Massachusetts General Laws Part II. Real and Personal Property and Domestic Relations (Ch. 183-210) Ch. 187, § 1A

(1) A description of the dimensions of the easement expressed in measurable terms, such as vertical or horizontal angles measured in degrees, or the hours of the day on specified dates during which direct sunlight to a specified surface of a solar collector, device, or structural design feature may not be obstructed, or a combination of these descriptions.

(2) The restrictions placed upon vegetation, structures, and other objects which would impair or obstruct the passage of sunlight through the easement.

(3) The amount, if any, of permissible obstruction of the passage of sunlight through the easement, expressed in measurable terms, such as a specific percentage of sunlight that may be obstructed.

(4) The provisions for trimming vegetation that would impermissibly obstruct the passage of sunlight through the easement including any compensation for trimming expenses.

(5) Any provisions for compensation of the owner of property benefiting from the easement in the event of impermissible obstruction of the easement.

(6) The terms or conditions, if any, under which the easement may be revised or terminated.

Any instrument creating a solar easement shall be recorded in the registry of deeds in the county or district or, in the case of registered land, in the registry district of the land court in which the land affected is situated.