If you cannot access Boyle’s book immediately, consider these open-access renewable energy textbooks available as free PDFs without copyright violations:
| Title | Author / Editor | Free Access Link | |-------|----------------|------------------| | Renewable Energy and Climate Change | Volker Quaschning | Open access via TU Berlin | | Introduction to Renewable Energy | Nelson & Starcher | CRC Press (instructor copies available) | | Solar Energy Engineering | Soteris Kalogirou | E-book via National Technical University of Athens | | Wind Energy Explained | Manwell, McGowan, Rogers | Wiley (sample chapters free) | If you cannot access Boyle’s book immediately, consider
Additionally, MIT OpenCourseWare and NREL (National Renewable Energy Laboratory) provide free lecture slides and data. Rather than attempting to find a legally questionable
Rather than attempting to find a legally questionable PDF on defunct file-hosting sites, the following methods are recommended: including the table of contents
Search for "Renewable Energy Godfrey Boyle" on archive.org. While full download may be restricted due to copyright, you can often borrow the scanned 2nd edition for 1 hour or 14 days. Not ideal, but legal and free.
Google Books often shows 20–30% of the 3rd edition, including the table of contents, index, and select pages. Useful for verifying citations.
Beyond legality, downloading copyrighted PDFs from file-sharing sites like (the old) Rapidshare or current torrent sites exposes you to: