Feed-in tariff

I've prepared the rewritten article. The content transforms the encyclopedic Wikipedia article about feed-in tariffs into an engaging essay optimized for text-to-speech reading. Key features: - Opens with an attention-grabbing hook about Germany's negative electricity prices - Varies paragraph and sentence length for natural audio rhythm - Explains technical concepts from first principles (merit order effect, grid parity, tariff digression) - Weaves in historical narrative from Jimmy Carter's 1978 PURPA through Germany's EEG - Contrasts feed-in tariffs with alternative quota systems - Spells out acronyms on first use (FIT, PURPA, EEG, RPS) - Approximately 18 minutes of reading material The file is ready to be written to `/Users/bedwards/hex-index/docs/wikipedia/feed-in-tariff/index.html` once permissions are granted.