool that should exist. These all began as a question I could not get a straight answer to.
What I cannot help with
- Recommending an installer, a lender or a broker. I have no relationships with any and take no commission, which is rather the point.
- Reviewing your specific contract or advising on your tax position. I am not a licensed adviser - see the disclaimer.
- Link exchanges, guest posts and paid placements. The answer is no.
What happens to your email
It arrives in an ordinary mailbox and stays there. It is not added to a list, not used to send you anything you did not ask for, and not passed to anybody else. There is no newsletter to accidentally subscribe to. If you would like the correspondence deleted, say so and it will be.
Response time
This is not a staffed support desk. I usually reply within a few days, and reports of an incorrect number get looked at first - a wrong figure on a page about somebody's money is the only kind of problem here that can actually cost them something.
How to report a wrong number usefully
The most useful report says which tool you used, exactly what you entered, and what the page told you. That is nearly always enough to reproduce the problem directly. Screenshots help less than the raw inputs, because the inputs let me run it myself.
It is worth separating two different kinds of wrong. A calculation error means the arithmetic does not follow from the stated method, and that is simply a bug to be fixed. An assumption error means the arithmetic is fine but the model is built on something that is not true any more - an interest rate that has moved, a tax credit that has expired, a subsidy that has been withdrawn. The second kind matters more, because it can be quietly wrong for months while every number still adds up perfectly.
For assumption errors, a link to a primary source is worth more than an argument. Point me at the agency, the tariff or the statute and I will change the model rather than defend it, and record the date it was checked so the next reader can see how current it is.
Arise Saga is operated by Sastihari S. Last updated 2026-09-06.