ALEC calls for penalties on 'freerider' homeowners in assault on clean energy • Documents reveal conservative group's anti-green agenda • Strategy to charge people who install their own solar panels • Environmentalists accuse Alec of protecting utility firms' profits • ALEC facing funding crisis after exodus of big donors Suzanne Goldenberg in Washington and Ed Pilkington in New York theguardian.com, Wednesday 4 December 2013