Contact
TheGreenWatt is a one-person site, so contacting me reaches the same person who wrote the article and built the calculator. I read every message and reply to most within a few business days. The fastest way to reach me is by email or the form at the bottom of this page.
For data corrections, methodology questions, partnership inquiries, or anything else that doesn't fit a category below.
info@thegreenwatt.comOperator
Marko Visic — sole proprietor.
Ljubljana, Slovenia (EU).
Site is written in English and targets U.S. solar audiences. Replies are sent from a UTC+1 / UTC+2 time zone.
What you can write to me about
Five kinds of inquiries come in regularly. The more specific you can be — page URL, the exact number you're looking at, the inputs you used in a calculator — the faster I can get you a useful answer.
Data corrections
If a number, chart, or fact on a calculator or article looks wrong, send the page URL and the specific value you believe is incorrect. I will check it against the source (NREL, EIA, DOE, EPA, manufacturer datasheet, etc.) and respond with what I find. If the number is wrong, the article is corrected and the “Last updated” date is bumped within 30 days.
Methodology questions
If you want to understand the formula, derate factor, or assumption behind a calculator output, just ask. Every calculator on this site uses NREL PVWatts v8 or another openly-documented model. I can show you the equation and walk you through how each input maps to the result.
Calculator bugs
If a calculator returns an obviously wrong answer (zero, negative when it shouldn’t be, NaN, a value that doesn’t change when an input changes), tell me which calculator and the inputs you used. I usually fix these within a few days because they affect every reader.
Source / citation questions
If you’re writing a paper, article, or report and want to cite TheGreenWatt, contact me and I’ll help you point at the underlying primary source (NREL paper, EIA dataset, IEC standard) rather than my page. Original data is always better than a secondary source.
Partnership and business inquiries
I do not accept paid content, sponsored articles, or affiliate placements. I am open to non-commercial collaborations with universities, research groups, and government agencies working on solar energy education. Use the same email with “Business” in the subject.
Response time
I aim to reply within 1–3 business days. Data corrections and calculator bugs are prioritized over general inquiries because they affect every reader of that page. Routine questions may take up to a week during heavy site-update weeks.
Corrections policy
Confirmed errors are fixed within 30 daysand the article's "Last updated" date is changed. Material corrections — wrong formula, incorrect source, changed methodology — are flagged with a public correction note inside the article. Read the full policy on the About page.
Send a message
Use this form for the same things you'd email me about. It lands in the same inbox. Your name, email, topic, and message are sent via the Web3Forms relay and used only to read and reply to your message — see the privacy policy for full details.
Tips for the fastest reply
- Include the page URLif your question is about a specific article or calculator. I receive messages without context and they're harder to triage.
- Quote the number or sentence you're asking about, exactly as it appears. This eliminates ambiguity.
- Share the calculator inputs you used if reporting a bug. "The output was zero with 5 kW and 5 PSH" tells me much more than "the calculator is broken."
- No need for pleasantries — I prefer terse, specific messages over polite filler. Saves both our time.
What I won't reply to
- Cold outreach selling SEO services, link insertions, or guest posts
- Requests to add affiliate links or paid placements to existing articles
- Generic "please collaborate" emails with no specifics
- Anything that obviously didn't look at the site before sending — if your "personalized" message could apply to any solar site, it's going to spam
Filtering these out is the only way a one-person site can keep up with real reader questions. Sorry for the bluntness.