SAN FRANCISCO--(BUSINESS WIRE)--The mid-year 2015 outlook for thermal, renewable and oil and gas projects is stable, according to a new Fitch Ratings report. Most thermal projects have fixed-price tolling agreements that mitigate market and fuel price volatility. Projects exposed to operational or market price volatility greater than those modeled in Fitch's rating cases could be subject to downward rating pressure. Renewable energy projects benefit from fixed-price revenue contracts to avoid p