ООН Конвекция об изменении климата (UNFCCC):

The biomass is the non-fossil fraction of an industrial or municipalwaste.”

Организация экономического сотрудничества и развития (OECD):

Biomass is defined as any plant matter used directly as fuel or converted into other forms before combustion."

Директива возобновляемой энергии ЕС

"The biodegradable fraction of products, wastes, and residues from biological origin from agriculture (including vegetable and animal substances), forestry, and related industries including fisheries and aquaculture, as well as the biodegradable fraction of industrial and municipal waste"

CEN/TS 14588

The term biomass is defined as material of biological origin excluding material embedded in geological formations and transformed to fossil. Biofuels means fuels produced directly or indirectly from biomass and bioenergy denotes energy form biofuels

"Твердые биотоплива производятся из биомассы" - это проистое определение имеет более глубокое содержание, как с первого взгляда.

Бензин и дизельное топливо можно приобрести во всем мире, единое качество определяется стандартами EN 2287 и EN 5908, которые определяют химический состав и физические характеристики. Топлива которые не соответствуют стандартам не можно продавать. Итог этого, что производители автомашин не дают гарантию на случай, если использовали не стандартное топливо. Если топливо не имеет соответственную калорийность, то это приводит к серьезным экономическим последствиям, т.к. призводит к чрезмерному потреблению. Из-за этого никто не использует топливо не соответствующее стандарту.

Главный стандарт твердых биотоплив находится в EN14961. В этих документах находятся описания био-топлив для промышленных и не промышленных пользователей.

Краткий обзор стандарта:

Источник EN 14961-1

EN 14961 - 1 Solid biofuels. Part 1: General requirements.
This European Standard determines the fuel quality classes and specifications for solid biofuels. According to the mandate given for the standardisation work, the scope of the CEN/TC 335 only includes solid biofuels originating from the following sources:
a) products from agriculture and forestry;
b) vegetable waste from agriculture and forestry;
c) vegetable waste from the food processing industry;
d) wood waste, with the exception of wood waste which can contain halogenated organic compounds or heavy metals as a result of treatment with wood preservatives or coating, and which includes in particular such wood waste originated from construction and demolition waste;
e) fibrous vegetable waste from virgin pulp production and from production of paper from pulp, if it is co-incinerated at the place of production and heat generated is recovered;
f) cork waste.

EN 14961 - 2 Solid biofuels. Part 2: Wood pellets for non-industrial use.
This European standard determines the fuel quality classes and specifications of wood pellets for non-industrial use. This European standard covers only wood pellets produced from the following raw materials: Forest, plantation and other virgin wood; By-products and residues from wood processing industry; Used wood.

EN 14961 - 3 Solid biofuels. Part 3: Wood briquettes for non-industrial use.
This European standard determines the fuel quality classes and specifications of wood briquettes for non-industrial use. This European standard covers only wood briquettes produced from the following raw materials: Forest, plantation and other virgin wood; By-products and residues from wood processing industry; Used wood.

EN 14961 - 4 Solid biofuels. Part 4: Wood chips for non-industrial use.
This European standard determines the fuel quality classes and specifications for non-industrial wood chips. This European standard covers only wood chip produced from the following raw materials: Forest, plantation and other virgin wood; By-products and residues from wood processing industry; Used wood.

EN 14961 - 5 Solid biofuels. Part 5: Firewood for non-industrial use.
This European standard determines the fuel quality classes and specifications for firewood for non-industrial use. This European standard covers only firewood produced from the following raw material: Whole trees without roots; Chemically untreated wood residues; Stem wood; Logging residues (thick branches, tops, etc.).

EN 14961 - 6 Solid biofuels. Part 6: Non woody pellets for non-industrial use.
This European Standard determines the fuel quality classes and specifications of non woody pellets for non-industrial use. This European Standard covers only non-woody pellets produced from herbaceous biomass, fruit biomass and their blends and mixtures. Herbaceous biomass is from plants that have a non-woody stem and which die back at the end of the growing season. It includes grains or seeds crops from food processing industry and their by-products such as cereals. Blends are intentionally mixed biofuels, whereas mixtures are unintentionally mixed biofuels.